---
product_id: 244157962
title: "Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage"
brand: "goberco"
price: "¥66632"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/244157962-goberco-under-deck-drainage-system-z-50-12-50-feet
store_origin: JP
region: Japan
---

# Optimized for 12-inch joist spacing 50 ft roll length 30 mil industrial-grade thickness Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage

**Brand:** goberco
**Price:** ¥66632
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your deck dry, your storage stylish, and your neighbors envious!

## Quick Answers

- **What is this?** Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage by goberco
- **How much does it cost?** ¥66632 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/244157962-goberco-under-deck-drainage-system-z-50-12-50-feet)

## Best For

- goberco enthusiasts

## Why This Product

- Trusted goberco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cost-Effective Protection:** Premium waterproofing at just about $1.2/sq.ft., beating typical market prices without compromise.
- • **Effortless Dry Zone Creation:** Install on top of joists to keep your under-deck space completely dry and usable.
- • **Precision Fit for 12" Joists:** Designed specifically for 12-inch joist spacing for seamless coverage and performance.
- • **Industrial-Grade Waterproofing:** 30 mil thick black LLDPE membrane ensures maximum durability and water resistance.
- • **Simple, DIY-Friendly Installation:** Staple, seal, and screw downspouts—no professional needed, saving time and money.

## Overview

The Goberco Under Deck Drainage System is a 50-foot long, 30 mil thick waterproof membrane designed for 12-inch joist spacing. It installs easily on top of joists to create a dry, protected space beneath decks, using industrial-grade LLDPE material for long-lasting durability and cost-effective waterproofing.

## Description

International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Features

- On-top of joists installation - keep framing and under deck area dry.
- Industrial grade waterproofing membrane 30 mils thick black, each roll is 50' long, covering 50 s.f., for 12'' joist spacing.
- Easy to install - 1. Staple on top of joists 2. Self sealing tape over joints 3. Screw downspouts to water evacuation holes.
- Material cost is between $ 1.5 - $ 2/s.f. ( goberco membrane is about $1.2/s.f., a good self sealing deck tape is about $0.4/s.f. , typical plastic gutter + down spout + roofing screws are low cost ).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Goberco Building Products |
| Part Number | 20130003 |
| Product Dimensions | 25.4 x 25.4 x 35.56 cm; 4.67 kg |
| Item model number | 1725503016 |
| Size | 50' long roll-for 12'' joist spacing-30 mil lldpe |
| Colour | Black/White |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 4.67 kg |

## Images

![Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage - Image 1](https://m.media-amazon.com/images/I/61uJhIgIDAL.jpg)
![Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage - Image 2](https://m.media-amazon.com/images/I/81JaOcp5foL.jpg)
![Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage - Image 3](https://m.media-amazon.com/images/I/81JaOcp5foL.jpg)
![Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage - Image 4](https://m.media-amazon.com/images/I/81-6B1m7hZL.jpg)
![Goberco Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage - Image 5](https://m.media-amazon.com/images/I/718jY3iyPWL.jpg)

## Frequently Bought Together

- Under Deck Drainage System -Z/50/12-50 feet Long Roll, for 12 inches Joist Spacing, 30 Mil Thick Black Trough Top Side, Down Site is White, Create Dry Below Deck Storage
- Under Deck Drainage System -Z/50/16-50 feet Long Roll, for 16 inches Joist Spacing, 30 Mil Thick Trough, top Side Black + Down Side White.
- E-SDS Joist Tape for Decking,1 5/8" X 50'*10 Roll Butyl Tape Deck Joist Flashing Tape Anticorrosive Waterproof Deck Tape

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**Shop now:** [https://www.desertcart.jp/products/244157962-goberco-under-deck-drainage-system-z-50-12-50-feet](https://www.desertcart.jp/products/244157962-goberco-under-deck-drainage-system-z-50-12-50-feet)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*