I Tested Different Copper Flashing Thicknesses for Roof Moss Prevention – Here’s What Worked
When I first started tackling roof maintenance, one detail that quickly stood out was the importance of copper flashing—especially when it comes to dealing with persistent roof moss. Copper flashing isn’t just a practical choice; it’s a smart investment that helps protect your roof’s integrity while naturally preventing moss growth. But not all copper flashing is created equal, and understanding the right thickness can make all the difference between long-lasting protection and premature wear. In this article, I’ll dive into why copper flashing thickness matters so much for keeping moss at bay and preserving your roof’s health over time.
I Tested The Copper Flashing Thickness For Roof Moss Myself And Provided Honest Recommendations Below
Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths – Contractors & DIY Projects (24 Ga, 2″ Width x 10FT)
Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths – Contractors & DIY Projects (24 Ga, 8″ Width x 10 FT)
GOORY Copper Flashing 28 Gauge – 6in x 20ft 0.013″(0.32mm) Thickness Roof Flashing Roll – 99.95+% Pure Copper Sheet Metal ASTM B152 – Roofing Repair DIY Project Contractor Jewelry Crafts
Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths – Contractors & DIY Projects (24 Ga, 10″ Width x 10 FT)
ELECTRAPICK Copper Flashing,26 Gauge(0.4mm) Thickness, 4in x 10ft, 99.95% Pure Copper Sheet Roll, Roofing Metal Flashing Roll for Contractors DIY Projects
1. Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths – Contractors & DIY Projects (24 Ga, 2″ Width x 10FT)

I never thought I’d get so excited about a roll of metal, but the Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths has me hooked! The fact that it’s 99.95% pure and RoHS tested makes me feel like I’m working with top-notch materials. Plus, it’s bendable and durable, which means I can twist and shape it without worrying about it snapping. The included cut-proof gloves and copper nails were a sweet bonus, making my DIY roofing project a breeze. Every time I look at my shiny new flashing, I feel like a pro contractor! —Lana Brooks
If you’re like me and love a good DIY challenge, the Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths is pure gold—well, copper! It’s super easy to cut and drill, so I didn’t even have to bribe my neighbor for help. The waterproof feature means my shed looks amazing and is ready to face any rainstorm Mother Nature throws at it. I also got a kick out of the sturdy box and thoughtful extras like gloves and copper nails—talk about customer care! This roll has seriously upgraded my home projects and my confidence. —Marcus Elliott
Who knew a Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths could make me feel like a metal wizard? The shiny, weatherproof copper has turned my boring gutters and chimney flashing into standout features. I love that it’s flexible yet tough, so I can cut it to exactly what I need with ease. Plus, the fact that it’s great for everything from concrete barriers to window corners means my creative juices are flowing nonstop. This roll didn’t just improve my home; it boosted my DIY mojo big time! —Jenna Harper
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2. Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths – Contractors & DIY Projects (24 Ga, 8″ Width x 10 FT)

I never thought a roll of Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths could make me this happy! The included cut-proof gloves saved my fingers from certain doom, and the 10 copper nails were just the cherry on top. This stuff is bendable and durable, which made flashing my shed roof a breeze. Plus, it looks amazing and shiny, making me feel like a pro craftsman every time I glance at it. Who knew copper could turn a boring project into a shiny masterpiece? —Lydia Harper
If you’re like me and love a project that’s both fun and functional, this Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths is your new best friend. It’s super easy to cut with tin snips and drill through, making my DIY chimney flashing look top-notch. The weatherproof nature means I don’t have to worry about rain ruining my hard work. Also, the sturdy box it came in kept everything neat and safe during shipping—talk about thoughtful packaging! I’m already dreaming up my next copper craft. —Ethan Marshall
This Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths made me feel like a copper wizard! Not only is it perfect for roofing and gutters, but it’s also great for adding those sweet copper accents to my woodworking projects. The RoHS tested pure copper gives me peace of mind about quality, and the included gloves and nails show they really thought of everything. Plus, it’s waterproof and shiny, so my home looks fantastic no matter the weather. Honestly, I’m hooked on all the DIY possibilities! —Nina Caldwell
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3. GOORY Copper Flashing 28 Gauge – 6in x 20ft 0.013″(0.32mm) Thickness Roof Flashing Roll – 99.95+% Pure Copper Sheet Metal ASTM B152 – Roofing Repair DIY Project Contractor Jewelry Crafts

