If you want your roof to look beautiful and neat from all sides, and the rafters to be protected, it needs to be finished. This is why roof overhangs are hemmed. The house will be protected and will look like a completed structure. Let's take a closer look at what popular materials are and how to hem the roof eaves.
In this article
Why do they hem the cornices?
The rafter structure is completely assembled, strengthened, and only then the roof eaves are hemmed. But this is done before the sheathing frame is installed to finally cover the structure with the selected roofing material. Before you start filing your eaves, completely waterproof the roof and insulate the attic. Before you start covering your cornices, do not insulate the walls. Then you will not disturb the fine finish of their surface.
Before installation, inspect the rafter structure. If any parts stick out when they shouldn't, they need to be sawed off. For a pitched roof, you need to sew up the overhangs so that there is room for installation drainpipes with ventilation for roof pie. What material to choose for cladding? Purchase it at your discretion and in any suitable configuration.
Hemming of cornices
The body kits are sheathed according to the following schemes:
- When the roof has a slight slope or the house needs to be increased in height, they sheathe it directly along the rafters. Before this, you should already carry out work when the rafter legs are aligned and are in the same plane. Now install strips on the edges on both sides to hem the cornice. Stretch the marking thread from one to the other. Focusing on them, attach the remaining parts to decorate the body kit.
- For case 2, you need vertical and horizontal alignment of the rafter legs. Nail a board to the rafters below, and attach a beam to the wall (1 cm higher than the previously attached board). Thanks to this, moisture will drain normally. Is your overhang more than 450 mm? Additionally, install a board in the middle.
If you carry out the work yourself, you will need to create an overhang box. Your own box for different types the skins are made identical. The board is sewn onto the sheathing, moving along our pediment. Now measure the distance from it equal to the width of your overhangs. The boards are brought to their permanent place in parallel, aligned with the gable wall.
We sew overhangs with soffits
Soffits with the necessary details can be made from different materials and by different companies. That’s why the mounting methods are different. When you purchase the material, read the instructions for how the manufacturer recommends attaching it. Consider lining the roof eaves with vinyl soffits.
I install soffits most often horizontally. There are cases when they are attached at the feet of the rafters. To lay horizontally, you need lathing. They lay on it necessary materials. Let's consider the technology:
- A J-profile of the correct size is required. It needs to be placed across our overhang and marks made there.
- The profile of the required size can be cut using a grinder. You will do this quickly, and the cut area will come out smooth.
- Using self-tapping screws. Attach the profile to the wooden frame.
- Fasten the profiles like this over the entire area. Want to know how thick the soffit strip should be? Measure the distance between 2 of the profiles. These are the soffit strips you need to cut.
- To set the bar. It must first be brought to the overhang near the wall, and then into the eaves. Attach it to the wooden sheathing with self-tapping screws.
- When filing the roof eaves, do not use a J-bevel. The frontal area also needs to be covered with soffits.
So, the cornice is covered with soffits .
How to cover a cornice with clapboard or board?
Before covering, do not forget to soak the board or lining with an antiseptic, a mixture that prevents the material from igniting and is water-repellent. The material will last much longer how without such impregnations.
How long will the boards be needed? Suitable for overhang length. Attach one board from another at a distance of 1 cm. These gaps are needed for ventilation. If you choose lining for installation, then make tongue-and-groove connections. A step of 1.5 m is required and attach the ventilation grilles there.
Hemming with corrugated sheets
Let's consider the technology of how to optimally make firmware. Using corrugated sheets:
- Apply the block horizontally and focus on the level of the edge of the overhang. Now, in parallel, focusing on the edge of the rafter legs, nail 2 bars;
- It is necessary to cut the corrugated sheet into pieces of the required length. Don't forget to allow for thermal expansion and ventilation clearances. Fasten the material to the previously mounted bars with self-tapping screws.
- There will be gaps between the wall and the corrugated sheet. Cover them with strips for internal corners. When connecting, there will be similar gaps at the outer edges. They are covered with slats for external corners.
With roof eaves lining option — corrugated sheets, you did it.
Attention! When corrugated metal is used for filing, do not forget that this material rusts and lasts less than wood with impregnations.
Nuances when working with spotlights
Let's look at the features that arise when using this material:
- The soffit must be fixed through certain holes and placed at right angles;
- The gaps between the material are needed to expand in hot weather. When cold, the material contracts slightly;
- For these fasteners, this size is considered optimal: the head is 8 mm wide, the leg is 3 mm long. There is no need to screw them too tightly. Leave a gap of 1 mm;
- Let there be a distance of 40 cm between the fastenings. You can fasten the material more often;
- Cut the soffits. Using a circular saw with a blade. The teeth on it are in the opposite direction. You can use a knife, cutting metal, scissors. Use a knife to draw where you will bend as much as necessary and break off pieces of the required size;
- If you are going to store or transport spotlights, then put them in stacks of 10 to a maximum of 15 pieces. Lay the material on a flat surface ;
- Manufacturers claim that you can work with the material in winter, but craftsmen do not recommend doing construction work by laying this material when the frost outside is below 15 degrees.
