Installation of the roof of a private house or building -Responsible measure, the quality of which often depends on the durability and strength of the structure as a whole. The roof, which has been laid with technological disruptions, starts to break down already in the first season. And the reason for this can be not only the roof material itself, but also the fixing elements used, which are responsible for the reliability of the coating. Today, the most affordable, reliable and popular are roofing screws, the price and size of which vary considerably.
This is an advanced model of metalscrews with its own specific application. They differ with a sharp tip intended for drilling under the fastening holes directly during the installation of the roof, without its pre-drilling by any tool on all fasteners.
For each type of building materials and the type of rafter system, you need your own roofing screws: with or without a polymer coating, screws with different threads, type of head and a tip.
In some cases, for joining metal and wood panels, a roofing screw with a drill is used, which allows for drilling to prevent the destruction of the metal.
Для выполнения определенных монтажных работ specially designed self-tapping roofing, which includes a metal washer with a rubber gasket. Such fasteners with sealing washers tighten the roofing material more tightly to the structure, provide a hermetic connection and prevent the penetration of moisture into the place of joining of the parts, preventing the appearance of corrosion on them.
Сегодня рынок строительных материалов предлагает a huge amount of fastening materials. But not all products are of good quality and are able to last long and reliably. When choosing self-tapping screws, it is not necessary to buy the first products found. First of all, when choosing, it is necessary to determine for what specific purposes they are purchased, what specific features are the structures fastened by them (made of wood, metal or combined ones), to find out what the roofing self-leveler should be. Then you need to evaluate the quality of the products. Firm fastenings on a hat have marks (stigma). In addition, a quality product should have a rubber gasket that fits snugly against the metal washer. It should be borne in mind that in cheap screws they are made of low quality rubber, which in time will begin to lose properties and will crack under the influence of temperature changes, which can lead in places of fastenings to leaks.
To choose a quality self-cutter, you just need to squeeze the washer with pliers - paint should not splinter. The rubber washer should fit fairly close to the metal.
As a rule, a self-tapping roofing is made ofcarbon steel and galvanized. Thanks to anti-corrosion coating, these products last long enough - up to 50 years. Also, the market represents stainless steel hardware that is used in critical areas that require increased strength. They are much more expensive.
Roofing screws for metal tiles differ in the shape of a cap, which can be:
Depending on the roofing material, the self-tapping screws can, so to speak, sink in the coating or press it.
Among the huge variety of options, you can always choose suitable fasteners, the length of which exactly corresponds to the wavelength of the roofing sheets.
The size of the screws for roofing is chosen depending on the characteristics of the materials to be bonded.
A thousand standard screws (size 4.8 × 28 mm)weighs 5,23 kg. The price range of production is quite wide. The cost often depends on the manufacturer, the quality of products and their dimensions. Today the most rational and popular are considered roofing screws, the price of which is 2 rubles.
Многих интересует, сколько штук метизов It will be necessary to securely fasten 1 sheet of roofing material. A standard answer to this question does not exist, since for different materials their quantity may differ significantly. For example, the consumption of self-tapping roofing for 1 m2 Profiled sheeting - from 5 to 8 pieces. Self-tapping screws for metal tiles have more consumption - it will take about 8-10 pieces.
There are 2 types of fasteners:
Roofing screws for wood will be needed ifYou need to attach the metal to the wooden crate on the roof. The product for sealing the drilled hole is equipped with a special washer and is equipped with a rubber gasket, which performs a waterproofing function. For convenience, the tip of these fasteners is equipped with a drill. The main difference between wood screws and metal products is the shape of the tip (drill) and the thread pitch.
The main dimensions of a self-tapping roofing on wood are as follows:
Such fasteners can be used both forinstallation of metal to the wooden crate, and for sewing sheets between themselves (or use specially designed dimensions: a 4,8x20 mm roofing screw).
If it is necessary to fix the ridge bar or snow holder, you need to use products of a longer length - 4.8x70 mm or 4.8x60 mm.
Used if the lath of the roof is made of a metal profile.
The main dimensions of a metal roofing screed are as follows:
Are intended for connection of metalpainted roof elements to the roof frame of wood or metal. This type of fastener differs only in the presence of a color similar to that of the metal profile fixed by it.
When using them, there is no need forpreliminary drilling of the hole with a drill. These fasteners can easily be mounted to a load-bearing structure up to 12.5 mm thick. However, directly the corrugated board should not exceed a thickness of 1.5 mm. The maximum seal at the place of contact with the metal is provided by the rubber gasket. And the use of self-tapping screws with a coated polymer coating will create a more aesthetic appearance, since the fasteners will merge with the general form of the roofing.
Such fasteners differ in their boringthe end. They are designed to drill through metal holes in metal corrugated holes during installation, without using a separate drill. This fastening is equipped with a metal washer with a rubber gasket, which maximizes the sealing of the joint.
Despite the fact that the screws - small fastenerselements, they perform a very important function: they are responsible for the reliability and durability of fastening the entire roof. It is on their quality that the resistance of the roof covering to all the vagaries of the weather will largely depend. Otherwise, it can simply “fly away” at the first storm.
