Roofing: self-assembly technology

Building a house is a complex undertaking. But even experienced workers say that erecting the very "box" is sometimes easier and cheaper than installing the roof. This is due to both the laboriousness and the danger of this event, as well as the price of materials to cover the roof.

You always want to somehow cheapen the process, and in the case of a limited budget, savings in general can become the only possible solution, otherwise it will be very difficult to finish the construction. To help you save your money without sacrificing quality can the rebated roof.

What it is?

This is the name of technology, when metal, or even plastic, acts as a coating material for the roof . In this case, the individual sheets are secured between themselves by means of folds. The so-called twisting of the edges of the metal. There are different ways of doing this work, but at the present time, special electric folding machines are leading by the frequency of application. Their use allows you to maximize and simplify the process of laying the metal.

A little about the cost

By the way, how much does the roof cover cost? The price per square meter depends on its type: if you make a roof yourself (from roll or sheet iron), then you will pay only for the cost of the metal. In the case of buying a ready-made kit, the cost of such a roof will exceed 1700-2000 rubles per square meter.

General information about installation

The advantage of this type of roof is that it can be mounted on a crate, or on a solid foundation. Attention! The second option is more preferable, since in the first case you will have to calculate the rafter step as precisely as possible, because otherwise you risk getting the deflection of the sheets and divergence of the seams. This entails the rapid occurrence of corrosion and spoilage of the metal. In this case, the folding roof will not last long.

What are the mounting technologies?

We have already said that roofing in this case can be performed from solid sheets of metal, but this approach becomes less and less popular every year. In many respects this is due to the fact that it is necessary to observe the humidity and temperature regime of the attic space very precisely. If you do not make every effort to do this, then as a result, the internal surface of the iron will constantly form condensation. On the consequences you can guess yourself.

That is why the roll roof made of rolled metal becomes more and more widespread. The reason for this is the fact that the seams are very durable and of high quality, rarely even diverge under a large layer of snow.

Advantages of roll mounting

First, you can use not only galvanized steel, but also metal with the application of a polymer coating. This material has a great resistance to corrosion, and therefore able to serve more than a dozen years. In addition, the metal in the roll is flexible enough, which makes it possible to mount a double fold. As we said above, it has increased strength and tightness, practically does not allow water to pass through.

Even if the folding roof is steep, the roll can be rolled out neatly, rather than dragging iron sheets separately at it with a life risk. In addition, in this case, the roof can also be used to pick up the folding machine: it is many times easier to walk along the entire rolled roll than to tinker with individual sections of the material.

Instruments

If you carefully read the material, you yourself could come to the conclusion about the special importance of the tool that will be used to twist seam seams. There are two main types of clamping devices: mechanical and electrical.

Speaking of the first instrument, these are two special frames. The first of them twists the main fold, after which the second frame is covered with the next seam. We have already spoken about the electric machine. It is very convenient to use it, since it folds a single fold in just one pass, after which it can be started in the opposite direction to twist the second seam. Of course, that, provided the electric tool is used, the metal rebate roof takes much less time and effort.

The following devices are also required:

• Several hammers with a flat and rounded head, normal pliers.
• Shears for cutting metal.
• Drill, and quite powerful.
• Extension not less than 30 meters in length.
• Screwdriver or drill bit. However, we recommend the first option, since it is much easier.
• Rulers and roulettes.

The main stages of work

First, it is necessary to choose the appropriate type of the crate, then calculate the optimal step of the rafters. It can be made not only from beams or boards, but even from a metal profile or profile pipes. The surface of the battens should be as flat as possible, without potholes and depressions.

Important points of work

First, a vapor barrier membrane is laid on the rafter , which protects it from moisture ingress. The material used for these purposes is lighter and stronger, the better ventilation will be, and the less metal will be corroded. If you made a crate of wood, thoroughly soak it with antiseptic solution before work, as this will several times increase the service life of the roof.

Such a seam roof, the photo of which is in the article, easily can be more than half a century, without requiring special measures for caring for it.

The distance between the beams should not be more than 40 centimeters, as we already told about the consequences of the opposite approach. Installing the lath, mount the first sheet on the skate. If you do not use roll metal, then sheets of iron need to be fed to the roof one at a time, as otherwise you are seriously at risk - a lanyard is not ruptured.

Please note that the cover on the cornices is mounted in advance! After that, a support bar can be laid on the shovel. Do not forget about its installation also in the case of a hipped roof (stacked in place of the stack). To make the roof more beautiful and integral, first lay the first and last sheets, gently trim them if necessary. Remember that after cutting the edge of the sheets you need to wrap it up slightly.

In principle, the professional technology of mounting the rebated roof provides for their processing with a sealant, but you can do without it.

A bit about the strips

The overlapping of sheets should be not less than 40 millimeters, and it is necessarily established only on the bottom overhang. If you work with a ridge or a cornice, then each sheet must be fastened to both the upper and the lower bar on the crate. All the strips on the cornices and the end parts must seal the cavities under the roof. Mount them best with self-tapping screws with a rubber gasket. So they will not shake and will not fly away even after several years of service.

If you plan to use snow barriers or roof bridges, be sure to mount them on the joint of the sheets.

Remarks on the "body kit"

The edge and edges of the battens should be as straight as possible: before installation, be sure to check them with the help of a building level. The lowest board, which is called the cornice overhang, also should not have any curvature.

Cornices fasten immediately, without waiting for the beginning of the installation of folding sheets. Gutter holders, therefore, need to be attached even earlier. After that, crates are fixed on the crate, and their bases are neatly and tightly closed with a high-quality edging board.

By rafters, you can skip a strong and dense polyethylene film, which protects the tree from the action of penetrating moisture.

There is also a professional seam roof, the nodes of which are already fully prepared by the manufacturer. You just have to drag them to the crate, then fix it.

Basic laying advice

Before this process, the rays are again measured. If they are rectangular, then all diagonals should be of equal length. Note that the bottom seam should always be pointed in the direction from which you are mounting. Accordingly, some of the sheets may need to be deployed.

In all cases of longitudinal joints, the sheets are placed from the bottom up. If the ramp on your roof is more than six meters long, it must necessarily be made composite. The fact is that otherwise it will be very difficult for you to transport up to the top sheets of iron or a whole roll of material. As we already said, the material is overlapped with an overlap. Fronton should be fastened so that it closes the fold. Mount it should be on roofing screws, which have a durable rubber gasket.

A little bit about the ridge

If we talk about the skate, then its flat and shaped versions are allowed. In the case when the roof slope is more than 25 degrees, it is surely attached to reliable roofing screws. Attention! In those places that are closely adjacent to the wall, to other structures or pillars, it is necessary to lay a gasket of rubber or plastic film. For the same purpose, a plastic wall profile is used.

This is how the seam roof is made with our own hands.