What self-tapping screws to fix the 30 floorboard. Floorboard screws: features and benefits


When building your own house, it is not enough to pay attention to what materials are used for this - you also need to be very careful about the method of fastening these materials. As you know, any building material "requires" its own fasteners and the way it is used. The floorboard is no exception in this regard. Considering the loads that fall on its share, the choice of the method of fastening the floorboard simply cannot be an insignificant issue. Indeed, if the boards are not properly secured, they, after a short time, will begin to "show their discontent", loosening and changing their position, and the smooth and even plank floor will not just creak underfoot - it will literally disintegrate into separate components.

What fasteners are used to secure the floorboard?

Today, manufacturers produce special self-tapping screws for the floorboard, which ensure reliable fastening of the board to the base and guarantee a long service life of the flooring without any additional investment in its repair.

True, it is worth noting that such self-tapping screws are somewhat more expensive than conventional fasteners used in construction. But at the same time, they do their work very efficiently and as efficiently as possible. As a result, the entire floor covering will last much longer than if ordinary screws were used to fix the boards. Saving on self-tapping screws in this case is an almost guaranteed need to repair the floor in the very near future. And on the boards themselves, fasteners that are not specifically designed for them can have a very negative effect - for example, a crack can go from screwing such fasteners along the board.

Features of self-tapping screws for floorboards.

As a rule, self-tapping screws for a floorboard are produced in several standard sizes: 3.5x35, 3.5x40, 3.5x45 and 3.5x50 mm. The size of the self-tapping screw is selected depending on the thickness of the boards used during the installation of the floor covering. All self-tapping screws have a special protective coating that prevents corrosion on their surface.

And it is very easy to find out the special screws for fixing the floorboard - there is a cutter on their tip, which allows you to screw these screws into the board without preliminary drilling the holes. This allows for a more "dense" entry of the self-tapping screw itself, and hence a more solid fixation of the board on the base. In the same case, if you pre-drill a hole for a self-tapping screw on the base of the floor, spontaneous unscrewing of the self-tapping screw may occur, and it is not always possible to choose the correct diameter of the drill for the subsequent "landing" of the board on the self-tapping screw.

It is worth saying a few more words about the geometry of the milling cut on the self-tapping screw - the cutting angle is selected in such a way that the self-tapping screw easily enters the tree without splitting the board. And the whole form of a self-tapping screw is subordinated to this task.

Another feature of the self-tapping screw for fixing a wooden board is the absence of threads on its upper part - this allows the self-tapping screw to fasten the floorboard more tightly to the base.

  1. The distance between the individual screws when attaching a wooden board to the base should be between 25 and 30 cm.
  2. Some craftsmen recommend using special glue when laying floorboards on a horizontal base, which is used when laying parquet. This is a completely possible option if there is no additional waterproofing layer between the boards and the base - for example, a moisture-proof film. But at the same time, it is important to know that special glue can only be an additional way of fixing the board - self-tapping screws are still the main method. Without them, it is simply impossible to achieve a sufficiently reliable fastening.
  3. Perfectly joining the floorboards to each other, we must not forget that the flooring should not come close to the walls of the house along its entire perimeter - about 7-10 cm of free space should be left between the edge of the covering and the wall.
  4. It is also possible to completely "hide" the self-tapping screws used when installing a wooden floor. To do this, you need to "drown" the head of the screw into the board by a few millimeters, and the resulting hole "mask" with a piece of wood of a suitable size and shape, the species of which must match the species from which the boards are made. Some manufacturers of luxury building materials produce similar "plugs" that are included in the kit for the boards themselves.

Wood is perhaps the best type of material for flooring, which is "suitable" for environmental friendliness, aesthetics, and practicality for literally everyone. In addition, such a coating can be easily mounted (and dismantled) - in the process of fixing, special self-tapping screws are used for the floorboard or chipboard.

And in this article we will consider such "floor" screws, touching on the flooring assembly diagram, where these hardware products appear.

