Pros and cons of the dry floor screed technology and its devices

Dry floor screed can be done even alone

What are the characteristics of dry screed

Probably no one method is the creation of ties is not as original and, at the same time, simple in execution, as a dry floor screed. Pros and cons of such a leveling base we will have to consider further. This method was invented not so long ago, but already very popular, especially among owners of private houses.

And no wonder, because they often are wooden floors, eliminating the use of liquid leveling compounds without the use of an impressive waterproofing layer that carries an additional Statement costs.

The method of dry floor screed arrangement is popular

From the title it is clear that all components are dry screeds do not contain liquid. It is sometimes called "modular floor", which makes sense. After all, it consists of two independent components:

• the filling portion, which may be, for example, of expanded clay chips, of about 5 mm. It not only evens out the surface, but also has excellent sound insulation and poor thermal conductivity. There are other free-flowing materials with similar properties, which will be discussed below;
• solid sheeting made of gypsum plates which are laid over the filling. They put any type of topcoat.

Principle everything dry floor screed

There are a variety of loose materials that may be used to create a floor screed dry method. It features all different, but they can be considered in more detail:

• expanded clay or crumb of it. It is heated to a high temperature and foamed clay. Due to the very low density - almost weightless, but has excellent insulating properties;
• expanded vermiculite, which is a naturally occurring material having a very small weight (1 m³ weighs 160 kg). Sometimes it is justified to use more than the use of expanded clay;
• expanded (heated to 1000 degrees) perlite. Volcanic material stripped by heating all moisture.

When working with perlite filler as dry screed to avoid drafts

The topsheet can be made from different sheet materials. We list the ones that are most appropriate for dry floor screed. Pros and cons of each have their own:

• wood particle boards (Particleboard) - all known old material obtained by molding and resin impregnation of wood chips. It has a moderate cost, easy to install, but fears moisture and contains a not entirely harmless substances;
• gypsum board (GCR) - conventional plasterboard layer of gypsum sandwiched between two layers of heavy paper. Material is convenient to handle, it is cheap, but also afraid of water;

As an upper layer of a dry screeds can be used water-resistant plywood

• slabs gipsovolokna - plasterboard similar material, but in its composition has a reinforcing mesh, which increases the strength. There are water-resistant. Their surface is coated with liquid impermeable material. screed such sheets can hold even in the kitchen and bathroom;
• gipsostruzhechnaya plate (GPS) - is a mixture of gypsum and chip bonded resins;
• water-resistant plywoodHaving very good moisture barrier properties.

Useful advice!Select the sheet material should be taking into account, in which the premises is scheduled to make a dry floor screed. The pros and cons of each should be considered in the context of how well it is protected from moisture and what its strength characteristics.

The bulk of the filler layer of dry screed convenient to hide the wiring Communications

How to make a screed floor with his own hands: video and description of the method of dry stacking

Today, there are many video instructions on how to make a screed floor with their hands. Videos, including shows in detail, and a dry method. As in any business, the production of works on the device dry screed must first prepare the ground.

To produce this dismantling: Free space on the old floor, cement residues and other structures. The holes near the utilities are buried with foam or cement mortar. After that, make waterproofing membrane, setting on the walls to the level of finish. The room must be completely dry.

The upper edge of the damper tape should come to the surface finishing coating dry screed

Via laser level set beacons on the heights, where it is planned to make the alignment of the upper layer, and on the perimeter walls must be secured to compensate for thermal expansion, the tape. Its upper edge, too, must come to the surface finish.

Related article:

Pros and cons of a semi-dry floor screed and its technology unit. The technology of creating a semi-dry floor screed with his own hands, its characteristics and properties. The algorithm performance semi-dry screed floor.

The bulk material is poured between beacons and leveled with a rule or it rails. The layer can receive different thicknesses of 30 to 60 mm, which is normal, as it also is necessary to equalize.

Gypsum sheets of the upper layer of dry adhesive tie attached and rigidly fixed by screws

Useful advice! If it turned out that in some places the layer thickness exceeds 80 mm, the boards need to put in two layers. This will strengthen the tie and would not let her prosest over time.

Gypsum sheets are placed directly on filling, displacing them relative to each other by 40 cm. Pasting a sheet between a conventional construction adhesive PVA. Thereafter, the sheets are attached with screws to the beacons rigidly fixing them on the horizon. Above the sheets can be mounted in any decorative topcoat.

Dry screed can be used for decorating floor heating

As with everything else, dry screed, there is one, but significant drawback. This fear of abundant moisture. If enough of it falls on the surface of the plates and will not be removed immediately, there will be swelling of the material to damage finish.

After considering all the nuances of laying of dry screed, it can be concluded that its use is justified in those areas where the water used is small, and the risk of flooding or other emergency is minimal. The apparatus of this form tie in bathrooms and lavatories entail certain risks, even with use of plates with a moisture resistant coating.