How To Waterproof Concrete Rooftop

This is one of the common causes of flat roof waterproofing failure.

How to waterproof concrete rooftop.

Would cause a breakdown on the roof surface. Always wear eye protection and waterproof gloves when working with polyurethane sealant and work in a well ventilated area. Waterproofing the concrete slab waterproofing waterproofingconcrete waterproofingslab waterproofing paint waterproofing wood waterproofing membrane wat. Cleaning priming treatment of details main coating application and inspection.

Know which walls to apply waterproofing to. Scrub the surface vigorously with a long handled scrub brush. Topical sealers can be made from acrylic epoxy and polyurethane based materials. Finishing up and other considerations 1.

Deciding which walls to waterproof and which ones to forgo can save you. Work systematically from one end to the other spraying in lines. Allow the vapor barrier to dry before you add a second coat. Make sure the concrete is completely dry.

During construction precautions must be taken to prevent excessive moisture from being trapped between the reinforced concrete roof structure and membrane. In general a minimum fall of 1 in 80 will help to prevent ponding of water. Apply a suitable. Step 1 widen the crack to a minimum of 1 4 inch using a chisel and hammer the edges of the crack should be vertical or beveled in an inverted v.

Apply the finish system you have selected to the wall according to the manufacturer s directions. When waterproofing concrete a topical sealer is applied to the surface of the concrete. Sprinkle the cleaner etcher on the surface and leave it on for 10 to 20 minutes. Overlap the previous line every time you start a new one.

Pour your chosen vapor barrier into a paint sprayer after the primer is dry and liberally spray an even coat onto the concrete roof.