Self-tapping screws for fastening the floorboard - features

The self-tapping screw for the floorboard "works" much better than the usual nail, which strives to slip out of the timber under the influence of operational loads. The self-tapping screw is held in the wood almost "tightly".

However, not all screws demonstrate such stability, but only special self-tapping screws for the flooring. The tip of such a hardware product is equipped with a "spatula" - a tip, the shape of which resembles the cutting edge of a feather drill. Thanks to this tip, the screw can be screwed into wood of any density without preliminary drilling at the mounting point and gets stuck in it.

The wood fibers are woven into the helical groove on the self-tapping rod and do not allow them to move under the influence of lateral or longitudinal loads. It is possible to dismantle such a screw only by the moment of rotation, turning the screwdriver on the reverse.

As a result, the fastening of floorboards with self-tapping screws of this type is carried out very quickly, and the board itself remains stationary until the coating or beams are destroyed.

Moreover, as "sex" self-tapping screws, hardware products with a countersunk head are used, the diameter of the core part is 3.5 millimeters and the length is from 35 to 55 millimeters. Such a screw will not “split” a thin floorboard and will pierce a sufficiently thick flooring. Moreover, for the most gentle installation mode, both the pitch of the screw thread (1.8 mm) and the angle of the groove (40 degrees) were selected. Therefore, it is simply impossible to split even the thinnest and most fragile floor covering with such a self-tapping screw.

The coating of such a self-tapping screw also deserves special attention. It guarantees anti-corrosion protection of both the conventionally visible part - the cap, and the rod hidden in the board. A coating based on copper and zinc is applied to the self-tapping screw with a micron layer (using the method of electrolysis spraying), therefore, every square millimeter of the product is covered with this protection.

Scheme of fixing the board with self-tapping screws

We have already figured out what screws to fix the floorboard with, so let's move on to an overview of the flooring installation technology.

Interfloor and basement ceilings can be assembled on the basis of concrete slabs or beam structures, sheathed with a finishing and rough layer of sawn timber. As the first (rough) layer, a 5 cm thick planed board or an oriented strand board about 2 cm thick is used.

An additional layer of thermal insulation is rolled out on top of the rough coating (a polystyrene film 1-1.5 mm thick), on which laminate, parquet, linoleum or floorboard are laid.

For fixing the finishing coating, as well as for fixing the "sub-floor" slab to the lathing, use the "floor" screws of interest to us. Moreover, fastening is possible both through the board, when a self-tapping screw pierces the surface of the coating at a pre-drilled point, which is then sealed with a "hatch" made of the same wood, or through the lower edge of the crest-shaped lock cut at the side end of the board.

However, the direct fixation method will still be more reliable, and the operation itself will be much faster.

Well, in practice, the process looks like this:

  • On top of the heat-resistant coating, along the walls, boards are placed, laying them on the end. Thus, a gap is formed between the first row of boards and the wall, which will then be closed with a plinth.
  • Next, the first row of boards is laid along the wall, which is mounted with an emphasis on the masonry located at the end. The second row is laid with an interval - the transverse seam should be covered with a whole board from the previous row. Etc.
  • After 3-4 rows, the boards are "knocked down" together, moving them to the wall. After that, you can start drilling countersunk holes and fixing the board with a self-tapping screw, followed by gluing the sadness of the attachment with a veneer from the same wood. Self-tapping screws are screwed in with a step of 30-40 centimeters, but at least two pieces per board.

After the completion of the operation, the finishing surface is shaded with "stain" and opened with varnish, which will fill the gaps between the boards and finally fix the veneer "hatches" over the countersunk holes.

This fastener is used for cladding the facades of a house with a block house or imitation of a bar, fastening to the walls of a wooden lining, laying a floorboard, installing a terrace board on a wooden frame and installing a rafter system of hipped roofs. Also self-tapping screws for the floor can be used for fastening thickened waterproof plywood when performing formwork in monolithic housing construction.

