Concrete Moisture
Concrete Moisture
(OP)
Does anybody know of any tests to determine if a slab is dry enough to apply an isolation membrane and tiles?
I have a 7" thick slab, outdoors, on top of an old concrete slab, 8' X 12'. I am in dry, sunny, San Jose CA. Will 4 weeks be enough time for it to dry out? Does it matter if there is residual moisture, as long as the isolation membrane is well adhered?
Thanks -Henry
I have a 7" thick slab, outdoors, on top of an old concrete slab, 8' X 12'. I am in dry, sunny, San Jose CA. Will 4 weeks be enough time for it to dry out? Does it matter if there is residual moisture, as long as the isolation membrane is well adhered?
Thanks -Henry





RE: Concrete Moisture
Refer to the manufacturers recommendations regarding age of the new slab for membrane application.
Make sure slab top is clean and free of deleterious materials.
Twenty-eight days is the magical number for concrete to initially cure-out in regards to its design strength.
This dependant on proper placement, consolidation, finishing, and soil condition.
BRIAN
RE: Concrete Moisture