When carrying out any construction work an important role is played by fasteners. But all kinds of screws, bolts, nails and self-tapping screws experience greater loads than even materials, so their quality should not be in doubt. Each type of work must correspond to the fixtures intended for them. let’s consider, how to choose screws.
A self-tapping screw is also called a self-tapping screw, for the use of which it is not required to perform preliminary drilling of the hole. Universal screws that can be used to work on plastic, wood and chipboard have gained especially wide popularity. Depending on the material used, self-tapping screws can have a different design. So, in metal screws, the thread is more frequent, and roofing screws have a rarer thread, so that the chips from the hole can be removed.
Roofing screws
When carrying out any construction work an important role is played by fasteners. But all kinds of screws, bolts, nails and self-tapping screws experience greater loads than even materials, so their quality should not be in doubt. Each type of work must correspond to the fixtures intended for them. let’s consider, how to choose screws.A self-tapping screw is also called a self-tapping screw, for the use of which it is not required to perform preliminary drilling of the hole. Universal screws that can be used to work on plastic, wood and chipboard have gained especially wide popularity. Depending on the material used, self-tapping screws can have a different design. So, in metal screws, the thread is more frequent, and roofing screws have a rarer thread, so that the chips from the hole can be removed.
Roofing screws
Roofing self-tapping screws are used during construction or repair work. Their fastening to metal or wooden surfaces allows the use of roofing materials with a thickness of up to 1 mm without their preliminary drilling. Each type of building material has its own roofing self-tapping screw: galvanized self-tapping screw with a polymer coating and without it, screws with a different type of head, thread and tip. In some cases, the tip of the self-tapping screw has the shape of a drill. A self-tapping drill is used to connect metal and wood panels..
Sharpening in the form of a drill along with galvanizing eliminates the destruction of the metal when it is drilled, which makes it possible to increase the corrosion protection of the joined materials. Part of the legs and the head of the roofing self-tapping screw is covered with a special polymer paint, so the possibility of corrosion is excluded under its head.
To perform some installation work, self-tapping screws were specially designed, the complete set of which includes a washer and a rubber gasket pressed to it. Such roofing fasteners with sealing washers adhere better to the surface even when they are screwed at an angle, and besides, they compensate for material deformations caused by temperature extremes. Even with a strong screw tightening, overheating and cooling of the seal, it will not become brittle, will not crack, and will not lose its elasticity. Roofing self-tapping screws for metal and wood with a rubber gasket and galvanized coating will protect the mounting holes from corrosion on them.
Roofing screws for metal and wood
If you are interested in a question, how to choose a screw, First of all, decide on the material into which it will be screwed. For the manufacture of metal screws, high-carbon steel with oxidized coating is used. The tips of these fasteners can be different and take the form of a drill or just a point. Quite often, builders prefer to use self-tapping screws with a drill. These hardware find their application not only in repair and construction, but also in other types of work.
For the manufacture of wood screws, high-carbon steel with a phosphated coating is used. Universal screws are also used to connect wooden panels.
Roofing self-tapping screws for metal and drywall
For fixing corrugated board and metal tiles, self-tapping screws intended for them are used. Self-tapping screws for metal are equipped with special washers with a thick rubber gasket. Thanks to the catalogs of roofing materials, it is possible to choose its color, so the roof will look especially aesthetically pleasing.
To fix the sheets of drywall, self-tapping screws with a drill are used, since such a tip is especially convenient in use. The thread pitch can be frequent, or maybe rare: the determining factor when choosing a self-tapping screw is the surface to which the drywall will be fixed.
To fix plywood sheets to the metal surface, self-tapping screws with a press washer are used. These hardware have a pointed tip that is suitable for working with plywood and hardboard materials. Self-tapping screws with a drill are used to work on steel sheet..
Fastening a sandwich of panels using roofing screws
For fastening the sandwich panels, self-tapping screws with a specific design are used, which allows you to easily drill a metal surface up to 14 mm thick. These screws have not only the main, but also additional threads, which allows to increase the fastening strength.
The important step is, how to choose a screw, is the accounting of the material in which it will be screwed. In addition, it is important from the very beginning to determine the loads to which your hardware will be subjected. If you keep this in mind, you can create a solid and reliable design.