Qualitative characteristics

The most common self-tapping screws for spax parquet consist of several parts:

  1. The lower part is made in the form of a drill, which is screwed into the wood and prevents cracking even on a thin board. In this case, some of the turns remain in the base, to which the coating is attached, which ensures a reliable connection.
  2. The upper part of the fastener is made in the form of a smooth neck, which remains in the board itself.
  3. The thin head has a locking edge and a tapered shape that widens the top of the hole. In this case, the head is completely recessed into the tree.
  4. Qualitative self-tapping screws for parquet are made of stainless steel or carbon steel. To prevent corrosion, some of them are covered with a resistant zinc coating. Needed self-tapping screw for floor boards, price which is below market, can be purchased from an authorized representative of the manufacturer.
  5. Hexagonal socket for planting the tool, eliminates the turning of the tip and provides a smooth entry of fasteners even into the densest wood.

How to choose

I am present in the markets self-tapping screws for fixing parquet different lengths. To ensure a reliable connection of the board or parquet to the base, it is necessary to choose the optimal size and buy self-tapping screws for parquet from a well-known seller. To do this, it is advisable to follow the following recommendations:

  1. If used self-tapping screws for solid wood parquet, then they should have a length of 2 times the thickness of the lamellas.
  2. In order to fix the floor element near the skirting board, you must use self-tapping screws for floor boards thickness exceeding the thickness of the coating by 2.5 - 3 times.
  3. If the cover is mounted in a groove, then you can use self-tapping screws for wood floor the length is 1.5 times greater than the thickness of the lamellas.

How to mount

Solid wood flooring is laid with a groove to the walls. The first row is attached through the front part, which will be closed with a plinth. The fasteners are screwed in after 30-40 cm. The next row is inserted into the groove of the previous one by light tapping and pressed with a wooden wedge.

Self-tapping screws are screwed into the thorn in such a way that the cap is completely sunk into the tree. In this way, the entire coating is mounted. The last lamellas are sawn and fastened through the front part so that the heads disappear under the skirting board.

When arranging flooring in your home, you need to pay close attention not only to the type of materials used for this. It is necessary and especially careful to choose the method of fixing the cladding.

Everyone knows that every building material needs its own type of fixation and the way it is used. Not an exception, in this case, and a boardwalk.

Considering all the loads that fall on the floor cladding, the choice of the method of fixing the boards is very, very important. When individual floorboards are not firmly attached, after a period of time (often very short), they begin to loosen. They change their original position, even and smooth at first the floor begins to creak underfoot, and often just collapses.

This article is about how to fix a floorboard correctly and efficiently. In doing so, the most reliable and common methods will be considered.

Existing fixation methods

The floorboards are fixed in three main ways:

  1. the so-called secret - with the help of nails or self-tapping screws;
  2. glue analog;
  3. and using clamps.

Fastening boards with nails

  1. In this way, the boards are fixed, as a rule, on a wooden (solid or assembled from a lag) base.
  2. The initial row of floorboards is laid with nails driven into the base through the tongue at an angle of 45 degrees. Then they are driven into place.
  3. To avoid damaging the grooves, holes for fasteners must be pre-drilled with a drill.
  4. In the process of fitting the next row of boards, the carnations must be hidden.
  5. All other rows of planks are fixed by hand with nails, in the usual way - through their surface.

Note! When several floorboards need to be replaced when repairing the flooring, make sure that each one ends under the center of the ledger. Otherwise, the coating will not be durable.

Adhesive mounting method

When the board cladding is mounted on a solid base, glue can be used to fix it.

  1. For this purpose, the grooves of a row of boards are lubricated with an adhesive (for example, ordinary PVA), before they are pushed onto the grooves of an adjacent row.
  2. The instruction prescribes to apply the adhesive in a thin layer of 1/2 mm, every 0.5 m, along the entire surface of the groove.
  3. The compound also covers the end grooved edges.

Clamping

Some manufacturers supply the boards with clips that slide into the slot on the inside of the boards. These elements are needed to fasten the strips together.

A little about how to properly fix the floor in a scanty way.

