11 for the detailed waterproof practice of floor drain, a groove with a depth of 10mm and a width of 20mm shall be reserved between the pipe root of floor drain and the concrete (cement mortar), and the groove shall be filled with sealing paste; the drainage slope within 50mm from the edge of floor drain is 5%.
5.
6 waterproofing construction (1) waterproofing (1) polyurethane waterproofing coating shall be rubbed with rubber scraper, brush at the pipe root and corner; JS, acrylic waterproof coating shall be painted with brush or roller brush; cement based permeable crystalline waterproof coating shall be brushed with stiff nylon brush; the interface permeable waterproof liquid should be sprayed with spray sprayer.
The leveling layer shall be solid without hollowing, and the surface shall be troweled and calendered.
When the waterproof layer is constructed for the last time, when the coating film is not fully cured , a small amount of clean coarse sand can be sprinkled on its surface to enhance the bonding between the waterproof layer and the protective layer; The cement slurry mixed with construction glue can also be used to roughen the surface of the waterproof layer before making the protective layer…
3 moisture content requirements moisture content polyurethane waterproof coating construction requires that the waterproof base course is dry, Polymer cement (JS) polymer emulsion (acrylic acid) and other waterproof coatings can be applied on the wet base course, but there shall be no water in the base course.
The protective layer shall be made of 20mm thick 1:3 cement mortar.
7 waterproof construction (two) waterproof.
The next brushing shall be carried out after the previous coating is cured, subject to the non stick by hand.
Toilet base course requirements: the waterproof base course of toilet shall be leveled with 1:2.5 or 1:3 cement mortar, with a thickness of 20mm.
When polymer waterproof coating and polymer cement waterproof coating are used, the thickness of waterproof layer shall not be less than 1.2mm; the thickness of cement-based permeable crystalline waterproof film shall not be less than 0.8mm or the material control shall not be less than 0.8kg / ㎡; the thickness of interface permeable waterproof liquid and flexible waterproof coating shall not be less than 0.8mm; polyethylene polypropylene fiber waterproof coating When the water coiled material is bonded with polymer cement, the thickness shall not be less than 1.8mm.
（2） The waterproof coating shall be brushed in several times, and each time shall not be too thick.
After the water storage test is qualified, the waterproof protective layer shall be constructed immediately.
1.
The toilet with shower facilities shall be separated from the wall, and the height of waterproof layer shall not be less than 1.8m.
4 the slope of the base course is required, and the construction of the waterproof leveling layer shall be carried out after the construction of the leveling layer.
20mm wide and 10mm deep grooves shall be reserved between the pipe root and the leveling layer.
If you don’t pay attention to the detailed practices, many common quality problems will occur, especially the key points such as indoor waterproof.
10 waterproof method for pipes passing through the floor: after the riser is positioned, the gap around the floor shall be blocked with 1:3 cement mortar; When the joint is greater than 20mm, fine aggregate concrete shall be used to block it tightly; A groove with a depth of 10mm and a width of 20mm shall be reserved between the pipe root and the concrete (cement mortar), and the groove shall be filled with sealing paste.
9 height of waterproof layer at the connection between the ground and the wall, the waterproof layer shall return more than 300mm to the wall.
The drainage slope from the ground to the floor drain shall be 2%; the drainage slope within 50mm from the edge of the floor drain shall be 5%; the ground of the large area public toilet shall be divided into zones, each zone shall be provided with a floor drain, and the drainage slope in the area shall be 2%, The straight-line length of slope shall not be greater than 3m; The lobby floor of public toilet and bathroom may not be provided with slope.
2.
The 13 detailed practices listed in this paper must be done in place during construction.
There are many processes involved in toilet construction.
8 waterproof construction (III) waterproof （3） The thickness of waterproof layer shall meet the design requirements.
Pipe root and corner treatment pipe root, corner pipe root and corner shall be plastered with arc with a radius of 10mm.
The direction of the next brushing shall be perpendicular to the direction of the previous one, and the number of brushing times shall meet the coating thickness required by the design.
12 for the waterproof practice of squatting pan, the pipe root of squatting pan and the concrete (cement mortar) shall be provided with a groove with a depth of 10mm and a width of 20mm.
The groove shall be filled with sealing paste; sealing paste shall be added at the connection between the bottom of the squatting pan and the riser.13 quality acceptance and finished product protection.
The waterproof leveling layer of the toilet at the door shall extend 250 ~ 300mm outside the toilet door to prevent the water in the toilet from leaking through the floor outside the toilet.
