Symbol of Reliable & Quality Products for Roofing & Waterproofing
BM TORCH G Membranes are APP (Atactic polypropylene) modified torch on bitumen membranes which are reinforced with non-woven polyester mat, bottom surface thermo-fusible polyethylene film and top surface slate/granule finish. They have phenomenal waterproofing qualities along with commendable mechanical properties such as tensile strength, tear strength, and puncture resistance. They exhibit good UV resistance and are quite durable.
Uses:
BM TORCH G membranes are perfect for general use in single layer waterproofing systems. They are suitable for both accessible or inaccessible concrete roofs, balconies, wet areas such as kitchens and bath rooms; below grade structures or any smooth concrete surface that require waterproofing.
BM TORCH G is generally used for exposed application as the top surfacing with slate / granule finish which is resistant to UV.
Application
The surface to be waterproofed should be clean, dry, firm, even. Any form of surface imperfection is undesirable.
Apply a coat of BM PRIME SBD41 solvent based primer on the prepared surface and let dry.
Use propane/butane gas for binding the membranes to the surface. Start laying from the lowest point of the roof. Leave overlapping area plain without slate/granules (8cm-10cm) so that the water can be shed. Excessive heating may lead to damage of the reinforcement. Stagger the overlaps of the adjacent rolls. The side laps should at least be 8cm and end laps should be 15 cm.
Carefully prepare the details such as corners, edges and joints in advance by torching and fixing strips of BM TORCH G in place. Ensure perfect bonding without any opening by dressing the overlaps with a hand towel. Scrap off the granules on the top surface to ensure perfect joint