  1. After setting up the sub-floors, lay a layer of waterproofing on them. Secure the material to the walls with self-adhesive tape.
  2. Hammer in the clamps in the direction of the tongue into the slots of the first row of boards to be laid.
  3. Lubricate the planks with glue along their end seams. Lay the first row.
  4. Place wedges approximately 1 cm thick between the wall and the boards.
  5. Next, attach the clamps to the second row of planks. Tap gently with a hammer (through a piece of protective bar) along the edges of this row to secure the floorboards.
  6. The installation of the entire coating is carried out in a similar way.
  7. Next, remove the wall wedges and install the skirting boards.

Special self-tapping screws for floorboards


install the skirting boards.

Special self-tapping screws for floorboards

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Special self-tapping screws for floorboards


  1. Such fasteners are produced in several standard sizes: 3.5 × 35, 3.5 × 40, 3.5 × 45 and 3.5 × 50 millimeters. The size of the screws is selected based on the thickness of the floorboards used.
  2. Such self-tapping screws have a protective coating that prevents corrosion foci on them.
  3. There is a cutter at the tip of the mount. It makes it possible to drive screws into wood without drilling prep holes.

Note! This design provides a tighter entry of the screw. Consequently, the fixing of the boards to the subfloor is also more durable.

  1. The geometry that the milling cut has is special. Its angle is chosen in such a way that the screw enters the wood easily, without splitting the planks.
  2. Another characteristic feature of self-tapping screws for floorboards is that there is no thread on their upper part. This circumstance contributes to a tighter adhesion of the floor covering to the base.
  1. The step between the individual screws when fixing the planks to the base should be between 25 centimeters and 30 centimeters.

    used when laying plank floors. For this purpose, it is necessary to recessed the heads of the screws into the wood by 3/4 millimeter. The hole formed as a result of these actions can be closed using a piece of wood that matches it in shape and size. Its breed must be the same as that of the floorboards.
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Most construction work is not complete without the use of fasteners. Self-tapping screws occupy a special place among them. They allow fastening without drilling a hole. However, ordinary self-tapping screws cannot be used to fasten wood elements, as they can cause them to crack and deform. All this will lead to a deterioration in the appearance of the coating and reduce its wear resistance. However, special self-tapping screws for a solid board of the German company Spax will help to solve this problem. This patented product belongs to the German company ABC Verbindungstechnik.

Features of Spax self-tapping screws


Fasteners have been specially designed for fixing parquet, block house, parquet and solid boards, assembling furniture, decking and other solid wood or plywood products. In the course of long-term development and laboratory research, a special structure of a self-tapping screw was invented, which greatly simplifies and speeds up the assembly process without damaging the wood, cracking and deforming the product.

Spax self-tapping screws are available in carbon steel or stainless steel. The element is coated with a zinc anti-corrosion layer. Some fasteners are covered with brass to increase their moisture resistance. Brass plating is also required for fixing natural wood products.

The head of the fastener is located with a slight inclination to the axis of the product. This allows the fastener to be completely recessed into the thickness of the wood material. To prevent spontaneous unscrewing of the screw in the process of natural deformation of the solid wood product, the body of the self-tapping screw has a wavy profile. All this gives the fastener a great holding force.

The product consists of four parts:

  • self-drilling quadrangular tip, which allows even very thin boards to be fastened without cracking;
  • several undulating and smooth turns, which ensure smooth and easy screwing of the product into the solid wood (the number of turns depends on the length of the fastening element);
  • thin smooth self-tapping screw legs, which are completely immersed in the wood;
  • a special hat with a special design for secret fastening and clumsy edging.

This design of the fastening element facilitates quick installation of the solid wood board without splitting. At the same time, even non-professionals can work with fasteners. Spax self-tapping screws allow you to pull one board to another or to the base during work.

Attention: for very hard wood species, the manufacturer recommends pre-drilling the hole with a thin drill.

