The quality of fasteners plays an important role in the creation of plasterboard structures. The right choice of materials will not only make the structure solid, but also reduce costs. Particular attention should be paid to screws for drywall. They are always needed, and in large quantities. Self-tapping screws have the different length, a form, diameter, a step of a carving, a cap, and also are made of various materials. With all this you need to understand before buying the first drywall screws and profiles.
Content:
Plasterboards for drywall differ in appearance and size. Their standard diameter is:
The following length is possible:
It is very easy to get lost in this variety, but everything is not as difficult as it seems. Standardly, self-tapping screws for a drywall profile have a diameter of 3.5 mm, and their length is 25 or 35 mm, but sometimes bugs are 9.5 mm long (for fastening profiles). The classic version is 3.5 * 25 mm . If the sheets fit into two layers, then you need screws with a length of 35 mm.
After screwing the screw, it should look out from the back side for 1 cm. Based on this and the specific situation in which the repair is carried out, you can guess what screws are needed for the profile and drywall.
What else is different between the screws? They may have different threads, the pitch of which may be small and large. There are also differences in the material used. This may be high carbon steel (in the composition of steel 0.6-2% carbon), stainless steel, brass or alloy steel. The last option is the most desirable. It is also important to cover hardware.
It may be missing. Self-tapping screws for fixing the profile for drywall can have a pointed or drill-shaped tip. The shape of the head is often a secret or semi-secret, but sometimes a semi-circular, hexagonal and carob shape is required. When working with GCR in the absolute majority of cases, a secret head is needed, or as it is also called a conical head.
The design of the slot should be cruciform shape. There is also a flat, Z-shaped, star-shaped and combined slot, but this is not necessary to work with GCR.
Choosing hardware in the store, you will immediately find that they are divided into two large groups: for wood and for metal. Outwardly, they are very easily distinguished by the thread pitch . If you take two products in hand, it will be seen that the one that has fewer threads turns to work with wood. There are no other distinctive differences between them.
Drywall screws for metal have a smaller thread pitch than analogue for wood
What product to choose for repair? Screws for wood and metal are also labeled as “for drywall”, so both options are suitable. The choice is obvious if self-tapping screws are required for attaching drywall to the tree. However, more often you have to work with a metal profile, and screws for metal are screwed into it much easier, but they are also more expensive.
Also pay attention to the screws with a drill for metal 9.5 mm long. Such bugs are usually used when you need to bond two profiles together. The presence of the drill allows much easier and faster to pass through the thickened profiles.
Screws for gypsum are good because they do not need to pre-drill a hole. They themselves drill drywall and profile, cutting them into threads. During such drilling, the screw tightens all the parts through which it passes.
Answering the question of how many screws on a drywall sheet is required when working with a wall or ceiling, you can immediately buy the required number of fasteners. Thanks to the correct calculations, there will not be many unnecessary self-tapping screws and you won't have to walk behind them twice.
To say what the exact consumption of screws per 1m2 drywall is impossible. It's all about the distance between the fasteners. Also important is the metal frame to which the gypsum is attached. After all, if it has a lot of jumpers, then the screws will take more. On average, drywall fastened with screws with a pitch of 15-30 cm for the wall and ceiling. On the ceiling, the pitch is the same if lighter ceiling plasterboard is used.
So all the same, how many screws do you need on a sheet of drywall on the wall and ceiling? On average, about 120 pieces, if we are talking about a standard sheet of 1.2x2.5 meters. Hence we conclude that 40 screws are needed for 1 square meter. This is the average figure from the consumption of a step of 20 cm and the presence of jumpers with a step of 40 cm.
Everything is very individual and depends on the type of construction, so that the consumption of screws on a drywall sheet can vary. In any case, you can buy the required quantity, because they are sold both for 1000 pieces and 500 and 250 and 50 each. It is not necessary to take the packaged fasteners in the box, because you can buy it individually and even by weight.
What screws fasten drywall to the profile? Qualitative. We already know what characteristics the screws should have, but how to understand which quality fasteners? The first thing to do is to visually inspect the hardware. The fastener must be completely identical. You should not enjoy a small price, seeing that the screws have a different thickness or uneven shape.
The correct ratio of the screw, regardless of its length
Ideal cross-shaped holes for the slot - another sign of product quality. Moreover, the hole under the slot should be exactly in the center of the screw. Before you choose screws for drywall, you need to still examine their color. We have already mentioned that it should be black. However, it should be a uniform black color, which indicates the high quality of the phosphation or oxidation carried out. Here are some screws needed for drywall.
Marking on self-tapping screws is another indicator of quality. But, as a rule, these are products of famous brands, and therefore its value will be higher.
Buying fasteners not in prepackaged packaging, you need to check the declared characteristics. There are cases (often in small towns) when the size of the self-tapping screws sold do not match the declared characteristics. It is ideal to bring a caliper to the market to ensure proper dimensions. Sometimes it happens that the self-tapping screws 3.5x35 mm after manual measurement for some reason turn out to be 3.3x32 mm. In hardware stores, the risk of stumbling upon such a “setup” tends to zero.
To answer the question, what kind of self-tapping screws can be used to fasten drywall to the profile as follows.
These are the main points that need to be considered when using standard GCR. Now there should be no questions about what screws to use for drywall.
Что бы оставить комментарий войдите
Комментарии (0)