Đọc khoảng 5 phút
Floor lacks waterproofing or has gaps at pipe necks, wall bases and grout joints.
Warning signs
- Yellowed, dripping ceiling on the lower floor after water use.
- Adjacent room wall bases turn damp and paint peels.
- Floor grout stained and cracked, tiles debonded or sounding hollow.
- Persistent damp and mold smell.
Consequences if left untreated
- Damaged ceilings, walls and furniture on the floor below, with a high risk of disputes between units.
- Tiles debond and must be demolished and redone.
- Persistent odor and mold.
Causes thường gặp
- Incorrect waterproofing. Thin coats, missing layers, wall bases skipped.
- Untreated pipe penetrations through slabs. Gaps around pipes are the most common leak path.
- Grout joints letting water through. Cement grout is porous and cracks over time.
- Leaking pipes embedded in slabs and walls. Loose joints, water leaks even when not in use.
Cách xử lý
- Locate the leak. Check the water meter while no water is in use, run a 24-hour flood test on the slab.
- Remove damaged finish layers. For severe leaks, remove tiles and old screed, chip down to clean concrete.
- Treat pipe collars, wall bases, corners. Seal pipe collars with non-shrink mortar, reinforce with mesh, round the corners.
- Waterproofing and water testing. Apply at least 2 coats of OCTOPUS SEAL 102, turn up walls 30 cm, water-test for 24 to 48 hours.
- Re-tile. Suitable tile adhesive and water-resistant grout.
Prevention
- Waterproof the floor and wall bases, water testing is mandatory.
- Treat pipe collars, floor drains and bathtub bases separately.
- Use water-resistant grout and repair cracked grout early.
Suitable products
OCTOPUS E868
Details
