The bathroom has to be waterproofed, so the general construction practice is thicker than the usual floor practice. And the floor of the bathroom is generally lower than the outside floor floor to prevent water from pouring outside. These two aspects determine the floor slab of the bathroom to be lower than the outside, so the design of the lowering of the slab.
Usually, when the structure construction, bathroom, kitchen and balcony floor will be lower than the surrounding floor 5cm. decorative stage, bathroom and kitchen waterproof coating, and then lay about 2cm mortar protection layer, after paving the floor tiles will also be lower than the surrounding 2cm or so, to prevent water outflow.
Extended information:
Process
Grass-roots treatment, cleanup, do the leveling layer Combined layer Detailed additional layer of waterproofing layer acrylic waterproof layer waterproof layer waterproofing test Protective layer construction Secondary waterproofing test.
1, should be kitchen, bathroom elevation review correct, pay special attention to the elevation of the floor drain is correct.
2, the floor drain, pipe root wall hole quality should be carefully checked, the wall hole should be compact and qualified, leveling layer construction pipeline root must be required to make embedded seam treatment.
3, yin and yang corner should be made into a rounded arc, and straight, smooth.
4, leveling layer construction: the base surface has voids, cracks, inequality and other defects, with cement mortar repair and smoothing. Make the base surface must be strong, flat, clean, no dust, grease, wax, mold release agent and other debris material.
5, leveling layer dry before the waterproof layer construction, construction period should be fireproof, waterproof. Construction personnel should wear soft-soled shoes.
6, waterproof layer is completed, to protect the finished product, shall not walk on people. After inspection and confirmation of pass, only after the hidden project acceptance visa, before the next process of construction.
7, waterproof construction is completed, water storage test, after 24 hours or more no leakage is considered qualified. After the completion of equipment installation, the second water test.
8, the bathroom is a drop plate treatment or caisson structure of the bathroom also need to be treated as follows:
Caisson bathroom construction method is this:
1, sinking ground first do two waterproofing a rigid and two for flexible.
A:And. Do 48 hours water closure test,
B: in the riser and bathroom caisson floor at the lowest place to open the diameter of 20 mm round hole, with 20 diameter pipe inserted into the open part of the hole 4 mm depth. The hydrophobic pipe points to the center of the bathroom caisson floor, to facilitate the installation of the bathroom caisson waterproofing device,
C: use cement mortar to make a layer of protective layer on the waterproofing coating that does not leak, the requirements of the four sides of the high, the installation of waterproofing body of the location of the lowest, after the cement mortar protective layer is dry.
2, install the upper and lower water pipes. Installation of waterproofing body, and in the body covered with pebbles to ensure that the caisson water can be discharged to the standpipe evacuation
3, fill the sand heap higher than the ground 5 centimeters below compaction.
4, paving cement to fill.
5, and then do a good job of waterproofing at the threshold of the bathroom.
6, paving floor tiles.
Baidu Encyclopedia - bathroom waterproofing construction