Dry floor screed : Instructions on the construction + Video

Any modern flooring requires prior surface-base alignment.For this purpose, you can either use the traditional concrete screed (wet) or do without dirt, water, and not to spend a few weeks, waiting for complete solidification surface.

Dry screed - photo

Use dry screed, in addition, because of its light weight allows you to align the floor even in homes where not desirable to increase the load on the load-bearing floors, as well as in the dry screed is easy to install partsheating system and perform the necessary laying communications.In addition to all the positive qualities of dry screed - a heat and sound insulating material of excellent quality, and laying his own hands is possible at any air temperature and time of year.

What is dry screed

Dry screed is a type of bulk material of different fractions, which is filled with a thick layer on the pre-prepared subfloor or floor joists dismantled.On top of the mount plate gipsovolokna (GVL) or other material.The number of layers may vary from one to several.On the perimeter necessarily required damper laying tape.

Dry filling screed floor

Where to start laying the dry screed

First of all, should be prepared to work surface floors.

• - dismantle the old flooring.
• - there is a gap and the gap between the floor slabs and walls are sealed cement mortar and sand.Optimal use of cement brands above 150.
• - Remove the dust and dirt from the mounting recesses and potholes.

Installation Waterproofing material

flooring onto the prepared subfloor surface of plastic film, paper impregnated with bitumen or glassine - a mandatory step.If they are neglected, then the condensate, or a pair of first the leakage would lead to swelling, dry filling, and the appearance of defects on the surface of the flooring.

1. - Prepare damp-proofing material (thickness select more than 250 md), cutting it into strips with the expectation that the film projection on the wall will be about 20-25 cm
2. -. The edges of the layers of the film should go at each other, we fix themscotch.

Laying polyethylene film on the floor

Laying a noise insulation material

Most of the sound waves in the room comes through the solid elements of the building (ie, wall).Therefore it is very important to the perimeter of the walls adjacent to the screed to lay a layer of tape zvkokoizoliruyuschey (PE foam or glass wool or strips of mineral materials) about a centimeter thick.

addition to insulation such tape (tape damper for floor screed) compensates for the increase in volume that occurs when the temperature rises.

Puts a damper tape for floor screed

Choice, filling and leveling of bulk material

For dry screeds apply homogeneous bulk granular materials.They must have the following properties:

• - incombustibility;
• - the ability to retain heat well;
• - ease;
• - extremely low shrinkage values.

Suitable for dry screed backfill include fine-grained slag, sand, as well as applicable waste remaining in the expanded clay production (itself expanded clay in its purest form used in the work are not permitted).

Open the bags and fall asleep selected material on the film.The layer thickness of not less than two centimeters.For large floor uneven layer can be increased up to 6 centimeters.If the layer is necessary to perform even thicker, it will be necessary to strengthen it with an extra layer of plates.The thickness of the coupler taken from the highest point on a rough surface.To do this, use a laser level and a tape measure, making the markings on the walls - a flat horizontal line for the convenience and accuracy of the operations.

By this stage in the room have to be completed all work on testing and installation of heating systems and electrical wiring.

To align the bulk material to be applied U-shaped metal profiles.They must be installed in parallel rows from wall to wall.It is important to check the horizontal level of the building.

Puts guiding beacons

using the right (a wooden board or metal section) align cover.To do this, we carry out the rules on the guide profiles, raking extra filling.

Alignment granular mixture according to U-shaped beacons

order not to spoil the tie and not disturb her flat surface laid on filling several broad planks to move them in the process of mounting the next layer.

layers of materials for dry floor screed

Laying slabs GVL

Under plates or elements of the floor, suitable for dry screed, understand: gipsovolokonnyh sheets of moisture (GVL), chipboard (ordinary or grooved), Plywood water-resistantsheets of asbestos or Styrofoam plates.A distinctive feature - the presence of a special bevel on the edges of plates for mounting.

gypsum fiber boards for floor

Laying produce from the door, if the plate is placed on the free-flowing mixture, or from the opposite wall, if the base - insulating panels.

If the walls of the room have protrusions in the form of columns or prominent corners, cut exactly along the contour of the plate, tightly pressed to the wall, completely eliminating any gaps.

start laying slabs

not worth much to dent the plate in the filling.Then put on the chamfer construction adhesive.

plates glued together with an adhesive

Puts the next floor element and in increments of five centimeters at a right angle is screwed screws (screws), pushing it on their plates 1 mm in the material.This will provide sufficient bond strength and eliminates the appearance of cracks in the operation floor.

samples of different variants of fastening plates GVL

sure to check the level of the floor is horizontal throughout the assembly stage dry screed.

Laying tiles on concrete block

If decorative coating requires an increased strength of the base (eg, block parquet), it is necessary to put another 1-2 layer gypsum fiber sheets.Installation is performed similarly to the first layer, between a building slab should promazyvat adhesive.

After completion of all works projecting an edge clipped the tape around the perimeter of the room, make plaster heads of screws and proceed to the installation of decorative coatings.

Cost of materials

floor elements KNAUF (in multiples of 5 pieces size 1200h600h10 mm): 280-300 rubles per pack.

construction adhesive (depending on the brand of the producer and the volume of package): 50-550 rubles.

Dry filling floor KOMPEVIT company (packaging in bags of 40 liters): 180-205 rubles per 1 bag.

Tape for edges in rolls: 300-350 rubles per roll.Plastic film

100-150 md: 10-48 rubles per meter 1,5h2 sheets.

Screws (packaging 1,000) Knauf: 300 rubles.

Guide profiles Knauf (length 3 m): 75-114 rubles.

Video - dry floor screed in the apartment with his hands