ᐅ Crack in two-component floor coating in garage

Created on: 3 May 2024 19:51
H
hans123
Hello
A few weeks ago, I had a professional apply a two-component floor coating in my garage.
Unfortunately, a crack has appeared in the coating.
The crack was already visible and present in the screed (about 15cm thick (6 inches)) before. According to the coating specialist’s statement at the inspection appointment, a crack is not a problem; it would simply be filled, and once the coating is applied, it would no longer be visible. The screed had dried for about one year.

Now the crack has appeared again, and I am unsure how to proceed.

I have already informed the company.

How likely is it that saltwater will penetrate the crack and cause the coating (3 or 4 layers) to peel off again?

Regards, Hans
H
hans123
6 May 2024 10:07
Sorry, screed is, for me, the top layer of the floor made of concrete or cement, etc.

The crack is clearly visible in the morning when it is cool, and in the evening when it is hot, you can hardly see it anymore. The concrete underneath expands and contracts that much.
H
hanghaus2023
6 May 2024 10:16
How exactly was the foundation slab constructed? If the reinforcing steel is correctly positioned inside, there won’t be any movement in a crack visible to the naked eye. Nowadays, every small construction progress is usually photographed. Try putting a plaster mark on it—that way, any movement will be visible. This can also be well documented.
A
Alfredlima
15 May 2024 11:08
hans123 schrieb:

Sorry, in my understanding, screed refers to the top layer of a floor made of concrete or cement, etc.

Just for your information, by the way:
  • Concrete is a composite material composed of cement, sand, gravel, and water, used for load-bearing structures.
  • Screed is a layer of cement mortar applied on the floor as a base for floor coverings.
  • Cement is the binding agent that serves as the main component in concrete and is also used separately in various construction applications.

And in general, we are all still eagerly waiting for pictures!