Concrete Roof Waterproofing Methods

The sealer is impermeable provided it is applied correctly and forms a waterproof membrane around the concrete preventing moisture from entering the concrete. Pour your chosen vapor barrier into a paint sprayer after the primer is dry and liberally spray an even coat onto the concrete roof. Allow the vapor barrier to dry before you add a second coat.

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Work systematically from one end to the other spraying in lines.

Concrete roof waterproofing methods.

The surface shall be free from standing water. The concrete surface substrate shall be clean and free from contamination such as dust oil grease organic growth and release agents etc. These pores are interconnected within the concrete. Depending on the designed strength density and installation techniques the number of pores can vary.

Topical sealers can be made from acrylic epoxy and polyurethane based materials. 12 waterproofing of reinforced concrete flat roof 12 1 background most roofs in singapore are constructed using reinforced concrete which is known to have pores or capillary tracts. Cementitious waterproofing is the easiest method of waterproofing in construction. Overlap the previous line every time you start a new one.

A gallon covers between 50 70 square feet per coat and two coats should be used to get the best result. Surface substrate preparation is the most important for roof waterproofing system before application. Surface preparation for waterproofing system. Recommended for use on different surfaces including roofs polyurethane foam wood and concrete the jetcoat cool king elastomeric acrylic coating provides a fortified coating that keeps promises 5 years protection for your concrete surface.

When waterproofing concrete a topical sealer is applied to the surface of the concrete.

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