Concrete will crack. The real question "is the crack minor or major"? How is the difference defined in your contract? I would consider hairline cracks normal and minor. Any crack 1/4 inch wide would be major. Maybe even 1/8 inch wide would be a concern.
There is a product made by Rust-Oleum to repair concrete cracks. It is a two part epoxy mix. I did the epoxy paint in my garage in VA and repaired many cracks prior to painting. I mixed the epoxy and using a putty knife to put it in all the cracks. And I had many as the house is 30 years old. You let the epoxy dry 24 hours and then sand smooth. I had so many I rented a floor sander from Home Depot. Then painted the floor with the epoxy paint after cleaning and etching. You cannot find the cracks now. Even knowing where they were, I can't find them. I had one so bad I used a sledge hammer to break out the concrete and patch with concrete patch and then make smooth with the epoxy and you can't see it.
As long as the concrete was installed properly with rebar and 5 inch wire screen, minor cracks are not an issue and can be fixed before painting so you will never see them again.
__________________
Life is to short to drink cheap wine.
|