Roof greening, garage roof greening and drainage--the best drainage board for drainage
This kind of drainage board has a void ratio of more than 80%, and has excellent compressive strength, which is an important type of drainage board.
drainage board construction attention
1. When used in flower ponds, flower troughs and flower beds in gardens, water storage plates and filter geotextiles are directly used instead of conventional materials (such as filter layers composed of ceramsite, pebbles or shells).
2. When used for hard interface greening such as new and old roofs or roofs of underground projects, before laying drainage boards, first clean up the debris on site, set up a waterproof layer according to the requirements of the design drawings, and then use cement mortar to lift the slope so that there is no obvious surface on the surface. At the concave and convex places, the storage and drainage boards are arranged in an orderly manner, and there is no need to set up additional blind drainage ditch within the laying area.
3. When used as a building sandwich panel, the drainage board is laid on the roof concrete board, and a single wall is built outside the drainage board, or it is protected by concrete, so that the underground seepage water flows into the blind ditch through the overhead space of the drainage board to collect water. pit.
4. The drainage board is spliced around each other, and the gap during laying is used as the lower drainage channel, and the geotextile filter and moisturizing layer on it should also be overlapped when laying.
5. After the drainage board is laid, the next process can be carried out, and the filter geotextile and matrix layer can be laid as soon as possible to prevent soil, cement and yellow sand from clogging the channel or entering the water storage, water tank and drainage channel of the drainage board. In order to ensure that the drainage board can fully play its role, an operation board can be placed on the filter geotextile to facilitate the greening construction.
