According to the traditional paving method, when installing laminate flooring and solid wood composite flooring, a floor mat with a thickness of about 2mm is laid under the floor, and the joints are sealed with adhesive tape, which can play a certain moisture-proof role. However, under wet or geothermal conditions, under the action of moisture and geothermal temperature (especially geothermal temperature exceeding the standard), the adhesive tape is easy to degum, resulting in air permeability at the joints, resulting in bulging, edge warping, noise or color difference of the floor.

Plastic film moisture-proof

According to the Code for Paving, Acceptance and Use of Wood Flooring, a layer of plastic film should be laid under the floor mat, and the joints should be overlapped by 20mm and sealed with adhesive tape. Under geothermal conditions, even if the adhesive tape is degummed, it is difficult for moisture to affect the floor, which can effectively prevent the harm of moisture to the floor. Therefore, it is very necessary to lay plastic film in geothermal environment.

Floor mats are not recommended.

In addition, some people overlap the original pad by 20mm at the joint and seal it with adhesive tape. Although it can achieve a similar moisture-proof effect, the thickness of the floor mat is about 2mm, and there will be a height difference at the overlap, which is easy to produce noise after the floor is installed.