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Knowledge of waterproof and leak repair
From:2020.08.04 Share:
Basic knowledge of waterproofing and plugging

1、 Characteristics of water

Water is pervasive. It gradually penetrates into the interior of the building by means of wind pressure, convection, impact, adhesion, capillary and other forces

The process is not easy to detect from the surface. In other words, in order to find out the cause of water leakage, it is necessary to analyze and judge the internal organs in order to find the right medicine.

2、 Pressure change of water and steam

Once the water penetrates into the building, in the limited space, when the sun is exposed to the sun, the heat energy will be generated, and the water vapor will be formed

A large amount of pressure can damage the original waterproof layer, even the surface decoration and decorative materials (such as paint peeling, black wallpaper, tile drum)

In other words, a unit of water, if all into steam, in the limited space inside the building, the

It creates 1240 times the pressure, and the destructiveness of the pressure is terrible. So we often find waterproof glue in water containing foam water.

On the mud, it soon began to bulge and peel off. )

3、 Grassroots requirements

The interface connected with waterproof material must be free from swelling, sand, honeycomb, wood, paper scraps, sludge, small stones, and can not be made loose

On the table body, the reason is poor adhesion, coupled with solar ultraviolet damage, the building itself heat up and cold contraction, as well as water vapor pressure

Force damage, easy to cause waterproof layer aging, failure.

4、 Positive waterproofing is better than negative waterproofing

If the roof waterproof, do directly on the roof surface, wall waterproof should be done directly in the outer wall, water tank leakage directly in the inner layer of the water tank, water pressure

The force will spread to other places, and the dead corner of the house is not easy to construct. The term "superior" here is relative rather than absolute

。 With the development of science and technology, waterproof materials for construction on the back surface and high and low pressure injection of synthetic resin produce expansion

Crystal can also be waterproof, but not all occasions can be successful construction, so it is necessary to adopt positive waterproof construction.

5、 The judgment standard of choosing waterproof materials

1. Continuity with the foundation.

2. Water permeability.

3. Compressive strength and tear strength.

4. Weatherability and aging resistance.

5. Adhesion of surface finishing materials