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Discussion Starter · #1 ·
looking for advice on my new project

500 sq ft basement with a concrete floor with some hairline cracks, the worst crack is 1/8 inch wide apx 7 ft long. The floor is 30 years old. Some floor leveling is required.

i would like to fill the crack with concrete repair, then floor leveling were required, then flexbond & tile. make sense?

my question is : do i need to use a crack isolating membrane like redgard?

thanks for feed back..
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