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Single Membrane Piece Acts as Flashing (90° fold at ledger board/house wall) + Gutter (between each joist) + Funnel (water evacuation at rim joist).

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On existing deck you can install the membrane under-joists or between-joists without removing boards (see installation for details)

Under Deck Drainage System

Transform your deck with Goberco's Under Deck Drainage System - Waterproofing & protection made easy

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  • On-top-of-joists installation: keeps framing and under deck area dry with heavy-duty 30mil thick black LLDPE polyethylene.
  • Easy installation: staple on top of sloped joists, self-sealing tape over joints and screw downspouts for water evacuation.
  • Lower price, higher quality: material cost around $2/sqft including Goberco trough, self-sealing joist tape and low-cost gutter options.
  • Thicker material: Our Under Deck Drainage System provides enhanced waterproofing and reduces the risk of water infiltration. 
  • Easy water drainage: patented z-fold channels and a single membrane piece acting as flashing, deep gutter between joists, and funnel for efficient water drainage.
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Shop Goberco products online for fast delivery across Canada and USA

Quality products delivered to your doorstep

Upgrade your outdoor space with Goberco's Under Deck Drainage System. Shop conveniently online and enjoy fast delivery to your doorstep. Say goodbye to water damage and hello to a dry, functional under-deck area. Transform your deck with ease and convenience today!

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