POLYMAT membranes are designed for the protection of concrete substructures, such as manholes, chambers, lift stations, etc, where waterproofing of concrete surfaces in the presence of hydrostatic pressure and from corrosive ground-water is necessary.
TOOLS FOR FIXING THE MEMBRANE
Gas torch for welding, related cylinder, knife for trimming the membrane, a trowel with a rounded tip, marking aids, hand gloves, and safety goggles.
QUALITY ASSURANCE & MATERIAL WARRANTY
Imperbit Membrane Industries’ Management system is registered to ISO 9001 standards & all POLYMAT 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.
APPLICATION OF WATERPROOFING SYSTEM
The concrete surface to be waterproofed shall be dry and completely cleaned to remove any contamination from dust, sand, dirt, oil or grease, loose aggregate and debris etc. The surface meant to receive the waterproofing membrane shall be smooth and free of protruding nibs, nails or sharp protrusions. All voids, cracked concrete surfaces, chipped and spalled areas shall be made good. Pre-formed/cast indentations in manhole used for handling/lifting concrete sections shall be smoothened by filling in mortar.
Preparation of internal and external corners:
* All external corners to be chamfered to remove sharp edges.
* At all internal corners at 30 x 30 mm fillet of sand-cement shall be prepared, alternately pre-
fabricated fillets or bituminous mastic fillets may be used.