Surface preparation
DSP, plywood can be used as an insulating layer. If the parquet is laid on the lags, then the plywood is put in two layers. If the flooring is made on concrete and cement base, then it must be dried and cleaned of dust and garbage and primed. You can use bitumen and kerosene or gasoline as a primer. Bitumen needs to be heated and melted until it stops foaming. After cooling bitumen, add kerosene or gasoline and mix. The primer is applied using a flywheel.