How To Apply White Cement On Roof

Old patches of roof cement should be removed and rust should be cleaned from metal surfaces.

How to apply white cement on roof.

Before applying plastic roofing cement the surface must be clean and dry. Apply from 0 f to 120 f 18 c to 49 c 100 wet surface adhesion per astm d3409 standard test method for adhesion of asphalt roof cement to damp wet or underwater surfaces. Made from heavy bodied asphalt it spreads easily. Apply cement up to 1 2 inch thick when sealing flashing.

Serious ponding should be referred to a roofing contractor. Rubberized for improved flexibility and durability. 10 year limited. For sealing down shingles or flashing use around a quarter to half inch thick layer of roofing cement.

This will enable you more control. For roof blisters bust the blister open and make sure it s dry first before applying the cement. If you have larger holes or fissures in the roofing you may need to install rolled roofing or other fabrics first before sealing it over with. Using elastek 103 crack joint sealant and reinforce with polyester roof fabric as necessary.

This surface preparation ensures that the cement has the ideal surface to bond to. Repair and seal roof penetrations tears open seams etc. Roofers choice 15 plastic roof cement is a trowel grade sealant for dry surfaces. Apply roof cement with a trowel going to a depth of about 1 8 inch.

No blistering sagging or sliding per astm d4586 standard specification for asphalt roof cement. When patching a roof blister open the blister and allow it to dry thoroughly before applying roof cement. It forms a tough film that won t become brittle and crack in the coldest weather or run and sag in the hottest. Concrete masonry and other absorbent surfaces may need a coat of primer before application.

Roofing cement can be use to seal a roof and to fix tiles shingles roll asphalt and any other roof material.