It can protect your insulation from mold and rot. Let the house breathable freely. Test items/unit Index Specification1.5mX50m Thickness 0.30mm Vapor transmission rat1000g/m2.24h Watertightness500-2000mm water-column,2h,Impermeable Maximum tension(longitudinal)220N/50mm Maximum tension(transversal)111N/50mm Elongation at break(longitudinal)110% Elongation at break(transversal)100% Tear resistance(longitudinal)135N Tear resistance(transversal)100N Air oven aging test80 168h Maximum tension retention (longitudinal/transversal) 98%/87% Elongation retention at fracture (longitudinal/transversal) 72%/72% Anti-UV 4 months Flame retardant B1 Meterial:PP fabric+PP breathable film+PP fabric. Light weight,easy to handle,UV and heat resistant,and fast to install,house wrap is pliable,so it readily wraps around corners,interfaces at joints,and wraps over unique architectural geometries.