If the thickness exceeds 50 mm rough tie, it is necessary to produce reinforcing wire mesh. For the zone to produce a warming of the loggia, which would be through the floor no fed with cold downstairs. For this use, mineral wool insulation with high density, such devices are used for flat roofs. Its thickness should be not less than 50mm. Before laying the insulation on the slab overlap causing a vapor barrier, insulation is placed on it – so we have prepared for the loggia screed. Before filling the rough layer of screed is necessary to install beacons, they can be used to smooth basis for the finishing layer.
The level of lighthouses for each room set is different. It depends on the thickness of the finished floor it for granite is from 12 to 15mm, with light adhesive. For wood floors – 18 – 25mm thick plywood with a view of 8mm. The thickness of the second layer of screed is 20 – to 10mm. Therefore, the upper level of rough tie will be on average 30 – 45mm lower than the fine finish floor.
It must be remembered that the thickness of the rough layer of screed should be not less than 30mm. If the thickness is less then quickly buckle and crack would have to dismantle and make a new one. This is due to the fact that the layers of rough tie, made of Portland, and their composition is designed for installation in layers with a thickness of 30mm. It is more economical than using more expensive samoniviliruyuschie compositions for the entire thickness of the screed. If the tie needs to be done with thickness less than 30mm, it is necessary to apply samoniviliruyuschie solutions. Screed floor. Before pouring screed base should be cleaned from dust and debris and primed it a special primer for better adhesion ties and bases.