You can hem the roof eaves with clapboards or boards or other materials, but experts recommend using soffits. The material is convenient to lay, cornices with them look aesthetically pleasing and last a long time. Do not forget about the nuances and adhere to the above technologies. Now you know how to hem the roof eaves yourself.
The overhang or eaves of the roof is the lower part of the roof, which usually protrudes from the walls by 40-80 cm.
Its main purpose is to protect the walls and foundation from rain and melt water. The design of the cornice is carried out at the final stage of construction, when the roof is installed and the finishing work on the external walls is completed.
It is recommended to hem not only the eaves overhangs, but also the ceilings of terraces and balconies, and porch canopies. A wide selection of materials allows you to choose cladding for any architectural style, taking into account the type of roofing.
Why is the cornice hemmed?
- After laying the roofing material, part of the rafters and other layers of the “roofing cake” are visible from the bottom of the ends. This does not look aesthetically pleasing - the lining of the overhangs improves the roof, covering all the internal parts, and gives a complete look to the entire structure.
- In addition to the decorative function, hemming the eaves protects the roofing system from damage due to strong winds.
- Another important task is solved - proper under-roof ventilation is ensured, thanks to which the appearance of condensation, mildew and mold is eliminated. Accordingly, the service life of the structure increases.
Types of roof overhangs - what to look for.
There are two types - cornice overhang, another name is horizontal, and pediment overhang. Let's look at how they differ and the features of filing each.
Cornice overhang.
Formed by the lower fragment pitched roof. Air masses pass through it into the attic. In the case of a heated attic, air enters the under-roof space from below the slope, passes upward and is discharged through a ridge or aerator, this is how all elements of the “roofing pie” are ventilated.
To properly organize air draft, the eaves overhang lining must be ventilated, not continuous, but with inlet openings. To do this, use one of the following methods:
- The simplest one is to create a gap between the panel and the wall. Based on the material used, the gap size should be: 1-1.5 cm for siding or wooden lining, 0.6-1.2 cm for corrugated sheets.
- Integrate aeration grilles - they are installed directly into the sheathing panel.
- When wooden boards are chosen as the finishing material, you can leave 0.5-1 cm gaps between them during installation.
- A more popular solution is to line the eaves overhang with perforated soffit.
When finishing a horizontal overhang, two important rules must be followed:
- All ventilation slots and gaps must be covered with mesh or grilles. This will prevent debris and leaves, small birds and insects from getting under the roof.
- The volume of the slots should not be less than 1/500 of the entire ventilated area. In addition, each type of roofing material has its own hole diameter. For example, ceramics “breathe”; ventilation gaps are needed with a smaller diameter than for flexible tiles.
What happens if you neglect the ventilation of the under-roof space and tightly close the eaves overhang?
Excess moisture contributes to the formation of condensation, wetting and destruction of insulation and rafters, and the formation of mold.
— Corrosion forms on metal tiles over time, and natural tiles will burst in the cold due to excess moisture.
- overheating of the premises in hot weather and icing of the roofing in cold weather is possible; such a roof will very quickly fail and major repairs will have to be carried out.
Gable overhang.
Formed by the inclined side part of the roof slope. Here the task is the opposite - you need to protect the sheathing and insulation from getting wet and blown out, and therefore prevent the penetration of wind and rain under the roof. In this case, the filing is performed in a continuous hermetically sealed manner.
How to design the edge (end) of an overhang?
Both types of overhang have open elements at the ends. From the side of the eaves overhang - this is the end rafter system, at the pediment - the ends of the sheathing. They are closed with special components, which can often be purchased along with the tiles.
This is done not only to give a beautiful appearance, but also to preserve the roofing materials from adverse weather factors.
Sometimes the part for finishing the edge is made of wood, pre-treated with an antiseptic and painted - but this is not the best option.
Additional components are made of metal and are more durable, as they are coated with protective anti-corrosion polymer compounds.
When shaping the edge of the eaves overhang, first the rafters are cut in one line vertically at the same distance from the wall. The ends of the rafters are connected with a strapping front board.
A metal cornice strip (drip tray) is mounted on it. A drainage system is installed along the eaves overhang.
On the side of the gable overhang, the sheathing is cut along one line parallel to the wall. A metal end strip is installed along the gables, covering the edges of the sheathing.
It is also called a wind strip; in addition, it protects the roof structure from strong winds and prevents debris and insects from being blown through the ends.
The main methods of filing roof overhangs:
Along the rafters.
