Polyethylene moisture-proof film for buildings is a polymer material commonly used for basic moisture-proof layers, which has excellent moisture-proof, waterproof, and anti-seepage properties.

It is made from high-density polyethylene (HDPE) or low-density polyethylene (LDPE) as raw materials through blow molding process, with a thickness usually ranging from 0.2 to 1.0mm,

It has the characteristics of good flexibility, corrosion resistance and aging resistance.

In the construction of the basic moisture-proof layer, polyethylene film is laid between the concrete cushion layer and the upper structure to form a continuous and sealed barrier layer,

Effectively prevent the capillary rise of underground water and avoid surface moisture regain. When laying, it is necessary to ensure that the film is flat and undamaged, with a lap width of ≥ 100mm,

And seal the seam with tape. In addition, the edge of the film should be flipped up to the height of the wall's moisture-proof layer to form an overall moisture-proof system. Its economic practicality

Convenient construction, widely used for basic moisture-proof treatment of residential and basement projects.