When laying plastic drainage boards, they can be overlapped with 1-2 support points on each side, or two bottom plates can

be aligned and overlapped with geotextile on top. As long as no soil enters the drainage channel of the drainage board, it can

ensure smooth drainage.

1. Clean up the garbage and level the cement on the laying site to make sure there are no obvious bumps or depressions.

2. Roof greening and outdoor garage roof greening can be equipped with porous permeable pipes, which can concentrate the water

discharged from the drainage board and discharge it to nearby sewage pipes or nearby sewers.

3. For waterproofing of basement walls, drainage boards can be laid on the main wall of the building, with a circular protruding platform

facing the main wall. An additional layer of single wall can be built outside the drainage board to protect it, allowing the space for the

seepage board outside the wall to flow directly into the blind ditch until it reaches the collection pit.

4. When laying drainage boards in any area, attention must be paid to not allowing soil, cement, yellow sand and other garbage to enter

the front space of the drainage board, ensuring that the space of the drainage board is unobstructed.

5. When laying drainage boards, protective measures should be taken as much as possible. When laying drainage boards on the surface

or in outdoor garages, backfilling should be done as soon as possible to prevent strong winds from affecting the quality of the laying; The

basement and interior wall waterproofing should be protected as soon as possible to prevent damage to the drainage board.