How to cover the roof with corrugated board. Transportation. Measurement works. Safety regulations. Tools for cutting and installation. Installation of sheets and roofing cake

Corrugated roofing has gained great popularity in the current building products market due to the durability of such a structure, along with a very attractive appearance, because the material has a wide range of colors and shades. That is why the question of how to cover the roof with corrugated board worries today many of those who are busy building private estates.

According to SNiP, the construction of a roof made of corrugated board involves the use of material with a wave height of more than 20 mm.The most popular is corrugated board with galvanized and polymer coating.

How to properly transport corrugated board

Before the laying of corrugated board on the roof can be done - a video about which you can find on our website, you should give some recommendations for transporting the corrugated board to the installation site:

• Profiled sheets, as a rule, are immersed on a solid, flat surface with dimensions exceeding the dimensions of a pack of sheets.
• During transportation, they provide protection of building materials from displacements and mechanical influences.
• Sheets are transported at a speed not exceeding 80 km/h.
• During transportation, they try to avoid sudden braking and acceleration.

If we cover the roof with corrugated board ourselves, then after the delivery of the material to the destination, it is also necessary to properly load and unload the profiled sheets:

• Both loading and unloading of sheets is carried out using lifting equipment equipped with soft slings. If the length of the packs of sheets exceeds 5 meters, traverses are used.
• When unloading by hand, a sufficient number of workers must be involved in the work: as a rule, in the amount of 1 person for every 1.5-2 meters of sheet length, but not less than 2 people.
• Sheets of corrugated board are lifted and moved carefully, keeping them in a vertical position and trying to avoid strong kinks.
• Throwing sheets, as well as dragging them with a drag, is strictly prohibited.

Before you close the roof with corrugated board, it must be properly lifted onto it:

• Sheets are lifted onto the roof with the help of lags installed from the ground to the edge of the roof.
• Sheets of corrugated board are lifted one at a time.
• It is not recommended to climb in windy weather, since in this case, due to the parachute effect, there is a high probability of missing the sheet, damaging it, and also injuring yourself.

Measurement work

Before you cover the roof with corrugated board yourself, you will need to carefully measure and fit everything.

When installing rafters, it is recommended to perform control measurements of the roof slopes, because deviations from the project are possible during construction.

In addition, before how to lay the most professional flooring on the roof, it is necessary to check the roof slopes for squareness by measuring the diagonals of the slopes (the lengths of the diagonals should differ by no more than 20 mm).

Then, the flatness of the slopes is checked using a cord and a level: the maximum deviation for every 5 m should be no more than 5 mm. Large deviations are fraught with a possible inconsistency of the sheets.

The minimum recommended slope of a corrugated roof is 12 degrees.

Safety regulations for the installation of corrugated board

The technology of laying corrugated roofing on the roof involves the observance of a number of rules that will allow not only not to damage the sheets of material, but also to preserve the health of the installer.

During do-it-yourself installation of corrugated roofing on the roof you should move carefully along the profiled sheets, wearing soft shoes and stepping on the deflections of the waves at the locations of the crate.When laying roofing corrugated board, fastening is carried out by means of self-tapping screws, screwing them into wave deflections.

Places of cuts, chips, as well as damage to the protective shell on the sheets in order to avoid the formation of corrosion, should be carefully treated with special repair enamel.

The edges of the sheets are quite sharp, therefore, work with them must always be carried out with protective gloves.

Chips formed when screwing in self-tapping screws should be carefully brushed off the surface of the sheets with a brush, otherwise they can corrode and damage the coating.

If you ask about how to properly cover the roof with corrugated board, then we will answer you that the main thing is to carry out installation work in compliance with the general rules of labor protection and safety.

It is forbidden to use sheets of corrugated board in a protective film after its installation. It is removed during the installation process so that it does not stick to the polymer coating.

Dirt on the coating is cleaned with a soft brush and/or washed with a weakly concentrated soapy solution.

It is strictly forbidden to use grinders with an abrasive wheel (grinders), since they burn zinc, in addition to the polymer coating of the material, which can cause the onset of a violent corrosion process.

Tools for cutting and installing corrugated board

To qualitatively cover the roof with corrugated board, you will need the following set of tools:

• Perforated shears preferably with a set of replaceable blades for manual cutting of steel up to 0.6 mm thick.
• Lever shears for manual cutting of sheets up to 0.6 mm thick, regardless of direction.
• Perforated electric shears for high-performance cutting of steel sheet up to 1.2 in thickness.
• Drill and a set of drills.
• Wire cutters.
• Hammer.
• Screwdriver.
• Rivet pliers.
• Sealant applicator gun used to evenly spread the sealant layer when installing corrugated roofing.
• Staple gun and staples of the appropriate size for attaching the hydro- and vapor barrier.
• Knife for cutting thermal insulation boards.
• A template for making a crate, with which you can accurately mark the step of the crate.
• Roulette.
• Marker.
• Long rail.
• Cord.
• Video: we cover the roof with corrugated board.

Installation of corrugated board

Roofing from corrugated board is installed on a crate constructed from boards or steel girders.

The use of corrugated board is recommended when the length of the roof slope of the building is less than 12 meters.

