During the use of building waterproof coatings, Panjin waterproofing membranes will cause various qualitative changes due to improper storage methods or incorrect construction methods. How to deal with blistering, different shades of color, cracking, etc.? Several common problems in the construction of waterproof coatings!

1. The grassroots did not handle it well

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

Prevention:

1. The grassroots must be cleaned up;

2, check the hardness of the base layer, no sanding, peeling, or looseness;

3, water-soluble paint must not have clear water;

4. The base layer of solvent-based paint must be dry;

5. Primer must be used for the first coating.

2. Uneven thickness

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

Prevention:

1. The base must be level and there must be no holes

2, it must be divided into several times to survive when painting

3, the consistency of the paint is adjusted from time to time

Three, pimple

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

Prevention:

1, do not use the paint that has expired or used after mixing

2. The two-component material is manually stirred or mechanically stirred without being in place, pay attention to check the mixing material

3. Use an unclean bucket for mixing, pay attention to cleaning the mixing bucket

4. The ratio is incorrect, it should be ratioed correctly

Four, paint layering

Specific phenomenon: The coating film is stratified after the coating film is formed, or there is blistering between the coating films

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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

5. Drying speed is slow

The specific reason: because the one-component acrylic paint is formed into a film through the volatilization of water, the high humidity and low temperature environment hinder the volatilization of the water in the paint, so the drying speed is relatively slow

Prevention:

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

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

3, switch to cement-based paint for construction, or use other waterproof paint

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

specific reason:

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

2. Brushing is too thick at one time, resulting in uneven moisture volatilization during the drying process of the coating film, causing the coating film to crack

3. Construction outdoors, the external conditions have strong winds and other weather, which may easily lead to cracking

Prevention:

1. Remove the floating soil from the base layer before construction, use the paint primer to treat the base layer, 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

Specific reasons: excessive water added to the paint resulted in separation of the liquid material and the powder material of the paint, and the powder material sank, like bean curd dregs

Prevention and control measures: control the amount of water added, and strictly follow the product instructions for proportioning