How is the old roof waterproof? How is the old house waterproof?

1. If the roof is not waterproof, just peel off the leaking part 2~75px deep and clean it up, and you can water it with asphalt. Now you have a finished asphalt coating. If it is treated in sunny days, it will basically not leak. If there is a waterproof layer, it will be more troublesome. It is necessary to remove the surrounding waterproofing and re-waterproof the roof. When doing this, pay attention to the strengthening layer at the joint with the original waterproof.

2. When the roof of some buildings with red tiles leaks, the effect of leakage prevention is the same as long as the tiles are replaced after removing grass, moss or dust. For a flat roof, if there are obvious cracks in the roof, tenon the cracks into a "V" or "U" shape with tools, fill them with caulking ointment, and then wrap them with waterproof coiled material above and around the cracks. If you want to strengthen the waterproof and leak-proof effect of the roof, you can also lay another layer of waterproof coiled material.

3. The roof waterproofing methods are mostly cleaning the roof, caulking, sealing, and finding equal maintenance methods with mortar. Roofing waterproof methods include: coiled material waterproof, rigid waterproof, flexible waterproof, coating waterproof and so on. It's better to block the king. For the place with water seepage, the dry powder of plugging king can be directly put into the groove, and the groove is slightly dug, then compacted, polished and watered for maintenance.