1. Apply the first coat of waterproofing material. Before starting, make sure the surface is clean, dry, and free from any debris. The coating should be evenly applied without missing any areas. It must bond firmly to the base layer, with no cracks, bubbles, or peeling. Ensure the brush height is consistent and the thickness meets the manufacturer's specifications.
2. Apply the second coat of waterproofing after the first coat has fully dried. There should be a recommended time interval between the two coats. If the drying time is too short, the waterproofing performance may be significantly reduced. Always follow the product instructions for drying times.
3. Install a protective layer over the waterproof coating to prevent damage during subsequent construction. The protective layer must completely cover the waterproof layer, ensuring there are no gaps or leaks. It should also be firmly bonded to the base, with no cracks, bubbles, or detachment.
4. Conduct a water retention test. Fill the area with water to a minimum depth of 2 cm at the highest point, and let it sit for at least 24 hours. If no leakage occurs, the test is considered successful. If there is any leakage, the process must be repeated and not ignored.
Key steps include: base preparation, cleaning, leveling layer, joint treatment, detail reinforcement, acrylic waterproof layer, water storage test, protective layer application, and a second water storage test.
1. Verify the elevation of the kitchen and bathroom, especially the correct placement of the floor drain. This is crucial to ensure proper drainage and prevent water accumulation.
2. Inspect the quality of the floor drain and the surrounding walls. Make sure the wall holes are properly filled and compacted. During the screed work, the pipe roots must be sealed according to the required standards.
3. Shape the internal and external corners into smooth circular arcs, ensuring they are even and flat.
4. Perform the screed work on a stable, clean base. Repair any voids, cracks, or uneven areas using cement mortar. The base must be solid, smooth, and free from dust, oil, wax, or mold release agents.
5. Once the leveling layer is dry, proceed with the waterproofing. Keep the area safe from fire hazards and use soft-soled shoes to avoid damaging the coating during installation.
6. After the waterproofing is completed, implement protection measures to prevent foot traffic. Only after passing inspection and receiving confirmation of quality can the next construction phase begin.
7. Conduct a water storage test after the waterproofing is done. If no leakage is observed after 24 hours or more, it is considered qualified. A second water storage test should be performed after the equipment is installed to ensure long-term effectiveness.
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