First, find the leak.
When we find the roof leaking, we must find the leaking point. Generally, the main reason is roof seepage, such as concrete cracks and rust holes in metal roofs. You can determine it according to the water quality, black spots or mildew spots in the house. At the same time, we can see whether the original waterproof layer is aging. If there are bubbles in the original SBS waterproof coiled material on the roof, it proves that there is water at the bottom of the waterproof layer, so it leaks.
If you really can't find it, find a helper to water the roof in different areas. You can water it from the place where you have doubts, so it is easier to find the leaking point. If the leak is small or the crack is short, we can take partial repair. If there is a big leak and there are many cracks in the roof, we can take the whole house maintenance. According to your own needs, you can use flexible acrylic tape, polyurethane sealant or linoleum and other waterproof materials.
Second, remediation measures
Tools for cleaning the roof surface at least include scraper, broom and dustpan. Everyone should carefully remove any debris that may affect the waterproof effect. We can enlarge the cracks in concrete and then use tools to clean up the silt in the cracks.
We can use polyurethane or epoxy resin to fill cracks, or waterproof the whole roof. Note: The order is clear, starting from the roof far away from the exit. Be sure to check carefully after the homework is completed, especially in corners, cracks in walls and places where water is easy to accumulate.
If the crack area of the water leakage point is not large, grouting material can be used to introduce and fill it. Nozzle grouting material is a cement-based one-component powder grouting material made of high-strength minerals as aggregate, cement as binder and additives with high fluidity, micro-expansion and anti-segregation. It can be used after adding water and stirring during construction. If the leakage area is large and the situation is serious, it must be waterproof again.
Brush twice with water-based waterproof coating or transparent waterproof material, comprehensive. If the gap is an optical film, the broadband should reach more than 20 cm. This ensures adhesion. Waterproof coating is permeable and bonded, with good elasticity and long service life. Rain shelter needs 12 hours. So it is best to choose sunny construction. If the roofing material is special and rubber is not suitable for waterproof coating, you can choose other waterproof materials.
Bian Xiao concluded: Bian Xiao here briefly introduces the knowledge about how to do roof leakage of old houses, hoping to help everyone. If you need to know more exciting content, please continue to pay attention to Qijia. com。