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Preparation of the subfloor – conditions that the subfloor must satisfy

The subfloor on which the wooden covering, parquet or hardwood flooring is placed must be solid, load-bearing, flat as well as degreased and dust-free. If the subfloor is cement-based, it must meet a very important condition related to humidity. The required humidity of the cement subfloor, on which the parquet is installed, is 2%; with anhydrite screeds, a humidity of 0.5% is allowed. For screeds with built-in underfloor heating, these values should be reduced by 0.2%. The most reliable method of measuring the moisture in the subfloor is the CM method with calcium carbide, which should be done by a trained person with the appropriate tools, following defined procedures.

Alternatively, there are primers as well as types of adhesives that, with expert advice, can enable the installation of hardwood flooring or indoor strip parquet on subfloors with higher humidity than prescribed. This procedure should only be initiated after consultation with the manufacturer of the parquet to be installed. In its range of products Murexin has e.g. Special primer PU 5 with which residual moisture can be blocked even up to 3.5% as well as special modified silane-based adhesive (series X Bond MS-K) which can also be used on problematic subfloor.

The parquet is not cheap that you should ignore the importance of the subfloor on which you install this type of floor covering for your home.

We suggest you take a look

We suggest you take a look

In Serbia, especially in Šumadija, there is no large walnut forest or plantation, there are plantations on small surfaces or individual wild trees, yet the quality, strength, completely unique texture and color, the wood of our Serbian, Šumadija walnut ranks among the most expensive species in the world.
Wood humidity is influenced by the humidity of the substrate, as well as the conditions in the surrounding area (temperature and air humidity). For laying wood, depending on the type, the parquet manufacturer determines the relative humidity of the substrate on which the parquet or ship floor can be laid, as well as the humidity of the wood itself.
It is usually said that wood is stronger if it has a higher density. A method often used to determine the strength of a wooden floor is the so-called Brinell method.