Paul repair on the loggia will not take much time, and it is not very expensive and the new floor will significantly insulate the room and last a long time.
Before starting work, it is necessary to remove the old coating, if there are cracks or holes at the base, they must be recorded with a solution. After the solution is dry, you need to treat the entire surface with a primer so that dampness and mold do not form. Different material is used to warm the floor on the loggia: expanded clay, glass wool, polystyrene foam. It is perfectly cut, does not crumble, is not subject to destruction, withstands large loads and temperature extremes. Differs in durability, high resistance to moisture, excellent qualities of noise — and thermal insulation. But if you bought an apartment on the PNZSSTR, then you can be sure that it will be in perfect order and not need to be repaired and warming.
Before direct insulation of the floor, it is necessary to make lags or formwork, so that the insulation holds tightly and does not shift to the side. The formwork is covered with insulation on top. If the floors have significant unevenness, they need to be leveled with a cement screed.
A special glue is used to lay polystyrene foam, which is diluted and applied to the floor surface and on a sheet of polystyrene foam. For the strength of the clutch, dowels and nails are used, which attach the plate in the corners and in the middle. A reinforcing mesh is laid on top and a leveling layer from the mixture is applied. Typically, two layers are enough, before applying the second layer, the first should completely dry. The total thickness of the screed should be about 5cm. Next, any facing material is mounted.