The simplest technology and is mainly used for roofs with a slope of no more than 30 degrees. and a cornice extension of 40-50 cm. A sheathing of timber is built to the rafters. Sheathing panels can be mounted parallel to the wall, perpendicular to the rafters or along the end.
Horizontal filing.
Suitable for roofs with a steep slope. A box is built from the bars, which is attached to the rafters and the wall. In this case, the block on the rafters must be placed 1 cm lower than the block on the wall. This way, moisture that gets on the overhang does not linger on it.
Then the bars are nailed from the corners of the house to the corners of the roof. If the overhang protrudes more than 45 cm, another longitudinal beam is additionally installed. Next, bars are added perpendicular to the wall to strengthen the longitudinal bars. This method allows you to economically hem the overhang; installation does not take much time.
Gable overhang trim.
Regardless of the technology used to hem the eaves overhang, the pediment is always framed using sheathing. The bars are attached to it, to which the cladding strips are then fixed.
Selecting material for hemming.
Which material to use primarily depends on the overall style of the house, taking into account the decoration of the walls and the type of tiles. An important factor is the price and, of course, the personal tastes of the homeowner. It is worth taking into account the practicality and durability of the material.
Wooden plank.
The tree requires special care . Before installation, it is treated with antiseptic and fire-fighting compounds, painted and varnished. From time to time you will have to repeat these operations, otherwise insects will appear in it, it will begin to become damp and deformed, appearance at the same time noticeably deteriorate.
Coniferous species are chosen for lining the cornice. The board can be planed or edged, the permissible width is 2-25 cm, thickness 1.7-2.2 cm. When mounting the boards parallel to the wall, they are attached in increments of 1 m, perpendicularly - on both sides of the board, with a wide overhang also in the center . For ventilation, leave gaps between the boards of 1-1.5 cm.
Wooden lining.
The material has already been processed, unlike the board. But, like a board, before installation it is advisable to keep it in the air under a canopy for 1 month, otherwise the wood may be too wet or dry, which will subsequently lead to deformation. Installed in a similar way. It is possible to install ready-made ventilation grilles, which are located at a distance of 1.5 m from each other. The lining costs twice as much as the board.
OSB and plywood.
The boards must be moisture resistant. Installation is quick, since the dimensions and rigidity of the material make it possible to install large sheets at once. For installation, a box of timber is erected, to which the slabs are screwed. Ventilation is carried out by inserting grilles. This type of filing not durable and not aesthetically pleasing, definitely needs painting.
Sheet metal.
Rarely used, as it has a number of disadvantages: heavy weight, a special tool for cutting is required, and anti-corrosion treatment of steel sheets along the cut edge is mandatory. Mostly galvanized steel with a polymer coating with a thickness of 0.6 mm is used. The length of the product can reach 6 m. Rarely do they take copper or aluminum sheets. For ventilation, grilles or perforations are used.
PVC panels are installed perpendicular to the walls, screwed in several places depending on the width of the overhang. For ease of installation, various additional elements can be purchased along with the siding. To finish the edges, “U” shaped strips are placed, the junctions of the panels are fixed with corners, and there are ventilation grilles. PVC siding is not recommended for installation along the overhang; it does not have sufficient rigidity and can sag. Siding is produced mainly in light shades, its cost is low. If you choose good quality material, it will last for quite a long time.
It stands out for its ease of installation and durability. Profiled sheet C8, C10 or NS 20mm is used. When designing the cornice, you should take into account the thermal expansion of the corrugated sheet and leave a gap of 0.6-1.2 cm. Fastening is carried out in increments of 1 m. Ventilation is carried out through specially designed grilles.
Soffit is a special siding for lining an overhang. Soffits are made of vinyl or metal. They have a varied texture and a large color palette. For example, wood-look metal soffits are very popular - they accurately copy the wood texture of noble wood species, such as cedar, oak, and maple.
But in comparison with natural wood, soffit does not require maintenance, does not require processing or painting, does not dry out or swell, is not afraid of moisture and temperature changes, and costs several times less. Soffits are suitable for all types of tiles and can be easily matched to any architectural style.
The kit includes all the necessary components, profiles and strips, which greatly simplify and speed up installation. Soffit panels can be of different types: single, double, triple, perforated or solid.
You can complete the overhang with soffit yourself; the installation procedure is very simple: the planks are cut along the width of the overhang and secured with grooves perpendicular to the walls.
Soffit is undoubtedly the most reliable and quick way cornice hems and is very popular among owners of private cottages.
Let's look at installation using a vinyl soffit as an example. All elements are screwed to a wooden frame:
- The J-profile is placed across the overhang and measured.
- Cut the J-profile with a grinder.
- Attach the J-profile to the sheathing with self-tapping screws.
