The use and installation of reinforcing mesh for floor screed

floor screed perform surface leveling prior to laying decorative floor coverings.Under screed floor heating can be installed (both electric and water heating).In addition, the floor screed floor gives strength and allows you to evenly distribute the load.To irreplaceable in construction, but quite fragile concrete (especially screed thickness of less than 8 cm), do not crack or crumble over time, taking on various types of loads, produces reinforcing ties.

Screed, Screed species is an intermediate layer between the sub-floor and decorative floor covering (tile, laminate, parquet, etc.).Screed can only be used for floor leveling with concomitant load distribution function, or provide additional heat, hydro, soundproof room.Screed monolithic.For her, using concrete of different brands and types (sand-cement, sand and gravel, foam, keramzitbeton, penopolistirolbeton etc.).Floating screed.In this case, the base is separated from the heat tie layer of waterproofing material (e.g., when the cement-sandy concrete is poured on a plastic film or mineral wool), or combinations thereof.

Screed classic.This screed is poured directly on the substrate without any additional materials (polyethylene, etc.).In this case, after drying screed becomes inseparable from the support base.

Reinforcing mesh for floor screed, types, purpose

reinforcing mesh produced in two forms: extended armature (metal mesh - welded or rod, polypropylene or fiberglass surround frame)and reinforcement of the dispersion (fiber glass, steel, basalt).Each type of mesh is designed for a certain type of screed.Perhaps the combination.Metal mesh, laid in mortar, eliminates the appearance of cracks and subsidence, ensures strength with finished floor operation.Netting made of plastic does not corrode, is much cheaper and lighter metal. Precast concrete reinforcement In this method, the reinforcement armature segments bonded together plastic or steel wire welding machine so as to obtain square cells with a side of 10 to 20 cm. Lay this frame is not on the rough floor, and on special supports.Recommended mesh stacking two layers.With the ability to handle the welding machine, it is possible the independent production of reinforcing a reinforcing mesh, but can not be excluded defects in the form of thinning of the reinforcement in the joints. Ready mesh for reinforcement They are made by welded or knitted, made of polymers or metal.Nets are placed on top of layers of hydro and thermal insulation to improve the characteristics of concrete.

Installation of metal reinforcing mesh for floor screed

If screed casting thickness is less than 6 cm, it must be reinforced.Delete the reinforcement can only screeds thicker than 8 cm. For the reinforcement of the concrete screed floor most appropriate masonry grid with a mesh of 10 * 10 and 15 * 15 cm, wire diameter of 3-4 mm.In the case where the planned large load on the floor, it is advisable to use a net of thicker wire, and the thickness of the concrete casting to increase to 15 cm. It should be remembered that the reinforcing mesh should be located in the center of the concrete casting, so it is placed not on the rough subfloor, andon the substrate.Before working subfloor necessarily should be cleaned of dirt, treat the waterproofing and adhesive means to enhance heat and sound insulating materials.To the future turned out perfectly flat floor, the concrete screed perform on special guides made of metal profiles - beacons.From the correctness of their installation depends on the quality of the screed surface.

1. Using a level, determine the highest point of the existing draft coverage.At this point, the screed must be at least 4 cm.
2. In terms of (the laser, mounting or gidrourovnya) mark on the walls of a well thought-marking line.
3. expose parallel guide beacons (profiles).Wooden sticks and pipes should be avoided, it is much more convenient industrial guide plates with ribs.They produce three meters long and 2.5 cm wide
   

   Lighthouses for floor screed -. Photo

Before operation remove the existing plinth, dismantle the old flooring, plank insulating material layer of about 15 cm (concrete block, etc.).Inside claydite pillows (the middle layer) laid the first layer of reinforcing mesh.Rammed plank insulation and plastic film.

Puts reinforcing mesh with a mesh size of 10x10 cm. Grid in any case should not lie on a layer of thermal insulation.Always under it or puts a special plastic coasters, or small pieces of drywall.

Lighthouses will be put in parallel to the longest wall of the room.For convenience and compliance horizontality should be tightened between the walls of the nylon thread, which will serve as reference points for mounting brackets.When the thread taut, raise the profile of each position to stretched filaments and anchoring plaster solution or plaster.

Then you should wait about half an hour to dry plaster.Knead not too liquid cement solution (it should be borne in mind that the solution becomes unusable after two hours of mixing, so cook it at once in a large amount is impractical) and fill it between beacons.

move my right beacons, leveling cement.

Within 3-5 days is required to be poured screed with water, to maintain a high humidity in the room and monitor the absence of drafts.This is necessary to prevent cracking during the drying of cement.Complete drying occurs within four weeks.For a perfect smoothness advisable over the dry screed pour a small layer of self-leveling mixture.