"We recently moved into a house, which has outbuildings with a unsealed concrete flat roof. Due to persistent dripping we couldn't store anything but we've put this product down and it's totally stopped any water on the ceiling."
"I have used this product many times before and it has in most instances performed well. I would say if you need to waterproof a flat roof that does not pool and the product can be applied in the dry, then Flexacryl does a fine job. However I have found that the product can not be applied in damp conditions and it has a very short life span when applied to area which regularly pool water."