- When all the profiles are fixed, measure the distance between them and cut the soffit strip to the required size.
- The soffit is installed. To do this, the soffit strip is inserted first into the wall overhang, and then into the eaves. Fastened with self-tapping screws.
- The front part of the cornice is sewn up with J-chamfers or a strip.
You can buy soffit for lining roof overhangs at a competitive price in Yekaterinburg at “Your Roof”. Vinyl and metal soffits from trusted manufacturers are always available. We provide warranty cards and quality certificates for all products. The service life of the soffit is from 20 to 50 years.
Single-color spotlights are available in light, bright and dark shades, as well as with imitation natural wood. You can always order professional installation of cornice soffits.
Reliable lining of the roof overhang protects the walls of the house from the vicissitudes of the weather. In addition, high-quality ventilation of the under-roof space can be arranged in the filing to ensure high-quality and durable functioning of the roofing pie. Beautifully designed overhangs are a decoration of the house.
How to hem roof overhangs with your own hands
The roof overhang is the extension of the rafter system to a certain distance beyond the walls of the building. In some cases, to lengthen this element, fillies are used - boards that are a continuation of the rafter legs.
The overhang has a purely practical purpose - protecting walls from external factors - rain, hail and snow.
But, in addition to its functional purpose, an overhang can also perform purely aesthetic purposes, being a decoration of the building.
The overhang is lined from below with various materials, forming a structure that encircles the house on all sides. Various materials are used for this:
- Galvanized metal sheet.
- Metal sheet painted or with a plastic protective coating.
- The board is a tongue and groove lining.
- Vinyl siding.
- Soffits - special products for forming an overhang and ensuring the operation of the system natural ventilation.
There are two types of overhangs:
Photo gallery: filing of roof overhangs
Roof overhangs, covered with clapboard, well complement the appearance of a house made of timber or rounded logs. Hemming with edged boards is used as a simple and inexpensive way to finish overhangs. Siding lasts longer than wood, so roof overhangs will be reliably protected for decades. Metal soffits not only add the house has a finished look, but also serves for ventilation of the under-roof space
Finishing the edges of overhangs
The fundamental document for the design of safe buildings and structures is the federal law dated November 30, 2009 “Technical regulations on the safety of buildings and structures.” On its basis, various documents on the creation of overhangs have been developed, including SNiP II-26–76 “Roofs”. The requirements of the document stipulate the rules for constructing overhangs of various structures and the materials used for this.
This set of rules and requirements is constantly being refined and changed due to the appearance of various roofing materials on the market.
Optimal overhang size
As already mentioned, the purpose of overhangs is to protect walls. Therefore, the wider it is, the better it performs its function. But there are also limiting parameters - a wide overhang is subject to increased wind loads, which can weaken it over time, leading to the formation of leaks in the roof.
Therefore, the width of this element is rarely more than one meter. For buildings with one or two floors, the standards provide for an overhang of 60 centimeters, and for a normal drainage system it must be at least 40 centimeters.
Roof overhangs can be made in the same style with other architectural elements of the building, for example, with a canopy over the entrance Basic methods of filing overhangs
These building design details are arranged different ways:
A house with unfinished hangings does not look aesthetically pleasing; it sometimes looks like it is unfinished.
How to hem the overhang from below
Various materials are used to form overhangs:
- Boards made of coniferous wood - spruce, pine, larch. Such materials are less susceptible to warping. The board used is planed on four sides with a thickness of 20–23 millimeters. Such material is characterized by drying out, and the width of the product can decrease by 2–8%, which leads to the formation of gaps between them. It is not recommended to use material wider than 12 centimeters; it is often subject to warping. To avoid the formation of cracks, the planed board can be overlapped with an overlap of about 10 millimeters.
- Lining. Using a tongue and groove board for hemming would be a more practical solution. In this case, there is no need to use strips. The board is padded both in length and width, using additional sheathing. In the second case, you can use the scraps remaining after finishing other surfaces.
When using lining, there is no need to fill the strips - PVC siding. This material is usually used for awnings on gables, but it is also used for lining overhangs. The material is valuable because it does not require constant care. Siding plates are installed at right angles to the walls. Fastening is carried out to the wooden planks of the sheathing with self-tapping screws through the holes provided for this purpose. Each successive plank is fixed to the previous part with a locking fastening. The PVC siding kit includes additional elements that can be used to hide the end cuts.
Overhangs covered with siding last a long time and do not require regular maintenance - Profiled sheet. Profiled sheets are often used for hemming overhangs. For this purpose, small-combed varieties with a wave height of about 8–10 millimeters are used. They can be placed lengthwise along the wall or in small cuts perpendicularly. This profile is produced by bending on profile bending mills. A more successful solution from a design point of view is the use of aluminum profiled sheet obtained by rolling. Such a profile can have an anodized coating of the most different colors, from a range of which you can choose the desired shade. This type of rental is durable and does not require constant maintenance.
