Fastening wood to concrete: the use of specialized

In this article we will look at the question of how to glue a tree to concrete. The problem of combining these materials, sooner or later, are faced by many people who started repairs in an apartment or house.

The need to glue such materials occurs when a wooden floor is laid on a bare concrete screed, or plinths are installed with their own hands, wooden fillets are mounted, etc. However, sometimes fasteners are needed for more solid and weighty items and this leads to additional difficulties.

Fastening methods

Over the long history of construction, a large number of ways of fastening wood to concrete have been tested. Among the current and widely used methods we note the use of specialized mounting adhesives and the use of fixing hardware.

Consider the features of the implementation of these methods and find out what materials are optimal for carrying out such work.

Application of specialized adhesives

If reinforced concrete was cut with diamond circles, and now it is necessary to install wooden parts of small size and weight, you can use special mounting adhesives.

Properly chosen adhesive allows you to securely fix not only baguettes or plinth, but also overlays on the stair steps. However, you need to understand that the range of adhesives is wide, and therefore it is necessary to rely on the optimal result only in the case of proper selection of tools.

If you need glue for concrete and wood, pay attention to the following compositions:

• Construction glue "Liquid nails" - this is a relatively inexpensive and at the same time effective solution for working with materials of interest to us. “Liquid nails” are presented on the market by several modifications, namely, “Universal”, “Express”, “Superstrong”, “Particularly durable”, “For panels”, etc.

If the question is how to attach a wooden block to a concrete wall, a particularly vicious and universal modification would be the best choice.

The universal type of glue "Liquid nails" is an excellent choice for application in an interior. For example, with this tool you successfully glue the wall panels of lumber to pre-cleaned and dust-free concrete.

But if you are interested, then how to glue wood to concrete at sub-zero temperatures, you will need very strong “Liquid Nails” with a setting power of up to 70 kg per 1 m ?. Such glue will keep the wood even on uneven concrete at temperatures up to -17 ° C.

• Glue "Moment" - This is a wide range of different compositions with different technical and operational properties.

Of particular interest is the modification of "Epoxyline", which is a two-component composition that works with a wide range of materials including concrete and wood.

After drying, the composition not only reliably holds the glued surfaces, but can also be ground or subjected to other mechanical processing without detriment to adhesion strength.

Another modification of the glue Moment, through which you can connect the concrete with wood, is Moment Joiner. This tool has found wide application in the process of laying flooring made using lumber.

Polyurethane foam is a good option for simple and effective bonding.

If necessary, as a glue, you can apply a foam of increased strength. This is a good solution for flooring wooden floors, installing window sills, wall panels, etc.

This method of joining two surfaces is characterized by a number of advantages, including:

• reasonable price, in comparison with other gluing structures;
• high strength compound after complete drying of the composition;
• low degree of thermal conductivity, which is important when finishing floors and walls;
• excellent sound insulation qualities;
• hydrophobicity;
• biological stability;
• simple application instruction.

However, there is a significant drawback, namely the prolonged drying of the foam. Therefore, for 5 minutes, the glued part will have to be held in the desired position so that it does not move away from the surface.

Important: To ensure optimum contact between the surfaces to be bonded and the foam, they should be lightly moistened with water.

Surface preparation is the key to success

Whichever of the above compositions you would not choose, before you attach the tree to the concrete, both surfaces must be properly prepared. In order for the installation work to be a strong and durable connection, both surfaces must be as smooth, dust-free and degreased as possible.

The main problem is the porous structure of the material, especially if diamond drilling of holes in concrete was carried out. This property is the cause of excessive absorption of adhesive compositions, and therefore the connection does not have time to gain proper strength.

It is easy to make a concrete coating predisposed to gluing, for this you need to reduce the number of pores. For this, deep penetration primers are used, which infiltrate into the porous structure of the material and solidify there. As a result, the micropores are closed, and the density of the concrete allows the use of glue.

Important: Glue wooden parts to pre-prepared concrete bases should be in strict accordance with the instructions of the manufacturer of adhesive compositions.

Fasteners with dowels

If you need high-quality and durable fastening of a wooden pillar to concrete, ordinary glue or foam is indispensable. In this case, you can apply mounting hardware, designed for high mechanical loads.

Heavy wooden parts can be attached using dowels, nails and anchor bolts. The principle of operation of these fasteners is similar, since after they fall into the concrete, their working part begins to burst. As a result, the fastening of wooden posts to the concrete base is very durable.

Conclusion

There are many ways to reliably connect concrete surfaces with wooden parts, but maximum strength will be guaranteed in the case of preliminary preparation. The need for primer and dust removal of concrete is no longer necessary if the joint is used by means of dowels.

You will find more informative and useful information by watching the video in this article.