The nuances of laying mineral wool Before any work on thermal insulation, the base must be prepared. For this, the surface is checked for cleanliness and the presence of foreign objects. The material must be dry. Cracks and chips are filled with a cement-sand mixture or alabaster. If there is damage between the panels, then they are filled with polyurethane foam or the same solution. Before insulating the balcony floor with mineral wool, it is necessary to lay waterproofing, for this, roofing material is usually used. It is rolled along the length of the room. An overlap of 200 mm should be provided between the sheets. The edges of the material should fit into the walls. The joints are additionally glued with tape. Next, lags are installed. For this, wooden slats are used, which are pre-impregnated with an antifungal composition. The material is additionally dried within 2 days. The size and thickness of the slats may vary depending on the level to which the floor needs to be raised. The timber can be fastened to a concrete base or using straight hangers. In the first case, we are talking about a technology that provides for the need to use pads, with the help of them you can level the horizontal level. The bars can be fixed to corners or hangers that are mounted on the base of the floor. Insulation laying Floor insulation on the balcony with mineral wool is carried out on the crate. The sheets of thermal insulation are cut, while the markings need to be corrected. About 70 mm is added to the parameter so that the edges of the canvases fit snugly against the joists. The material is inserted into the space between the slats. The sections of the frames are filled with insulation. The gaps are closed with polyurethane foam. When choosing stone or mineral wool, it is better to prefer cloths with a thickness of 50 mm. If you want to form a thicker layer, then one canvas should be superimposed on another. But mineral wool should not be strongly pressed down, since the air in it acts as a heat insulator. If it is forced out of space, the thermal insulation qualities of the material will decrease. At the end of the work, the structure is closed with plastic wrap or other material that does not allow moisture to pass through. The canvases are fixed to the wood, and a furniture stapler should be used. At the next stage, you can start laying massive boards, YUSB, chipboard or plywood sheets. Additional nuances of using penoplex Penoplex floor insulation on the balcony allows you to achieve good results. For work, the slab should be cleaned of old finishing materials, dust and dirt. The substructure is checked for integrity, especially where the material joins the wall. If the base has cracks or chips, then they are covered with plaster. After the solution has solidified, the surface must be primed in several layers.