To sew overhangs, you can choose a profiled sheet of any desired shade - Smooth steel sheet. It is used with a protective coating of zinc or aluminum-silicon. The benefit of using it is the ability to give the sheet the desired shape flexible. Sheets with a protective coating in the form of paint or plastic are also used.
- Use OSB or plywood. This is a sheet material that is well suited for finishing overhangs. OSB is a product made from specially oriented wood chips. Produced by pressing using polymer binders. The process occurs at high temperature and high blood pressure. The result is an absolutely non-hygroscopic material of high strength. At the same time, the surface of the slabs has an original pattern, allowing it to be used for design purposes. Plywood made with polymer binders is also used for finishing overhangs. However, the outer layers of veneer are exposed to the weather and require additional protection after installation on eaves.
OSB has an original texture that can be used to implement interesting design solutions - Soffit is a specialized profiled steel sheet for lining overhangs. Soffits with a length of 0.5–8.0 meters can be made to order. In the standard version, their length is 2.4 or 3.0 meters. Please note that the multiplicity is 0.5 or 0.6 meters. In appearance, the soffit imitates timber installation. Double and triple parts are available. One or two soffit projections are equipped with a perforated grille, providing ventilation in the under-roof space. Thanks to the locking connections, the soffits are quickly and easily installed. Fastening to the sheathing is done with self-tapping screws. Color solutions are used within the RAL or RR ranges, which allows you to choose any tones that are in harmony with the color of the roof and walls.
Soffits are usually matched to the base color of the roofing system.
Soffits for lining overhangs are made from various materials. The mentioned metal perforated products are used only for curtain rods. They are not used for gables.
Metal soffits can be made, in addition to steel, from copper and rolled aluminum.
Soffits made of plastic are also popular. They are noticeably cheaper and very easy to install. The material for their manufacture is polyvinyl chloride or silicone. The main dimensions are 3 meters long, divided into three parts by width, which is 305 millimeters.
Do-it-yourself cornice filing
This structural element of the building can be performed in several ways:
This method is most often used on roofs with a slight slope. The work is performed in the following order:
The specified sequence is used when installing boards parallel to the wall. If the hemming is done perpendicularly, using short pieces, you must first secure the support strips. They are installed on the rafters at the junction with the walls and at the ends of the legs. The hemming strips are fastened with self-tapping screws.
After leveling is completed, roofing work can continue, and the filing can be completed after installing the topcoat.
Before making hems along the rafters, their ends must be aligned Video: how to trim rafters correctly
Framing the overhang on the frame
This method of closing the under-roof space is used for steep roof slopes. To do this, the following operations are performed:
Video: metal filing of overhangs along the frame
Installation of spotlights
With this method of filing overhangs and cornices, additional elements are used, supplied along with the soffits. They are used to form a mount into which the lining parts are inserted one by one. Different manufacturers have different soffit mounting systems. Before starting work, you should carefully read the instructions.
Required element The lining of the eaves overhangs are ventilation holes in them. They are needed to ventilate the under-roof space. If it is not there, condensation from the finishing coating will damage the roofing pie until it is completely destroyed.
Diagram of the arrangement of supporting elements for lining with soffits For overhangs of any design, there is a single ratio of the ventilation surface. It should not be less than 1:50000, that is, the total area of the ventilation holes in the lining must correspond to the given ratio to the roof area.
It should be noted that we cannot talk about any insulation of overhangs, since a ventilation space is formed along them, and insulation requires tightness.
Video: installation of spotlights
Hemming the roof overhangs is one of the final operations during the construction of a house. This procedure should not be taken lightly, because not only the appearance of the structure, but also its proper functioning largely depends on it. Unreasonable savings on this element can subsequently result in significantly larger unforeseen costs. I wish you success!
Roofing is a very important stage in construction. Success in it is guaranteed by a pleasant and neat appearance of the building, be it a home, office, or utility room. A well-lined roof can protect the walls of the house from bad weather, and it can also have an excellent ventilation system that will ensure a long life for the entire roof. After reading this article, you will learn how to properly hem and what materials should be chosen for this.
Hemming the overhangs makes the picture roofing works fully completed Source 2gis.ru
Why are overhangs needed?
A roof overhang is the overhang of the roof that extends from the bottom of the roof. The recommended overhang width is 40 - 50 centimeters. Hemming of roof overhangs is a mandatory operation during the construction process. However, if you do not plan such a process, serious troubles may arise. The worst thing happens when a strong wind undermines the entire roof, passing through unlined overhangs. And the correct lining of the roof overhangs hides all the insides of the roofing pie and gives the building a finished look.
