What is the plastic film under the wooden floor?
Prevent damp, moistureproof, lest floor because water vapour is backward seep, make wooden floor deformation.
It's called the ground mat, and it can play the role of separating the tide. If there is no floor mat, the floor will rub against the cement floor and make a noise. It's the biggest headache. Also, it can also play a role in leveling the ground. Is an indispensable program.
It's called damp proof cotton. It has thick and thin film with film and without film. You need to use a thick film to use, and the interface to connect