The angle of inclination of the corrugated roof affects the amount of horizontal overlap as follows:

• tilt angle over 30 degrees - overlap 100-150 mm;
• tilt angle 15-30 degrees - overlap 150-200 degrees;
• the angle of inclination is less than 15 degrees - an overlap of 200 degrees or more.

On a flat roof, it is recommended to use mastic or sealing tape.

When installing corrugated board PK-57, PK-45 and PK-20, installation starts from the end of the roof.

How to properly cover the roof with corrugated board:

• Sheets of corrugated board are attached to the crate in the lower parts of the corrugation using self-tapping screws and a screwdriver. The consumption of screws for each square meter of corrugated board should be approximately 6 pieces / sq.m. During installation, galvanized self-tapping screws are used, equipped with rubber sealing washers, size 4.8 * 0.38.

  

• On the cornice and crest, self-tapping screws are screwed through every 1 deflection of the profile waves, and in the middle of the plates - into all the boards of the crate.
• Between themselves, the sheets are fastened with rivets or self-tapping screws up the waves with a pitch for a roofing profile of up to 0.5 meters.
• The last sheet of corrugated board at the end of the roof is laid either with a large overlap, or it is cut to the required size along the slab.
• You can use the same rules, even if your task is to repair the garage roof with corrugated board.
• The overlap of the end plate is performed by at least 50 mm. Attach the end plate to the plate with rivets or self-tapping screws. The plank should completely cover the first wave of the corrugated sheet. Here fasteners are produced in increments of approximately 300 mm.

• The eaves strip is reinforced before the installation of roofing sheets with an overlap of 100 mm. When fastening, self-tapping screws or nails are used, screwing (driving) them in increments of about 300 mm.
• Internal joints are made of smooth galvanized or laminated sheet. The part of the roof located under the joint is covered with a dense flooring. The gap between the corrugated roofing sheet and the internal joint is sealed with a seal. The joint is reinforced with nails on the crests of the sheet waves or with screws in deflections with a step of 300 mm. The end of the sheet at the junction on the side of the ridge is placed under the ridge bar and carefully compacted. A grooved plank can be mounted on the inner joint, reinforced without sealing with self-tapping screws or rivets.

• In the role of the ridge strap, choose the straps K1, K2 and K3. Profile seals are used to seal ridge battens on hipped roofs. Lay planks with an overlap of 100 mm and fix them with self-tapping screws or screws with a step of 300 mm.

We hope that now you will have much less questions about how to arrange the roof of your house, or how to cover the garage roof with corrugated board yourself.

Protection device against heat loss through the roof: installation of a roofing pie under corrugated board

Over 25% of heat loss in a house comes from the roof. Therefore, if we cover the roof with corrugated board with our own hands, then its insulation should be one of the main priorities.

The technology for arranging a profiled roof involves installing a layer of thermal insulation, which, together with waterproofing, forms a roofing pie under the corrugated board, which performs a protective function.

In this case, it is necessary to select the desired thickness of the heat-insulating layer, as well as to ensure the protection of such insulation from moisture.

Thus, moistening of thermal insulation by only 5% reduces its thermal performance by more than twice, which will inevitably lead to freezing of the roof, the formation of ice on the roofing, rotting of the crate and rafters, the appearance of mold, damage to the finishing coatings of the interior.

Ways of getting moisture into thermal insulation:

• from the outside due to defects in the roofing device;
• through condensate formed from the inside of the roofing;
• through evaporation from the room.

Roof insulation from corrugated board is performed as follows:

• A waterproofing membrane is laid on the rafters.
• Thermal insulation is placed directly in the plane of the rafters under the waterproofing.
• Thermal insulation from the side of the room is protected by a vapor barrier membrane or a film with hermetic gluing of its joints.
• Attic living quarters are sheathed with boards, OSB and similar materials.
• To ensure effective mixing of air flows, a so-called “cold triangle” should be arranged under the roof ridge, which will make it possible to install under-roof ventilation outlets not on all rafter spans, but much less often.

In addition to knowing how to properly close the roof with corrugated board, you also need to know how to properly insulate it. You can do this by following our instructions exactly.

To reduce the formation of condensate on the lower - cold surface of the sheets, it is necessary to ensure the circulation of the air flow from the eaves to the ridge between the roofing and the waterproofing membrane.

Before installing the main waterproofing in the valleys, rolls of the waterproofing membrane are rolled along the entire length of the valley from top to bottom.

The main waterproofing is rolled out horizontally along the rafters (without sagging) from the eaves in the direction of the ridge with an overlap of 150 mm in such a way that the joints of the rolls fall on the rafters.

At the end of the installation of roof waterproofing from corrugated board, slabs or thermal insulation mats are installed between the rafters.

A gap between the waterproofing membrane and the thermal insulation is not required. When installing in several layers, the thermal insulation is laid with the overlapping of the boundaries of the previous plates.

Advice! In order to better, accurately and quickly cut the thermal insulation board, it is recommended to use a special knife for cutting thermal insulation.

From the inside, sheets of a vapor barrier film are attached to the rafters from the bottom up with the help of a construction stapler. The sheets are overlapped, and then hermetically fastened with a special connecting tape.

All cracks and passages through the vapor barrier film are carefully sealed.

The interior lining can now be installed.

Do not forget that if we cover the roof with corrugated board on our own, the video presented on the site will be able to give a visual representation of the installation process, thereby greatly facilitating the task.

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