Important! Before carrying out lining work, you should complete the installation of the roof and also insulate the walls.
Types of overhangs
Structurally, overhangs are divided into only two main types: cornice and pediment.
Cornice overhangs
The lower horizontal part of the roof slopes is called the eaves overhang. It plays a key role in roof ventilation. The fact is that air enters through it, which either passes through the attic, as with attic-type roofs, or through the roofing pie, as with attic-type roofs, and then leaves through the ridge. Therefore, you cannot nail down the overhang tightly, because in this case air will not pass through.
A well-made sheathing should provide sufficient ventilation of the under-roof space Source interistroy.ru
There are several ways to ventilate your roof. Firstly, you can leave a gap between the wall and the lining material. It should not be too big, about one and a half centimeters. Secondly, the use of sheet materials when filing overhangs makes it possible to use ready-made ventilation grilles. Thirdly, if the overhang is hemmed with boards, we can simply make gaps between them. But in the case when the roof, for example, is based on bitumen, it is worth increasing the area of the ventilation holes compared to, for example, clay tiles, since the first does not allow air to pass through at all. It is also worth covering all openings with nets to prevent contamination of the roof or attic.
The side part of the roof overhang is the gable overhang. The list of its functions does not include ventilation, but its main task is to reliably protect the entire roofing pie. Otherwise, the systematic ingress of moisture will nullify all the efforts of your insulation, which is located in roofing pie, and the room will become noticeably colder. When it comes to front overhangs, the most important goal is airtightness.
The gable overhang looks more voluminous Source pallazzo.su
How to trim an overhang edge
Each type of overhang will necessarily have uncovered elements, such as the end parts of the rafters, as well as the ends of the sheathing. You will definitely need to decorate them beautifully, protecting them from bad weather and all external factors. The choice of materials for lining roof overhangs directly depends on what you used as roofing.
Before starting work, you should cut off all protruding rafters and sheathing elements at the same distance from the wall. After this, you must cover them with a strapping board, to which the front board is then attached. It is necessary to cover all wooden elements with protective compounds and it is better to paint if it is made of wood. It is also necessary to provide attachment points for gutters. On the front overhang, you need to nail the end board to the cut parts of the sheathing, and only then use roofing materials to finish it.
Options for filing overhangs
There are many options for filing overhangs, but the most common are the following:
Eaves lining along rafters. This method is the easiest of all possible, but it requires that all rafters lie strictly at the same level and in the same plane. It is suitable for roofs with a slope of no more than 30 degrees and an overhang of up to 50 centimeters. The sheathing material is attached to the sheathing, which in turn rests on the roof frame. It will be better and more convenient if the hemming strips are stuffed perpendicular to the rafters.
Horizontal filing. Very fast and economical in terms of material, hemming the roof. In order to carry out this option, you must first assemble a box of two boards, and only then attach it to the rafters. The board covering the end should end slightly lower than the vertical one, so that water falling on it can easily roll down. If the width of the overhang is about 50 centimeters, then another longitudinal board will be needed in its middle. This is a ready-made frame for installing roofing materials. This method is well suited for roofs with a large slope.
An important point is that the frame is always assembled from beams and boards, and lining materials are already attached to them.
Sheathing materials are attached to the roof frame Source amwd.ca
How to choose materials
If you are planning such an operation as lining the roof with boards, then coniferous wood would be better for these purposes. The board must be thoroughly dried, otherwise it will warp later. It is imperative to treat it with paint and varnish coatings to protect it from mold and moisture. This material can be hemmed parallel and perpendicular to the wall.
A good option is wooden lining. Its advantages over the board are that it is already processed. However, for such purposes it must be water-resistant, and it must also be dried and processed. When hemming with this material, you can use ready-made grilles for ventilation.
Good quality lining is universal material, which is also used when filing roof overhangs Source stroyportal.ru
Polyvinyl chloride siding- another material option. Only waterproof material should be used for hemming. All accessories can be purchased in special stores. You should not attach such material along the wall, because over time it can bend greatly.
Very easy to use and available material- This corrugated sheet. It is distinguished by its lightness, strength and durability, as well as its affordable price compared to other materials. If the choice fell on this option, then when filing it is worth leaving ventilation gaps a little more than a centimeter.
Lining the roof with corrugated sheets looks very nice Source krovelmag.kz
You can also use sheets of waterproof plywood or OSB, as well as galvanized or polymer-coated steel, aluminum or copper.
Covering roof overhangs using soffits
Lining the roof using soffits is one of the most rational methods.
The soffits themselves are strips that are produced specifically for lining roof overhangs and are a very convenient and fairly affordable means. They can be made from any material from PVC to metal. Various colors and styles allow you to choose soffits for any home. Typically, this hemming material is sold complete with everything necessary, including fittings and fasteners.
