As polyurea technology has been more and more widely used in many different fields, people also often met many problems during the application, among which the most troublesome may be the problem of "bulge".

Spraying polyurea can form a continuous jointless protective layer, but in the continuous jointless coating surface got a bulge is really a headache. How to deal with such a thorny problem?

How does the bulge form?

To solve the problem, we need to find what reason cause the bulge first. There are several main reasons for polyurea coating bulge:
1. The primer didn’t dry totally.
2. there is water or moisture inside, maybe sweat of the workers.
3. Uneven mixing of materials, bulge caused by excessive A or B component.

How can we identify which reason caused the bulge?

We usually cut it and look at the back. And we see the back of the polyurea sheet we cuted, if it was caused by reason 1 and 2, the material mixing is normal, so there will be no stickiness on the polyurea surface at the bulge position. If the polyurea surface is sticky, it is generally reason 3 that the material is not well mixed. If it because of the primer didn’t totally dry before spray, you might smell the odor of solvent. By finding the reason, we can easily find the way to solve the trouble.

How to fix the bulge？

First after we find the reason, we should solve and pay attend to avoid it happen again. And then we cut the bulge, and grind the repairing area, which should be bigger than we applied repaired material, then we applied primer on the surface, the spray or use hand applied polyurea for repairing.

If you encounter any problems in the project site, you can also consult our technical staff to help you analyze and solve it!