The surface shall be free from standing water.
Concrete roof waterproofing methods.
When waterproofing concrete a topical sealer is applied to the surface of the concrete.
Depending on the designed strength density and installation techniques the number of pores can vary.
Pour your chosen vapor barrier into a paint sprayer after the primer is dry and liberally spray an even coat onto the concrete roof.
These pores are interconnected within the concrete.
Work systematically from one end to the other spraying in lines.
Cementitious waterproofing is the easiest method of waterproofing in construction.
Surface preparation for waterproofing system.
Surface substrate preparation is the most important for roof waterproofing system before application.
Overlap the previous line every time you start a new one.
The sealer is impermeable provided it is applied correctly and forms a waterproof membrane around the concrete preventing moisture from entering the concrete.
The concrete surface substrate shall be clean and free from contamination such as dust oil grease organic growth and release agents etc.
A gallon covers between 50 70 square feet per coat and two coats should be used to get the best result.
Allow the vapor barrier to dry before you add a second coat.