SKU: 63855105514

GAF MasterFlow Zinc Moss & Mildew Preventer, 2.67 in x 50 ft Roll (NMM50)

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Description

GAF MasterFlow Zinc Moss & Mildew Preventer, 2.67 in x 50 ft Roll (NMM50)Zinc Roof Moss & Mildew Preventer Roll Install this zinc strip near the roof ridge to help inhibit moss and mildew growth on shingles. Durable zinc material delivers long lasting protection in a convenient 2. 67 in x 50 ft roll for easy application on residential roofs. Key Features: Long Lasting Protection: Zinc composition helps prevent moss and mildew growth on roofs Easy Installation: Installs near the ridge; roll format allows quick cutting and

Zinc Roof Moss & Mildew Preventer Roll

Install this zinc strip near the roof ridge to help inhibit moss and mildew growth on shingles. Durable zinc material delivers long-lasting protection in a convenient 2.67 in x 50 ft roll for easy application on residential roofs.


Key Features:

  • Long-Lasting Protection: Zinc composition helps prevent moss and mildew growth on roofs
  • Easy Installation: Installs near the ridge; roll format allows quick cutting and placement
  • Durable Material: Mill finish zinc resists weathering for extended service life
  • Ideal Coverage: 2.67 in width by 50 ft length fits along ridgelines and problem areas
  • Trusted Brand: Part of the MasterFlow line from GAF for roofing accessories

Specifications Table:

Specification Details
Manufacturer Part Number NMM50
Brand GAF
Product Line MasterFlow
Material Zinc
Finish Mill Finish
Dimensions 2.67 in x 50 ft
Unit of Measure Roll (RL)
Item Weight 4.5 lb
Applicable Standards EPA Approved
Intended Use Install near roof ridge to help prevent moss and mildew growth

Frequently Asked Questions (FAQ):

Q: How is this product installed?
A: Cut the zinc strip to length and fasten it near the roof ridge under the cap shingles, allowing rainwater to wash zinc ions down the roof surface.


Q: What roof types is it compatible with?
A: Designed for use on typical asphalt shingle roofs; verify suitability with your roofer for other materials.


Q: How long does the protection last?
A: Zinc strips provide multi-year protection as rain releases zinc ions over time; inspect periodically and replace when significantly corroded or depleted.


Q: What are the roll dimensions?
A: Each roll measures approximately 2.67 inches wide by 50 feet long.


Q: Is it EPA approved?
A: Yes, the product is listed as EPA approved.


A Sleek Zinc Line That Keeps Your Roof Pristine

I love how a discreet ribbon of zinc can so elegantly preserve a home’s silhouette, keeping the roof crisp and clean. The mill-finish sheen feels industrial-chic, disappearing visually while working tirelessly. Run it along the ridge beneath cap shingles and pair with charcoal asphalt for a refined, low-maintenance statement. It’s a quiet luxury—performance that protects the architecture you love.


Safeguard your roof’s look and longevity—add this zinc moss preventer roll to your project today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 63855105514

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4.8 ★★★★★
Based on 17 reviews
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Verified Purchase
Marilyn
San Leandro, US
★★★★★ 5
Great Power Strip
Color: White
Works great for our guest bedroom.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
T
Verified Purchase
trc
Massapequa, US
★★★★★ 3
Nice but a bit awkward
Color: White
Kind of awkward to use but provides more outlets. I put it under my computer shelf so it doesn’t look bulky & it works fine. It can slip around from time to time when plugging in things but I’m living with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 16, 2024
S
shannon oakley
Phoenix, US
★★★★★ 5
Great room divider
Color: Black, Size: 4 Panel-88'', Color: Black, Size: 4 Panel-88''
This is a room divider and would work great as one! I’m using it as a cover for my car port/garage so you can’t look in and see my messy garage as easily and for what I’m using it for it’s a little not quite as sturdy as I need it to but I’m sure it’s not meant to be used outside anyways so I don’t fault the product since I’m not using it as intended… with that said though…. It still covers my garage beautifully and really does exactly what a I need it to! I’m sure the wind may blow it over if it gets too crazy but I don’t see it breaking by any means. The frame is metal and drilled together using long screws. It’s very well built. The cloth for the panels is this waterproof type material that’s kind of like the gazebo roof feeling. So it’s easy to clean and it’s easy to wipe. You can put it straight or bend the panels and either way it still stands up. You don’t HAVE to bend it to make it stand or anything. You can literally use it straight across like I am in the pictures. Overall very happy with this product and it’s also very tall so it truly covers a lot (hides a lot lol). I’m 5’8 so you can see it’s taller than me by the pic I took
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
F
3fingers
Houston, US
★★★★★ 3
OK. Drag to setup. Needs more stable feet
Color: Black, Size: 4 Panel-88''
I was glad to find these. The benefits of having them in a recording setup is helping suppressing noise for a vocal booth. It's a layer that surrounds the recording box. Nice! (But away from audio hardware or DAW). Here is the not so nice part: The feet! It's able to stand (as it needs to do this). But it cannot be bumped. If it does, it's coming down onto something. I believe the feet units are not wide enough (or long enough). That makes for an easier tumble risk. So far, they haven't, but it's like being in the woods over leaves - it feels dangerous with every step! (That's actually true). They are tall enough, wide enough, material OK. But the feet for the main assembly do not seem sturdy enough. There are ways to help that. I'm thinking a 2x4 to augment the base. Make them wider. It can be done. It was a drag to set these up, and I'm sure to modify them like i'd want them. But, they do come in at a much lower price that other similar dividers. Consider all this because I've seen more solid dividers ( with padding) that would basically be the 1/2 cost of these. But i'd think they'd be easier to assemble, stand sturdier, and without that feeling of an impending fall (or fail). This is my opinion. I hope it helps.
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Reviewed in the United States on May 29, 2026
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 1
wrong size of metal components. incorrect items. non functioning
Color: Black, Size: 4 Panel-88''
The owner of this product sent me the incorrect pieces when I tried to install. It didn’t fit. The pieces were missing holes and once I connected the wrong pieces after knowing now they’re stuck and I can’t return them even though Amazon was kind enough to refund me. I just want to warn people this product is such a disappointment because it looks good. It’s good price, but you can’t even assemble the thing very disappointed.
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Reviewed in the United States on May 31, 2026

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