Seven common problems of waterproof coating construction

Resolution:

Specific phenomenon: the coating does not stick to the base layer or blisters or insufficient adhesion

Prevention:

1.

2.

3.

4.

5.

2.

Specific phenomenon: after the coating is formed into a film, the thickness is uneven

Prevention:

1.

2.

3.

Three, pimple

Specific phenomenon: there are lumps in the coating, and after the coating film is applied, the coating film contains small particles

Prevention:

1.

2.

3.

4.

　　Four, paint layering

　　Specific phenomenon: After the coating film is formed into a film, the coating film is delamination, or there is blistering between the coating films

　　Prevention:

　　1.
In the process of dividing and forming the film, the cleaning is not in place before each construction

　　2.
The waterproof membrane is not completely dry in the previous time

　　Five, the drying speed is slow

　　Specific reason: because the single-component acrylic paint is formed into a film through the volatilization of water, high humidity and low temperature environment hinder the water in the paint

Volatile, so the drying speed is relatively slow

　　Prevention:

　　1.
Strengthening indoor ventilation conditions can be more conducive to the use of water

　　2.
The method of thin coating and multilateral coating is more conducive to the volatilization of water.
During construction, you must wait until the coating film is dry each time.

Paint next time

　　3.
Use cement-based paint for construction, or use other waterproof paint

　　6.
After the waterproof construction is completed, the coating film is cracked

　　specific reason:

　　1.
The grassroots is not cleaned and there is a lot of floating soil

　　2.
If the coating is too thick at one time, the coating film will be cracked due to uneven moisture volatilization during the drying process of the coating film.

　　3.
When construction is carried out outdoors, there are strong winds and other weather in the external conditions, which may easily lead to cracking

　　Prevention:

　　1.
Remove the floating soil from the base layer before construction, and treat the base layer with a paint primer, and take the method of multiple times of thin coating

　　2.
Avoid outdoor construction in windy weather

　　Seven, the phenomenon of tofu residue caused by waterproof coating

　　The specific reason: the amount of water added to the paint is too large, which leads to the separation of the liquid material and the powder material of the paint, and the powder material sinks, like tofu

　　Prevention measures: Control the amount of water added, and perform the proportioning strictly according to the product instructions.
(Source: Global Coatings Network) (For more information, please log in: Global Coatings Network http:// )