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. Repair and seal roof penetrations tears open seams etc. Apply roof cement with a trowel going to a depth of about 1 8 inch. Avoid using plastic roof cement. This will enable you more control.

In larger or deep ponding areas apply elastek 500 puddle plaster to fill in areas that hold water. 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. Serious ponding should be referred to a roofing contractor.

For roof blisters bust the blister open and make sure it s dry first before applying the cement. When patching a roof blister open the blister and allow it to dry thoroughly before applying roof cement. Using elastek 103 crack joint sealant and reinforce with polyester roof fabric as necessary. It is best to work in small areas rather than try to do all at once.

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. For sealing down shingles or flashing use around a quarter to half inch thick layer of roofing cement. No blistering sagging or sliding per astm d4586 standard specification for asphalt roof cement.

10 year limited. This surface preparation ensures that the cement has the ideal surface to bond to. 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. Rubberized for improved flexibility and durability.

Apply cement up to 1 2 inch thick when sealing flashing.