








💧 Keep it dry, keep it sleek — the ultimate under-deck upgrade!
The Under Deck Drainage System Z/50/12 is a 50-foot long, 30 mil thick black polyethylene membrane designed for 12-inch joist spacing. Its patented Z-fold design channels water efficiently, preventing leaks and protecting your deck structure. Easy to install with staple, tape, and downspout, it offers a cost-effective solution to create dry, usable storage space beneath decks, compatible with various wood types and backed by a 20-year warranty.
| Manufacturer | Goberco Building Products |
| Part number | 20130003 |
| Item Weight | 4.67 Kilograms |
| 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 |
| Color | Black |
| Batteries Included? | No |
| Batteries Required? | No |
G**Y
As good a system as the other company!
We are installing a replacement deck and wanted to keep the porch below dry so we looked for options. I found this system and am very happy with it. First, it will cost 1/3 of most other under deck drainage systems. Instead of $50 a rafter for parts, this will cost about 15 for a 10 foot deck. The price is for a 50 foot roll so you cut to fit from that. The system does not require an expensive collector at the end, simply cut an X into the material and screw on a downspout connector, I added some butyl tape for extra security and water proofing but that isn't really necessary. The material is a stiff plastic which has a drain down the center bent into the material. Staple in place with a drop down to the outlet end and bend the end upward into place, you are done. Great material and really fast shipping! It was shipped the next day from Canada and was at my place in 3 days from ordering. Good company, great shipping excellent product!
J**.
Good, heavy duty product! Installation instructions could be better in my opinion.
Product seems.to be very durable. I would recommend as a 2 person installation. It may have been that I am a homeowner installing this and not a contractor. In my opinion, the installation directions were alittle lacking and could be improved on, but as stated before, the product I'm happy with, and would recommend.
T**R
Descent product
Definitely use 4” tape (BLACK). Use longest staples your gun will staple. Cannot use compressed air stapler in my experience. Will significantly warp and twist in high temps during install. Try to have done in one day. On long runs (I did 16’) maybe not the best product. Mine is pooling in the middle. I cannot imagine running a 16’ elevated deck at a 2 degree downslope which would put constant tension on the house rim joist. Make sure to use lateral bracing if so. I’m no engineer, but…
R**R
Great product!
I just finished rebuilding my second story deck. Easy to install. Works great!
B**N
Expensive and hard to install
Expensive for what it is. Very rigid plastic with big size variation with temperature: installation under cold temperatures is not recommended. It is hard to get a good regular slope on distances over 10 ft. Knowing all the above I would have used another solution.
Trustpilot
3 days ago
3 weeks ago