How to make the roof waterproof

Construction steps of roof waterproofing:

1. First, find out the cause of water leakage. It is generally estimated that it is still subsidence. The roof was cast-in-place, and the settlement of the house cracked it, and the rain entered the house.

2, joint repair, the top floor leakage is mostly cracks, gaps need to be filled with joint sealant, and then proceed to the next step after drying. (If the joint is less than 1MM, no leakage sealant is needed. )

3. Brush it twice with water-based waterproof coating or transparent waterproof material with wall permeability, which is comprehensive. If the gap is polished, the broadband should reach more than 20 cm. This ensures adhesion. Waterproof coating is permeable and bonded, with good elasticity and long service life.

Extended data:

Experts say: if a house leaks, we must first find out the cause of the leakage. Generally speaking, the following problems are common in roof leakage: cracks caused by quality problems of waterproof layer, cracks caused by aging of waterproof layer, artificial damage of waterproof layer, or structural cracks; The second step is to choose the treatment method. Common treatment methods include: repairing the original waterproof layer, integral waterproofing, etc. The third step is to handle it carefully to avoid future troubles, and remind the owner to choose brand waterproof materials. The construction must be meticulous and comprehensive, and there must be no luck to prevent water leakage again.

In view of the common roof leakage, Leibangshi suggests that you do the following specific steps:

First of all, find the water leak.

If the crack at the water leakage point is not too long or too deep, the length is not more than 5-6cm, and the depth is not more than 2-3cm, it can be filled with Rebonds nozzle grouting material. Leibangshi 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. It has the characteristics of good self-flow, high strength, no shrinkage and fast curing, and can quickly fill gaps and solve various anchoring problems such as nozzle and machine foot. It is the latest patented product developed by Leibangshi Company.

Secondly, brush flexible waterproof slurry.

After the nozzle grouting material is filled, apply flexible waterproof slurry. Leibangshi flexible waterproof slurry has the characteristics of "combining rigidity with flexibility", which not only has the extensibility and waterproofing of polymer coating, but also has the advantages of high strength, good water resistance and easy adhesion with wet base. But also has good flexibility, and can resist slight vibration and certain displacement of the building structure;

Thirdly, non-woven fabrics are used to reduce the influence of structural movement on the waterproof layer.

Add a piece of non-woven fabric soaked with flexible waterproof slurry at the crack.

Fourth, make a protective layer of cement mortar.

References:

Baidu Encyclopedia: Waterproof