Industrial grade product, heavy-duty application.
Excellent resistance to puncture.
Superior tolerance to thermal shock.
Excellent dimensional stability.
TWIN-GUARD membranes are made by saturating and coating reinforcements of spun bond nonwoven polyester and fiberglass mat 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.
TWIN-GUARD 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 TWIN-GUARD 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.
TWIN-GUARD membranes conform to the requirements of ASTM D 6223-98, UEAtc, MOAT: 27 and MOAT: 30
The membrane incorporates two cores. The non-woven polyester core is placed slightly above the center of the membrane, while the fiberglass mat is positioned at the upper surface of the membrane. This careful positioning of the reinforcing cores enables the membrane to withstand high dynamic stresses transmitted by the substrate, superior puncture resistance and maintains shape stability.
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 film the membranes are produced in thickness of 4mm or 5 mm and in a standard length of 10 mtrs. and 1 mtr width.