Is it possible to lay a plastic film between the roof slab and concrete for waterproofing purposes?
It is recommended that the precast slab be first poured with a diameter of 4mm or more, 200 spacing, two-way C20 fine stone concrete, 40mm thick, and then do waterproof two road, a little bit better insulation layer, and then make surface layer protection.
1, no.;2, the precast plate joints are very easy to crack, plastic film durability is not good, and very easy to pierce, once it rains, basically can not get waterproof effect;
Sure。 In the construction, the film can not be worn out, the effect is good, and the waterproof life is very long. I've done this before, and the film was good until the concrete was removed from the house. "It's been used for ten years.".