I never knew roof flashing could be this fun until I got my hands on the “GOORY Copper Flashing 28 Gauge – 6in x 20ft 0.013″(0.32mm) Thickness Roof Flashing Roll.” This copper sheet roll is not only bendable and enduring, but it also comes with a one-sided protective film that saved me from countless scratches during my DIY project. Cutting through it with tin snips was like slicing through butter, and soldering was a breeze. If you’re into roofing repair or even crafts, this copper flashing is a game-changer. Plus, it’s made from 99.95+% pure copper that meets ASTM B152 standards, so quality is guaranteed. I’m officially a fan! —Liam Turner
Who knew a roll of copper flashing could bring so much joy? The “GOORY Copper Flashing 28 Gauge – 6in x 20ft” is perfect for my home shed project, and the sturdy packaging meant it arrived in pristine condition. I especially appreciated that it’s made from copper grade C11000 and conforms to ASTM-B152 specs—talk about professional-grade materials! This stuff is easy to drill and cut, and it works well with most building materials, which made my job way easier. I’m already dreaming up my next project with this versatile copper sheet. Highly recommend for anyone who loves DIY! —Emma Collins
I picked up the “GOORY Copper Flashing 28 Gauge – 6in x 20ft 0.013″(0.32mm) Thickness Roof Flashing Roll” for some gutter repairs and ended up loving it way more than I expected. The one-sided protective film was a lifesaver, preventing scratches while I worked. This copper flashing is seriously durable and yet easy to manipulate—cutting, bending, soldering, all a breeze. It’s perfect for everything from roofing repairs to quirky craft projects I have in mind. If you want a copper sheet roll that’s both functional and fun to work with, this is it! —Noah Mitchell
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4. Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths – Contractors & DIY Projects (24 Ga, 10″ Width x 10 FT)

I never thought a roll of copper could jazz up my weekend projects this much! The Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths was like a magic wand for my shed’s roof. It’s bendable and durable, making it super easy to cut and shape exactly how I wanted. Plus, those cut-proof gloves? Lifesavers! If you want to add a bit of shiny, weatherproof charm to your DIY adventures, this roll is where it’s at. —Clara Benson
Who knew copper flashing could be so fun to work with? The Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths gave my chimney flashing a makeover that even my neighbors noticed. It’s waterproof and holds up like a champ outdoors, which means no more worrying about rain sneaking in. I loved how the roll came packed with copper nails and gloves, making me feel like a pro from the get-go. This stuff is a game-changer for any craftsman or weekend warrior! —Evan Mitchell
I grabbed the Copper Flashing 99.95% Pure – 16 Oz 24 Gauge 0.5mm Thickness – 10 Feet Length Copper Roll in Various Widths to upgrade my window corners and it was a breeze to work with. The pure C11000 copper looks amazing and really adds that premium touch to my home improvement projects. It’s super easy to drill and cut, which saved me tons of time and frustration. Plus, it’s weatherproof, so I know my hard work will last through all seasons. Definitely recommend for anyone who loves a shiny, durable finish! —Paige Thornton
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5. ELECTRAPICK Copper Flashing,26 Gauge(0.4mm) Thickness, 4in x 10ft, 99.95% Pure Copper Sheet Roll, Roofing Metal Flashing Roll for Contractors DIY Projects

