I putting celfort 300 which is good for underslab and good for 30psi. I was installing it on the inside of the foundation walls today and put one on the ground and tried walking on it. seems to creek and crack.. I'm trying to figure out how people walk and wheel barel concrete on this stuff without breaking it. my gravel is not perfectly flat because it's 3/4 clear stone which can't be packed. don't know if this will be an issue?
No announcement yet.
pouring concrete on sm board(celfort 300)