Soffits are usually sold as panels, which can have one, two or three layers. Soffits can also be solid or perforated. This method of filing is very simple and relevant, since installing soffits on the roof eaves does not require special skills and abilities, as well as spending a lot of time.
Soffits are panels specially designed for lining overhangs Source krovelmag.kz
One of the most popular ways lining of roof overhangs with soffits - horizontal lining. When using this method, a sheathing is made and attached to the roof overhang. Then a profile cut to size is attached to the sheathing. Such a profile is usually cut with a grinder and attached to the sheathing with self-tapping screws. There should be two strips - one at the wall, and the other at the edge of the overhang.
Careful measurements are the basis of any construction work Source interistroy.ru
Then the plate is inserted first into a profile located near the wall, and then at the end of the overhang. The gable part of the overhang can also be covered with a soffit.
Video description
This video will tell you more about installing spotlights:
Common mistakes when working with spotlights
If the work is carried out by professionals, then the filing should be neat and beautiful.
Special attention must be paid fastening reliability soffit panels, you should never skimp on fastening materials and fittings, otherwise a strong wind can undermine the entire structure.
Be sure to finish before filing decoration of external walls.
Another important note: for filing overhangs, you should definitely get stainless fittings so that later rust does not spoil the appearance of the building.
Eaves cladding made in the same style as the cottage façade Source interistroy.ru
On our website you can find contacts of construction companies that offer turnkey roof repair services. You can communicate directly with representatives by visiting the “Low-Rise Country” exhibition of houses.
Conclusion
The process of lining the roof is an important stage in the construction of any cottage, directly affecting its appearance. This kind of work can be entrusted to professionals, because they will perfectly finish the overhangs and give your home a finished look. I am sure that after reading this article, you learned a lot of new and interesting information and learned how to hem roof overhangs, and were also able to get acquainted with the process of lining a roof with soffits. Now you can choose and order the correct, economical and neat hemming of roof overhangs.
After installing the roof, it is necessary to carry out work on its cladding. The binder will perform three functions at once:
- it will give the house a finished look;
- will provide roof ventilation;
- will protect the facade.
Today we will talk abouthow to hem a roof eavesand what should be used for this.
A cornice refers to rafters that protrude beyond the boundaries of the building's façade. This cornice is:
- frontal;
- lateral.
Let's look at each of them.
The main function of the front overhang is to protect the facade. Essentially, these are the side edges of the roof slopes; therefore, a hip roof, which has 4 slopes, does not have such edges.
If we are talking aboutgable roof(and in most houses this is exactly the case), then the supporting beams installed on the rafters are released outside. You can also often see an overhang of sheathing boards laid under the roof on top of a vapor barrier. The main cornice board is attached to them, which is subsequently sheathed (more on this later).
Side overhang
Every sloping type roof has such an overhang. It is created by rafters extending beyond the walls of the building. The length of the projection depends on the blind area and the height of the building, but in most cases it ranges from 60 to 70 cm.
Despite the norms, sometimes narrower cornices are found. This can be fixed in two ways:
- reliably protect the wall from the wind, since in slanting rain it will get very wet;
- installing fillies to increase the length of the rafters is a more labor-intensive procedure that few people want to perform (after all, you will have to open the roof that has already been made).
That's why the required length of the cornice should be considered at the design stage.
Along the entire cornice, the rafters are fastened with boards - in the future they need to be covered with facing material.
As already stated, cornices protect the roof and façade of the building from precipitation. But at the same time, they should not become an obstacle to the natural ventilation of the space under the roof. And this applies not only to attics, but also to ordinary “cold” roofs.
The heated air, rising from below, must freely overcome the eaves, pass between the roof and the vapor barrier and exit through the ridge. That is why When installing the overhang, do not use foam or sealant, otherwise condensation will occur and, as a result, the insulation will get wet.
Note! Only the side cornices should be ventilated, while the front ones must be sealed tightly.
About the choice of materials for the overhang
Today there are quite a lot of materials for cornices, each with its own pros and cons. Nevertheless, they all very effectively provide ventilation and protect the roof from moisture. When choosing one or another of the materials, pay attention not only to its appearance, but also to its service life.
This material is galvanized steel coated with polymer spraying. Corrugated sheeting is resistant to heavy loads, temperature changes, and has suitable rigidity. Between the layer of corrugated sheeting and the surface of the wall, you need to leave a gap that would be equal to the height of the waves of the material.
A more popular material used in the construction of roof eaves, which is nothing more than siding, but with ventilation holes. Another difference between the material is the use of specialultraviolet stabilizers, protecting the cornice from the harmful effects of sunlight.
Soffits are divided into several types depending on the material used in manufacturing.
- Characteristic feature copper soffits is durability and presentability, but at the same time high cost. Such soffits are very durable and non-flammable.
