how do you deal with water at the fashia end of the joist run? I do not see down spouts listed

At the end of the joist bay staple the membrane on top of rim joist then make a hole. Attach a piece of gutter downspout ( about 8'' long ) to this hole, make sure each downspout piece drops far enough into the gutter to prevent wind from pushing water off the gutter. Please see installation video on GOBERCO's website.

How do you account for accumulation of leaves, pine needles & helicopters falling from trees?

I usually account them one at a time. But to wash them away i have placed a drain system that allows removal. Just cut 4inch holes in a line opposite joist. Then place gutter under holes. Use gutter downspout pipe to direct flow into gutter. Then when accumulation occurs wash down, then slide out downspout pieces leaves and helicopters fall out. Been working for me.

Is this material non-combustible or a class b fire rated material? I need it to pass hfz code in riverside county ca

Hello, NFPA Flammability rating is 1 (Slight), please send us an email then we will forward you the spec date sheet. Thank you.

How many joist will a 50 foot roll do

For example a 50' roll will cover 4 joist bay of 12' long ( 12 x 4 = 48 ). If your joist are 16' long a roll can make 3 joist bay ( 16 x 3 = 48 ).

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Under Deck Drainage System, 50 FT Roll with 16 in Joist, 3-in-1 Waterproof Membrane with Built-in Self-Flashing & Self-Funnel, Heavy-Duty 30 Mil, Top-of-Joist System, US Patent.

Product ID: 69517418

💧Self-Sealing Design

📏50 ft Length

🛠️30 Mil Thickness

€ 270.66

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Elevate Your Deck Game with Goberco!

HEAVY DUTY DURABILITY - 30 mil thick lldpe ensures long-lasting performance.
SMART WATER MANAGEMENT - Redirects water flow efficiently with no special downspouts needed.
COST EFFECTIVE SOLUTION - Material costs under $2/s.f. for maximum savings.
EFFORTLESS INSTALLATION - Easily staple on top of joists for a quick setup.
LEAK PREVENTION MASTERY - Innovative design reduces leaks at the ledger board.

The Under Deck Drainage System by Goberco is a robust 50-foot long roll designed for 16-inch joist spacing, featuring a heavy-duty 30 mil thick lldpe construction. This innovative system is easy to install, cost-effective, and engineered to keep your under-deck area dry while preventing leaks. With a self-sealing design and smart water management features, it’s the ultimate solution for any deck owner looking to enhance their outdoor space.

Specifications

Manufacturer	Goberco Building Products inc.
Part Number	20130001
Item Weight	11.88 pounds
Item model number	1725503016
Is Discontinued By Manufacturer	No
Size	50' long roll-for 16'' joist spacing-30 mil lldpe
Color	Black
Thickness	0.75 Millimeters
Item Package Quantity	1
Outside Diameter	10 Inches
Cutting Diameter	9.5 Inches
Batteries Included?	No
Batteries Required?	No
Assembled Diameter	9.5 Inches

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€ 270.66

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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