BRIDGE-GUARD (HD) membranes are made by saturating and coating reinforcements of 250 gr./m2 spun bond non-woven polyester and 60 gr./m2 glass fibre tissue with a homogeneous thermoplastic blend of APP (Atactic Polypropylene), distilled bitumen and stabilizers. The mixture is carefully produced under controlled conditions to ensure its stability at high temperatures and its flexibility at lower temperatures.
BRIDGE-GUARD (HD) membranes are impermeable to water, and are specially formulated to withstand high thermal shock.
QUALITY ASSURANCE & MATERIAL WARRANTY
Imperbit Membrane Industries’ Management system is registered to ISO 9001 standards & all BRIDGE-GUARD (HD) membranes carry a 10 year material warranty. In addition to stringent regular test by IMI laboratory, our products are also tested periodically by independent laboratories.
BRIDGE-GUARD (HD) membranes conform to the requirements of ASTM D 6223 TYPE ll, UEAtc, MOAT: 27-1983 & MOAT: 64-2001.
Double reinforced membranes for waterproofing of large decks where dimensional stability of the membrane is important. The combination of polyester and glass fibre tissue reinforcement ensures superior shape and dimensional stability under severe cyclic conditions.
SURFACE FINISH AND SIZE OF ROLL
The top surface of the membrane is covered with a thin layer of PE film with IMI Logo or sand. The bottom surface is covered with printed IMI design film.
The membranes are produced in thickness of 5 mm and in a standard length of 10 mtrs. and 1 mtr width.