TYPAR® BuildingWrap is more than an extra layer of protection that secures the building envelope from the outside. It's also an added level of assurance that homes and structures will feel more comfortable on the inside. TYPAR BuildingWrap eliminates drafts in the wall, which helps reduce energy costs. Plus, the TYPAR® material itself will not support the growth of mold or disintegrate over time. Typar delivers the ideal MVT rate, allowing moisture vapor to escape from the wall cavities, which helps prevent mold, mildew and water damage. And that means more confidence and fewer worries over the long haul. Typar weather barriers will not absorb or retain water either. Typar provides superior air barrier performance in addition to preventing air leakage through gaps, cracks, or penetrations, resulting in improved energy efficiency. The Typar Weather Protection System has excellent surfactant resistance and will not degrade over time due to surfactants. It successfully resists cedar oil from siding and soaps from power-washing. ALSO AVAILABLE: 3' x 100': HH #2648-200 and 9' x 100': HH #2648-228.