PolyFelt 3.5 is a lightweight continuous spun-bond filament polyester geotextile protective filter fabric that provides excellent strength to weight ratio.
Install on the insulation to protect it from UV degradation, ballast, and growing medium entering the joints and potentially clogging the drain.
4,050 sq. ft. per roll
Should be overlapped a minimum of 12”, turn up above overburden at all perimeters and fasten immediately after installation. Any protruding fabric after overburden has been installed should be removed.
12.5″ X 360’/ Loose shipped
Roll Weight 110 lbs.