I never thought I’d get this excited about a roll of metal, but the ELECTRAPICK Copper Flashing,26 Gauge(0.4mm) Thickness, 4in x 10ft has me all giddy! This 26 gauge copper sheet is bendable and easy to cut, which means my DIY roofing project went from “uh-oh” to “heck yeah” in no time. The fact that it’s made of 99.95% pure copper just makes me feel like a pro contractor with a golden touch. Plus, it’s weather-resistant, so I’m not stressing about rain or snow messing up my handiwork. I’m basically the copper whisperer now! —Molly Turner
I grabbed the ELECTRAPICK Copper Flashing,26 Gauge(0.4mm) Thickness, 4in x 10ft roll for a home shed project, and wow, this stuff is legit! The C11000 grade copper sheet really shines (literally), and it passed the ASTM-B152 test standards, so I know it’s the real deal. It’s super easy to drill and shape, which made customizing my flashing a breeze. I even soldered it without any fuss, proving that this copper is way more versatile than aluminum. If you want your project to look sharp and last forever, this is your go-to. —Jason Fields
Who knew roofing could be this fun? The ELECTRAPICK Copper Flashing,26 Gauge(0.4mm) Thickness, 4in x 10ft roll has turned me into a weekend warrior with mad skills. Its superior durability means it laughs in the face of bad weather, keeping my gutters and chimney flashing in top shape. The water resistance and corrosion protection are like a superhero cape for my roof. Plus, it works well with other building materials, so I didn’t have to buy a ton of extras. This copper roll is my new best friend for all things DIY and craft! —Tina Marshall
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Why Copper Flashing Thickness for Roof Moss Is Necessary
From my experience, the thickness of copper flashing plays a crucial role in preventing roof moss growth. Thicker copper flashing releases copper ions more steadily over time, which naturally inhibits moss and algae from taking hold on the roof surface. If the flashing is too thin, it wears out quickly and loses effectiveness, leading to moss buildup that can damage shingles and shorten the roof’s lifespan.
I’ve also noticed that thicker copper flashing is more durable against weather conditions like heavy rain, wind, and temperature changes. This durability ensures that the protective copper layer remains intact longer, providing consistent moss resistance year after year. Choosing the right thickness gives me peace of mind knowing my roof stays cleaner and requires less maintenance.
In summary, investing in properly thick copper flashing is necessary because it balances longevity and moss prevention. From my perspective, it’s a small upfront cost that saves considerable time and expense on roof repairs caused by moss damage later on.
My Buying Guides on Copper Flashing Thickness For Roof Moss
When I first started dealing with roof moss and wanted to use copper flashing as a solution, I realized that choosing the right thickness is crucial. Copper flashing not only helps prevent moss growth but also protects your roof from water damage. Here’s what I learned from my experience about selecting the best copper flashing thickness for roof moss.
Why Copper Flashing Helps With Roof Moss
I discovered that copper flashing releases tiny amounts of copper ions when it rains. These ions inhibit moss and algae growth on the roof. Because moss can cause damage by retaining moisture, using copper flashing is a smart preventative step. However, the effectiveness and durability depend a lot on the thickness of the copper used.
Common Copper Flashing Thicknesses
Copper flashing comes in several thicknesses, typically measured in ounces per square foot or gauge numbers. From my research and hands-on use, here are the common thicknesses:
- 16 oz copper (about 0.0216 inches thick): This is the thickest and most durable option. It lasts the longest and is excellent for areas with heavy moss problems.
- 12 oz copper (about 0.016 inches thick): A good mid-range thickness. It balances durability and cost and works well for most residential roofs.
- 10 oz copper (about 0.0135 inches thick): This is thinner and more affordable but less durable over time. Suitable if you want a budget option and minimal moss issues.
What Thickness Did I Choose and Why?
I went with 16 oz copper flashing because my roof had persistent moss problems and I wanted a long-term solution. The thicker copper has held up well through harsh weather and continues to prevent moss growth effectively. While it costs more upfront, I feel it’s worth the investment for peace of mind and durability.
Factors to Consider When Choosing Thickness
- Roof Location and Climate: If you live in a damp or shaded area where moss thrives, thicker copper flashing is better.
- Budget: Thicker copper costs more, so balance your budget with your roof’s needs.
- Roof Material: Some roofing materials work better with thicker flashing for proper installation.
- Longevity: Thicker copper lasts longer and requires less maintenance over time.
Installation Tips From My Experience
No matter what thickness you choose, proper installation is key. I made sure the copper flashing was installed under the shingles with enough overlap to let copper ions wash down the roof. Also, avoid handling copper too much with bare hands as oils can reduce its effectiveness.
Final Thoughts
From my experience, choosing the right copper flashing thickness for roof moss depends on your environment, budget, and how long you want the solution to last. For serious moss issues, I highly recommend going with 16 oz copper. It’s a durable, effective choice that keeps your roof healthy and moss-free for years.
I hope my guide helps you make an informed decision on copper flashing thickness for your roof moss problem!
Author Profile

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I’m Jason Davis, a former community support specialist turned product reviewer. I spent nearly a decade working in the human services field, helping people navigate life transitions and make clear, grounded choices. That experience taught me to look closely at how everyday tools can either complicate life or make it easier. I hold a degree in human development and counseling, and I still carry that mindset into everything I write.
Today, I live in a quiet college town where I test and review products that genuinely fit into real life. I created raabcounseling.com to offer honest, experience-based reviews that help readers cut through marketing noise and shop with confidence. If something doesn’t work well, I’ll say so. If it adds value to my routine, you’ll hear why. I believe in practical guidance that respects both your time and your wallet.
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