Under Deck Drainage System, 50 FT Roll with 12 in Joist, 3-in-1 Waterproof Membrane with Built-in Self-Flashing & Self-Funnel, Heavy-Duty 30 Mil, Top-of-Joist System, US Patent.

Description

💧 Keep your deck dry, your style high, and your neighbors wondering how you did it.

The Under Deck Drainage System is a patented, heavy-duty 50-foot roll membrane designed for top-of-joist installation. Featuring a 30 mil thick polyethylene build, a unique Z-Fold self-flashing and funnel system, and a 3.5-inch deep water channel, it ensures superior waterproofing and efficient water evacuation. Compatible with treated, cedar, and composite wood, it offers an affordable, easy-to-install solution trusted by thousands across North America, backed by a 20-year limited warranty.