I'm looking for a paint for a basement concrete floor that has a vapor barrier under half and no barrier under the other half. The basement is dry, but close to the water table, so water will puddle in a couple of low areas (+/- 1/4" deep) from heavy rains a few times a year (mostly in the area that has the vapor barrier underneath). There's no efflorescence so far and it drys well afterwards. Is this paint breathable enough to not bubble up and not cause problems by preventing vapor coming up through the slab? SAMPLE - ECOS Exterior Porch and Floor Paint, Untinted Paints & Primers

Question

I'm looking for a paint for a basement concrete floor that has a vapor barrier under half and no barrier under the other half. The basement is dry, but close to the water table, so water will puddle in a couple of low areas (+/- 1/4" deep) from heavy rains a few times a year (mostly in the area that has the vapor barrier underneath). There's no efflorescence so far and it drys well afterwards. Is this paint breathable enough to not bubble up and not cause problems by preventing vapor coming up through the slab? SAMPLE - ECOS Exterior Porch and Floor Paint, Untinted Paints & Primers

Status: Open Feb 06, 2021 - 10:11 AM

1answer

Answer

Feb 08, 2021 - 07:54 AM

According to ECOS: The paint is sufficiently breathable to allow for typical moisture levels to evaporate from the floor surface.However, there appears to be (at least the potential for) much more moisture than this anticipated.This excess moisture can cause the paint (any paint) to bubble and peel. Whether or not it does it entirely dependent on the local conditions - which are unique.