Concrete Roof Waterproofing Methods

Surface preparation for waterproofing system. Depending on the designed strength density and installation techniques the number of pores can vary. Surface substrate preparation is the most important for roof waterproofing system before application.

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Allow the vapor barrier to dry before you add a second coat.

Concrete roof waterproofing methods.

Cementitious waterproofing is the easiest method of waterproofing in construction. When waterproofing concrete a topical sealer is applied to the surface of the concrete. 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. Work systematically from one end to the other spraying in lines.

Topical sealers can be made from acrylic epoxy and polyurethane based materials. The concrete surface substrate shall be clean and free from contamination such as dust oil grease organic growth and release agents etc. Pour your chosen vapor barrier into a paint sprayer after the primer is dry and liberally spray an even coat onto the concrete roof. 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.

A gallon covers between 50 70 square feet per coat and two coats should be used to get the best result. Overlap the previous line every time you start a new one. The surface shall be free from standing water. These pores are interconnected within the concrete.

The sealer is impermeable provided it is applied correctly and forms a waterproof membrane around the concrete preventing moisture from entering the concrete.

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