Deciding to make major repairs or reconstruction of an apartment house, you notice that the floors in them are not equal?In this case, you will need to align floors.Screed floor can be wet, semi-dry and dry.
Dry screed - the technology on which the floor is leveled thanks to 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.
features dry floor screed ↑
this new but promising technique is used in the regeneration of rough equality as the construction of new bu
and relatively cheaper to install and cost of materials.Dry floor screed has several advantages:
- smooth floors;
- low price;
- ease of installation;
- no wet work;
- accelerated timeline.
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;
- sex runs electrical wiring or pipes;
- need to quickly lay floors;
- the court of winter and delayed repair of nowhere;
- have the opportunity to make repairs in the rooms one by one.
materials for dry floor screed ↑
If your plans dry screed floor with their hands, then you will need to study the market for the materials and choose the most safe and quality.Especially it should be noted construction materials company Knauf.For dry floor screed need:
- insulation (if necessary);
- dry backfilling;
- vapor and damp-proofing material;
- Attenuation (skirting tape of polyethylene foam);
- fixing screws;
Tools for installing the floor dry:
- profile for lighthouses guiding rule;
- board tamping bedding.
Dry filling for floor screed must possess high porosity, flow properties, low water absorption, flame retardant.The material should not shrink.The thickness of the layer of dry bedding - okolo5 see. The most suitable for this:
- screenings expanded clay;
- natural sand (quartz and silica);
- artificial perlite;
- grained silicate slag.
Steam and damp-proofing material to protect the floor from getting wet.As such a versatile material used polyethylene film vapor barrier.For concrete floors take a film thickness of 200 microns, for wood - heavy paper impregnated with bitumen, or asphalt roofing.
To cover the bulk layer using gypsum 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 chips of gypsum and cellulose fluff pulp (cardboard, paper), and to enhance the strength of reinforced and impregnated with a hydrophobic composition.On the front side of grind.The thickness of the sheets of gypsum fiber board - 1-2 cm, the area - 2,5h1,2 sq. M.or 1,2h1,5 sq.m., density - 1250 kg / m³.There are sheets of plain and water-resistant.They have fire and sound quality, environmentally friendly, resistant to deformation, moisture resistant.Mounted easily, and are inexpensive.
dry floor screed technology ↑
Dry floor screed, a video which you can see here, is carried out by the following algorithm of actions.
Preparation for screed ↑
surface for future ties must be clean and dry.The old flooring for this tear, remove any debris, clean the surface from dust and dirt.Carefully studying the overlapping area.It can be cracked, cracks, bulges or depressions.All slots are hermetically sealed cement-sand mortar or mounting foam.
Waterproofing - a mandatory step ↑
veiled surface film or other material that will provide steam and waterproofing.Stack them overlap, so that the strip came one above the other at 25-30 cm.
Particular attention should be paid to the connection places the floor to the wall.Here, the film should be prozapas above floor level next 6-10 cm.
skirting tape - the insulation ↑
Along the perimeter of the room, on top of the waterproofing, put an edge strip made of polyethylene foam.Its width should be no less than the level of the material is poured.Mounted on it is double sided tape.You will need this in order to soundproof the room.That is, during operation of the tie will not hang back in the wall itself, and among them will be a soft layer of polyethylene.This tape will also prevent dry screed deformed under the influence of colder heat.
Filling leveling layer ↑
layer of loose materials must be at least 5-7 cm. It all depends on the quality of the base (the presence of bumps, pipes, wires), the required levelfloor, insulate his intentions.For smaller thickness poured concrete block or small different kinds of sand.To layer is formed 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.Once implemented the mound, the material should be perfectly aligned.Do it with the help of guides and sliding them rules.And you can use two U-shaped, placing them at a distance slightly less than the length of the rules.
To align the floor, taking the level put on the edge profiles and check horizontality.Next usually pulled over, on the surface it does not tear so the excess material raking and even tie.This procedure is carried out over the entire surface of the profiles to be moved from place to place.
overlap backfill layer ↑
Before stacked 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 rise the level of the floor.This insulation height (20-30 mm) and at least two leaf GOLS (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 hacksaw or jigsaw cut the extra 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 this end, the surface of the bulk material is placed aligned fragments of gypsum material.In them you 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 gypsum fiber boards is convenient, since they are at the ends of the slots for proper connection.This should be offset as laid laminate.To
floors were stronger joints between the sheets need prokleivat PVA glue and connect the fixing screws at the right angle.Heads of the screws must be utaplivat to 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 the screws are installed, sealed with putty.Using a knife, remove the remaining stick out above the gypsum fiber boards pieces waterproofing (film) and the edge of the tape.This rapid floor can be built for 1 day.It will be a strong barrier to get into the house cold and heat leakage.The very next day after the dry floor screed can start to continue all other repairs.
Video: the device dry screed ↑
A video with all the technological details will get a visual representation of the process of dry leveling: