Dry floor screed with their hands
Having decided to make major repairs apartment orrenovated house, you notice that the floors are not straight? In this case, you will need to align floors. floor screed can be wet, semi-dry and dry.
Dry floor screed - technology on which floorequalized through falling asleep with a layer of loose material. On top of stacked sheets of loose materials, which provide a flat surface. This procedure takes a couple of days in the two-bedroom apartment, and floors can be operated immediately after installation.
- Characteristics of dry floor screed
- When used dry floor screed?
- Materials for dry floor screed
- The technology of dry floor screed
- Preparation for floor screed
- Waterproofing - a mandatory step
- The edge tape - the insulation
- Filling leveling layer
- Overlapping layers Sediment
Characteristics of dry floor screed
This new, but promising method is usedthe regeneration of the rough flooring as in the construction of new buildings and the repair of old ones. The load that can withstand such floor kgna1 -500 sq. meter. This screed does not creak, not bursting, as wet after drying, does not separate when the temperature drops.
It is relatively cheaper in installation and material costs. Dry floor screed has several advantages:
- smooth floors;
- low price;
- ease of installation;
- no wet work;
- accelerated time frame.
When used dry floor screed?
Dry floor screed is suitable in cases when:
- to align curves floors;
- there is a need to strengthen the old wooden floor;
- on the floor passes electrical wiring or pipes;
- you need to quickly lay the floors;
- Winter in the yard, but nowhere to put off the repair;
- It has the opportunity to make repairs in the rooms one by one.
Materials for dry floor screed
If your plans for its dry floor screedhands, then you will need to explore the market for the materials and choose the most safe and quality. Especially it should be noted the construction materials company Knauf. For dry floor screed will need:
- insulation (if necessary); dry backfilling;
- vapor and damp-proofing material;
- Attenuation (skirting tape of polyethylene foam);
- fixing screws; glue.
Tools for dry floor installation:
- Profile for lighthouses guiding rule;
- board for tamping bedding.
Dry filling floor screed must havehigh porosity, flow properties, low hygroscopicity incombustibility. The material should not give shrinkage. . The thickness of the dry bedding - okolo5 see the most suitable for this purpose:
- screenings of expanded clay;
- natural sand (quartz and silica);
- Artificial perlite;
- Fine-grained silicate slag.
Steam and damp-proofing material protects floorsfrom getting wet. As a material used universal vapor barrier plastic film. For concrete floors take a film thickness of 200 microns, for wood - heavy paper impregnated with asphalt, roofing felt or asphalt.
To cover the bulk layer is usedgypsum sheets, particle boards, thick waterproof plywood, asbestos cement sheets or OSB (oriented DSP). The most suitable and have all the necessary qualities of gypsum sheets. They are produced by compression of the crumb gypsum and fluff pulp (cardboard, paper), and to enhance the strength of reinforced and impregnated with the hydrophobic composition. On the front side of their grind. The thickness of the sheets of gypsum fiber board - 1-2 cm, area - 2,5h1,2 m.. or 1,2h1,5 square meters, density - 1250 kg / m ?. There are sheets of plain and water-resistant. They have fire and sound insulating properties, are environmentally friendly, resistant to deformation, moisture resistant. Mounted easily, and are inexpensive.
The technology of dry floor screed
Dry floor screed, a video which you can see here, is carried out by the following algorithm of actions.
Preparation for floor screed
The surface of the screed for the future should be cleanand dry. The old flooring for this tear, remove any debris, clean the surface from dust and dirt. Carefully study the surface of the slab. It can be cracked, cracks, bulges or depressions. All slots are hermetically sealed cement-sand mortar or mounting foam.
Waterproofing - a mandatory step
Surface veiled film or other material that will provide steam and waterproofing. Stack of overlap, so that stripes came over one another by 25-30 cm.
Particular attention should be paid to places of floor connections to the wall. Here, the film should be prozapas, above the level of the floor on the future of 6-10 cm.
The edge tape - the insulation
Along the perimeter of the room, on top of the waterproofing,laid an edge strip made of polyethylene foam. Its width should be no less than the level of the material is poured. Fastened it on a double sided tape. You will need this in order to soundproof a room. That is, during operation of the screed will not rest against the wall itself, and between them will be a soft layer of polyethylene. This tape will also prevent dry screed deform under the influence of colder heat.
Filling leveling layer
A layer of loose material must be at least 5-7see. It all depends on the quality of the base (the presence of bumps, pipes, wiring) required floor level, his intentions to warm. For thinner poured concrete block or small different kinds of sand. To layer turned out thicker, or sleep more materials, or use coarse expanded clay. Alternatively, instead of using thermal insulation filling. This can be a mineral wool or expanded polystyrene. If necessary, they are cut into pieces and placed in a butt joint, avoiding cracks and crevices. After mound effected, the material should be perfectly aligned. They do it with the help of guides and sliding them rules. And you can use two U-shaped profile, placing them at a distance slightly less than the length of the rule.
To align the floor, take a level, put onedge profiles and check levelness. More generally pulled on itself, on its surface is not torn, so shoveling the excess material and smooth the screed. This procedure is carried out over the entire surface of the profiles to rearrange from place to place.
Overlapping layers Sediment
Before you lay gypsum boards, they need to rest in bed for about a day. The first element and those that are located along the walls, saw off rebate.
Then calculate how much the level risesfloor. This insulation height (20-30 mm) and a minimum of 2 GVL sheet (20 mm). Make the appropriate layout and cutting. In this case, it works well rule that you need to measure seven times. Tape measure and pencil will help determine the distances and marking sheets. And with a jigsaw or a handsaw to cut the excess pieces of gypsum fiber boards. This should be done on a flat surface. As required stripped edge roughing plane.
Gypsum sheets stacked in layers 2-3. To do this, on the surface of the bulk material placed aligned fragments of gypsum material. On them and need to move, so as not to damage the prepared layer of dry backfill. Laying begin from the wall with the door opening from right to left. Stack plates GVL convenient, as they have in the ends of the grooves for a correct connection. This should be offset, as the laminate is laid.
To floors were stronger seams between sheets should beprokleivat PVA glue and connect the fastening screws at a right angle. utaplivat screw head need a depth of about 1 mm. After the first layer is laid, it thoroughly coated with the adhesive, and already put on top of the second layer. Together they joined and held together by glue and screws. Do it on the perimeter, through every 15 cm. Therefore, self-tapping screws (19 ili22 mm) take about 20 pieces on one sheet. They must be protected against corrosion.
The resulting gaps and the places where installedscrews, sealed with putty. Using a knife, remove the remaining stick out above the gypsum fiber boards waterproofing pieces (film) and the edge of the tape. This rapid floor can be built for 1 day. He will be a strong barrier to get into the house cold and heat loss. The very next day after the dry floor screed, you are ready to continue all other repairs.