The notice pointed out that the construction of affordable housing should be changed from "is there" to "is it good or not". The full text of the notice is 2210 words, and the requirements on waterproofing reach 306 words. Specific requirements are as follows:
(1) Waterproofing of the outdoor water-facing surface.
Rainwater pipes, pipe well pipes and parapets and other flooding areas should be provided with additional waterproof layers or multiple waterproof treatments.
The inward drainage gradient of the parapet roof should not be less than 5%, and the lower end of the inner side of the roof should be treated with dripping water.
The air tightness and water tightness of the external doors and windows and their joints shall meet the standard requirements.
The outer window sill should be provided with drainage structure measures such as roof pressure, water distribution board and drip line, and the drainage slope should not be less than 5%. The main structure of the basement facing the water should be waterproof concrete, and the thickness should not be less than 250mm.
(2) There is no leakage in the indoor room.
The ceiling of the bathroom should be equipped with a moisture-proof layer or a moisture-proof material. The height of the waterproof layer on the wall of the shower area should not be less than 2000mm, and not lower than the height of the shower nozzle, and the height of the other wall waterproof layers should not be less than 250mm. The pipes are tightly connected, easy to maintain and replace, and the connection parts are not leaking or leaking. The waterproof casing passing through the floor should be 5mm above the ground. Sanitary ware, kitchen sink and countertops, walls, floors and other contact parts should be sealed and waterproof.
It is worth noting that it stipulates that the height of the waterproof layer of the wall in the shower area is ≥2000mm, which is higher than the second paragraph of Article 5.3.3 in JGJ298-2013 "Technical Specifications for Residential Indoor Waterproof Engineering". When the bathroom has a non-enclosed bath When installing, the height of the waterproof layer of the shower and its adjacent walls shall not be less than 1.8m.