1001 Heat Barrier WT is a flexible, liquid applied, single component, UV and weather resistant, acrylic waterproofing membrane for all types of exposed roof slabs (new and old), terraces (sloped and flat), etc. 1001 Heat Barrier WT contains cross-linking polymers, special glass micro fibers, pigments and advanced anti- fungal additive that provides long lasting tough water- proofing membrane. The high Solar Reflective Index of the membrane serves as a heat reflective surface and reduces heat ingress keeping the interior of the building cooler.