PATENTED CONSTRUCTION
Fortress Pro’s unique patented microporous construction provides the ultimate in strength and durability for demanding applications.

• Microporous, reinforced breathable membrane withstands the demands of installation for long-term protection against water and air penetration.
• Grid of high strength fiber reinforcement is bonded to a soft non-woven fabric for a lightweight yet durable housewrap with excellent staple and nail holding strength.
• Coated and Microflex® intermeshed, creating billions of mircopores. Pore sizes are smaller than a drop of water so rain won’t penetrate, but larger than water vapor molecules so water vapor will escape the wall cavity.

Fortress Pro™ Weather Protective Barrier was developed specifically to meet today’s demanding expectations for an energy-efficient and healthy living environment. Building science experts focus on two major functions of a breathable housewrap: They expect it to prevent airflow through the outside walls, and to stop and drain liquid water that has penetrated the exterior finish. The end result is a more maintenance-free structure reducing the risks of rot, mold and mildew while reducing air infiltration and lowering energy costs.