The price of packing of Spax fasteners is 38-45 USD. The package contains 500 pieces. The consumption of self-tapping screws for each square meter is 20-25 pcs. Each package contains a bit, which is enough for 250 screws on average. Additionally, you can buy stainless steel bits for a cross and a hexagon.

Advantages of fasteners of this brand


Spax self-tapping screws have established themselves all over the world as the best fastening element for natural wood, OSB and fiberboard flooring. While traditional self-tapping screws lead to damage and cracking of expensive solid wood material, Spax products provide not only a high-quality and reliable connection, but also the integrity of the board, as well as the beauty of the coating. In addition, they significantly speed up and facilitate the installation of the face layer of a solid wood floor.

Advantages of Spax self-tapping screws:

  • The four-sided tip of the Spax fixing element makes it easier to screw in and protects the board from cracking. This shape of the tip neatly removes wood fibers, protecting the solid wood product from damage.
  • The wavy profile of the screw promotes a smooth ride and reduces physical stress when screwing in.
  • The patented milling tip of the fastener allows it to be screwed in without pre-drilling a hole. The head of a self-tapping screw with a cutter makes a hole by itself during the screwing process.
  • The special design and inclination of the head provide a secret fastening and prevent the fasteners from being twisted after installation.
  • The set with self-tapping screws includes T-Star bits, which contribute to the complete fit of the key in the head, simplify work at any angle of screwing and provide the necessary safety of work.
  • To prevent spontaneous unscrewing of the product during the operation of the floor covering, a special perforation is provided on the back of the head. It has a braking effect on the fastening element.

The choice of self-tapping screws Spax


Self-tapping screws of this brand are available in different lengths. To correctly select the length of the Spax fastener for a solid board, follow the following rules:

  1. The length of the fastening element should be 2-2.5 times the thickness of the board when fastening solid wood products into the thorn.
  2. When fixing in the groove, the length of the self-tapping screw should be 1.5-1.9 times the thickness of the massive floor covering. This method of fixing is used only when installing the outer boards.
  3. The length of the self-tapping screw, which is 2.5-3 times the thickness of the floor product to be laid, is needed when fixing through the entire thickness of the board to the base. This fixing method is used only when laying the first and last floor element in the places where the skirting board will be installed. Also, fastening through the entire thickness is used when laying a plywood base on logs.

Fastening a solid board with self-tapping screws


Usually, a solid board is laid with glue on a plywood leveling layer laid on the base. The choice of glue depends on the characteristics of the board. It is better to use not water-based adhesives, but formulations specially designed for gluing solid boards to a plywood base. The installation sequence for solid wood flooring using Spax self-tapping screws is as follows:

  1. It is imperative to maintain a gap of 0.7-1.0 cm between the walls and the floor covering. To do this, spacer slats of the required width are laid along the perimeter of the room along the walls, which, after laying the covering, will be removed, and the gaps will be closed with a plinth.
  2. Apply special glue to the plywood base and the back of the board using a notched trowel and lay the first row of boards along the wall, pressing them close to the spacers. Solid wood products of the first row are laid with a groove to the wall.
  3. We fix the boards to the floor using Spax screws. The pitch of the fasteners is 30-40 cm. Only the first row is attached to the base with self-tapping screws through the front surface in the place where a part of the board will be covered with a plinth.

Important: each element from the array must be fixed to the floor with at least two fasteners.

  1. We put the next row on glue with a shift of the transverse seam by at least a quarter of the board compared to the previous row, but not less than 25 cm. The grooves of the elements of this row are inserted into the ridge of the boards of the first row. Then the ends are tightly knocked down with a bump bar.
  2. We also attach this row to the base with self-tapping screws, pressing it tightly to the boards of the previous row. Self-tapping screws are screwed into the spike so that the cap is completely recessed into the thickness of the material.
  3. Similarly, we install the entire solid wood flooring.
  4. Saw the boards of the last row to the desired width. We fasten them in the same way as the elements of the first row, through the front part with long self-tapping screws through and through in the place where the plinth will subsequently be installed.
  5. The final stage of laying the flooring will be the installation of the skirting boards.