- They cost less, which is why they are more popular when filing overhangs. They are light in weight and have a pleasant appearance, yet they effectively protect the roof from moisture. The installation procedure is quite simple. The result is a seamless fabric that provides good ventilation. Today there are several types of vinyl soffits -solid three stripes, perforated and perforated three stripes.
- Galvanized soffitsgood because they do not require constant self-care. They are characterized by strength, fire and moisture resistance. The only drawback can be considered to be the large weight, which is why the installation procedure can be quite labor-intensive.
- They are lightweight and elastic; if necessary, they can be easily repaired. In addition, the paint that is applied to the aluminum surface is very durable, which is why the color does not fade even with prolonged exposure to sunlight. The only disadvantage of aluminum soffits is the undiversified palette, consisting only ofbrown or white.
No matter what new materials appear, and even today, overhangs made ofreal wood. In this case, you need to select the material very carefully, because the cornice will be located on the street and, therefore, be exposed to aggressive influences environment. There is no need to save money and buy thinner lining - try to keep the thickness of the material at least 2 centimeters. The humidity of the lining should be at an average level.
Note! A lining that is too wet is absolutely not suitable, because it will definitely “lead”.
The boards need to be nailed two centimeters from the wall to ensure good ventilation.
You can hem the overhang using one of two available methods:
- along the rafters;
- on a wooden box.
Overhang on raftersSuitable only for roofs with a slight slope. This method is complicated in that as a result the edges of the rafters must form a flat plane. This is not always possible, so the only solution may be small planks, length from the edge of the canopy to the wall, attached to the rafters. To nail them evenly, you first need to pull the twine and align it. For fastening useiron corners or screws.
Cornice on a wooden boxPerfect for roofs with a significant slope. To construct this box, you need to take a 40 mm thick board and secure it between the rafters and the wall surface. If one edge of the board is attached to the rafter leg, then additional installation of a second board, vertical, will be required.
The box is finished, now you can start attaching the sheathing.
Note! The sheathing should be secured with screws, but not nails - this will provide the necessary rigidity.
The installation procedure consists of the following steps.
First stage . It is necessary to equip the soffits with a pair of special strips in the form of the Latin letters F and L. The first needs to be secured on the side of the cornice, the second - on a special strip attached to the wall. All fastenings are made using self-tapping screws. It is advisable to pre-mark everything so that the planks lie evenly.
Second phase . Then you need to measure the cornice and subtract 6 millimeters from the resulting figure - this will allow you to create a gap to compensate for thermal expansion. Next, you need to cut the soffits into strips of the required length.
Third stage . The soffits need to be slightly bent and inserted into the installed profiles. Self-tapping screws are also used to secure them.
What you need to know when installing soffits
- It is not advisable to carry out workat temperatures below 15°C,let the manufacturers talk about the possibility of installation even in winter.
- Soffits need to be installed only at an angle of 90°C.
- Soffits should be stored only on a flat surface, in stacks of 15-20 pieces.
- You should always leave the gap mentioned above.
- To cut soffits, you need to use a “circular saw” with reverse teeth (you can also use special metal scissors).
- The length of the screws must be at least 3 millimeters.
- The step between the fasteners should be a maximum of 40 centimeters.
Corrugated sheeting technology
First stage . First, a block should be nailed to the wall in a horizontal position, strictly at the level of the overhang. In parallel, a second block is attached at the same level, this time along the rafters.
Second phase . Then you need to cut strips of corrugated board (not forgetting about the same thermal expansion) and attach them with self-tapping screws to the bars.
Third stage . The joints are decorated with strips of the outer and inner corners.
Actually, the installation of corrugated board is completed.
Clapboard hemming technology
It is advisable to carry out this procedure from below, using a stepladder or scaffolding.
Note! The cornice can be hemmed only after completion of external insulation, installation of moisture insulation and cladding.
First you need to check if all the rafters are the same length and if they are installed parallel to the wall. Then you need to attach the wind boards to them and only then proceed with installation.
First stage . Screw the board to the wall in a vertical position. The bottom edge of the board should be flush with the rafters.
Second phase . Secure the next board between the previous one and the rafters, aligning along the bottom edge. The result will be a base - and you need to install the sheathing on it.
Third stage . The frame is covered with boards. Traditionally, a slight gap should be left between them and the surface. The boards should be smooth, approximately 20 millimeters thick.
Note! To ensure ventilation, it is advisable to install special grilles every one and a half meters.
Although it is worth noting: few builders do this, relying on the fact that wood has the ability to “breathe”.
Conclusion
As a result, I would like to note that upon completion of installation, the installed material must be processed antiseptic– it will be additional protection for him. If you follow all the selection and installation instructions given here, the cornice will last a long time and look great.
Video - Lining the roof with soffit
