The roof protects the house, so its waterproofing qualities must be very high. Moreover, it should be not only high-quality, but also aesthetic. One of the best options is a fold roof . It is created from metal sheets with edges (paintings), which are connected together in a special way.
The design of such a roof is light and durable. However, when creating a seam roof, it is important to adhere to the technology of its assembly. This will connect all the joints in a high-quality and tight manner. This design is lightweight. Therefore, its rafter system and crate does not require reinforcement.
History of development
The seam roof (photo below) used to be made of copper sheets. This material has good ductility. It was relatively easy for him to give the desired shape and thickness. The Germans practiced this technology initially.
Over time, sheets for the seam roof began to be made of ordinary or galvanized steel. At the same time, the cost of such a design has significantly decreased. Copper is still used for roofing or in the construction of houses with a large budget.
Currently, a special technology of fasteners is used. Sheets have special latches. In this case, the installer does not need special equipment. Therefore, even a novice builder can assemble the design. To protect against corrosion, they began to use special polymer coatings.
Benefits
The presented roof has a large list of advantages . The seam roof is lightweight. Due to the tightness of the joints, this design prevents the formation of leaks. The device of such a roof avoids the appearance of corrosion, since there are no through holes in it.
Another important advantage is the ease of installation of such a design. Even a novice builder is able to handle this work. This saves on the labor costs of professional installers.
Such a roof is combined with any building materials. It is equipped on roofs with slopes or hips. Moreover, the life of such a building reaches 20 years. Due to these advantages, such a design is in demand today in private construction.
Structural elements
The seam roof consists of several structural elements. They allow you to give the building the required performance. These include paintings, folds and kleimers. For a seam roof, it is important to properly assemble all of these elements.
The paintings are rectangular sheets. They are made of steel. The corners of such sheets are carved. The entire roof structure is laid out of them. So that the surface of the metal is not subjected to destruction and corrosion, it is coated with special polymer materials.
The seam is called the seam, which is obtained at the joints of the sheets. This structural element has high strength. Folded seams do not require the use of sealant. These ribs add rigidity.
Kleimers are nailed to the base of the roof. This element can be simple or movable. The first has a shape that is identical to the fold blank. The movable Kleimer provides an adequate response of roofing materials to thermal expansion and contraction.
Seam Design Types
Pictures are combined into a single coating canvas. The folds may be different. There are only 4 options for stitches. These include double, standing, recumbent and single folds.
The device of a fold roof can be different. If the ribs of the seams are longitudinal, they are closed with standing types of construction. Horizontal slopes are covered with recumbent folds. Double standing seams have the greatest hydroprotection.
Sometimes special latches are not provided in the design. In this case, the joints of the paintings are rolled up using special equipment. You can perform this procedure manually. This will also require a special tool.
disadvantages
It most clearly demonstrates what a modern folded roof looks like , a photo (a gable roof is shown in the image below). This design has many advantages. However, there are also disadvantages. They are associated with improper installation or the choice of cheap, low-quality material.
Acceptable cost are only designs with special latches. It will be extremely difficult to assemble other types of sheets yourself. Therefore, it is necessary to call a team of experienced roofers.
The metal has a high thermal conductivity. Therefore, the insulating layer must be thick. This is an additional cost. Also, the metal makes noise in rainy weather. To avoid this, use an even crate.
Such material requires the installation of special equipment that will protect the house from lightning, as well as a high-quality grounding system. Snow that has accumulated on the slopes can be an avalanche. Therefore, it is required to install special protective equipment.
Material selection
The seam roof on a hip roof or a gable structure looks very impressive. Its cost largely depends on the type of material of the paintings. Galvanized iron with a thickness of 0.6 mm can be purchased for 250 rubles / m². If the steel is coated with polyester spraying, the cost of the sheet will be 290 rubles / m². The price of the material depends on its durability.
If the construction has a large budget, you can purchase copper sheets for roofing. Their cost is about 2700 rubles / m². This is a very beautiful roof. It does not develop moss, bacteria and fungus.
A possible option is the creation of a roof made of zinc titanium. A sheet of such material will cost about 2000 rubles / m². This is one of the best options for roofing material. The alloy is not susceptible to corrosion, at the same time plastic and hard.
Preparation for installation
Installation of the fold roof is carried out in several stages. First you need to prepare the base. To do this, ensure that the slopes are flat. Their slopes should be the same and located at the same levels.
The rafter system should be made of well-dried wood. This will prevent shrinkage after installation. Be sure to set the counter beam.
Further, a vapor barrier is arranged from the inside of the rafters. Puffing between the sheets should be done at 20 cm. Jointing with the ridge, wind board and chimney should be given special attention. It must be done very carefully.
Mounting
The folded roof can be mounted both from ready-made paintings and from rolled steel. The material is brought to the workplace and its preparation is carried out. For this, bending equipment is used. In this case, additional roof elements should be created . These are skates, gutters, slatters.
Ready-made paintings are raised on the roof. They are installed on the crate with the help of clamps. Sheets are laid out along the eaves from the middle. In the same way, figured elements are installed that will adjoin the hips, dormer, chimney, etc.
Then, using the selected technology, the seams are bent, combining the paintings into one canvas. In our country, single folds are most often used. They suggest bending the metal once. However, double seams are stronger and more airtight. In this case, the bend is performed twice. Such seams are recommended to be performed in places where snow and water will accumulate, as well as throughout the roof, if the angle of its slope does not exceed 25º.
The fold height should be large if the roof slope is less than 25º. This will prevent water from seeping into the building when snow accumulates. Vertical outlets are covered with special insulating material.
Care and maintenance
The folded roof requires special care. It should be periodically inspected by the owners from the inside, especially in rainy weather. If a leak occurs over time, this place should be indicated. It’s best to mark with chalk. When the roof dries, you can begin to repair.
The place of leakage should be determined from the outside of the roof. It will be necessary to seal it precisely from the outside. After that, you can grease the junction with a thickly grated oil paint or miner putty.
If a hole has formed on the roof, its edges should be carefully leveled. Near the hole, it is necessary to smear the roof with oil paint. Latka is prepared from cotton fabric. It is laid on a hole so that wrinkles do not form. It will be fixed with paint. Patches should be smeared over the entire area. This will hide the indentation in the material.
Painting of the seam roof should be done at least once every 10 years. If corrosion begins to form on the sheets, they are cleaned with an iron brush. Next, the place of processing is covered with a broom and a layer of paint is applied. If the roof is assembled from black sheets of steel without galvanizing, painting is performed at least once every 3 years. This significantly extends the life of the structure, prevents the destruction of the material under the influence of rain or snow, temperature fluctuations.
Having considered what the rebate roof is, as well as the features of its installation, even a novice master will be able to assemble a similar structure on his own.