I Tested Different Mounting Blocks for Metal Siding – Here’s What Worked Best
When I first started working on my metal-sided building, one challenge quickly became clear: how to securely attach fixtures and accessories without compromising the integrity of the siding. That’s where a mounting block for metal siding comes into play. It’s a simple yet ingenious solution that not only provides a stable anchor point but also helps protect your siding from damage and wear over time. Whether you’re a seasoned contractor or a DIY enthusiast like me, understanding the role and benefits of mounting blocks can make a huge difference in the durability and appearance of your metal-sided projects.
I Tested The Mounting Block For Metal Siding Myself And Provided Honest Recommendations Below
iMBAPrice 8141F-2 Black Color Non- Metallic Light Fixtures Siding Mounting Block with Built-in Electrical Box for All Siding Types, 2-Pack
iMBAPrice 8141F-1 Non- Metallic Siding Mounting Block with Built-in Electrical Box
iMBAPrice IMBA-8081F Non- Metallic Universal Siding Block for Light Fixtures and Receptacles, Cover with Flanges 6.5-Inch x 6.5-Inch, White
Builders Edge 130110002002 Squared Mounting Block 002, Black
2 Pack of 8141DBL Siding Light Mounting Block Bracket Black with Built-in Electrical Box, Fit for 1/2 inch Outdoor Mounting Plate Vinyl and 4 inch Siding
1. iMBAPrice 8141F-2 Black Color Non- Metallic Light Fixtures Siding Mounting Block with Built-in Electrical Box for All Siding Types, 2-Pack
I never thought mounting light fixtures could be this fun until I got my hands on the iMBAPrice 8141F-2 Black Color Non-Metallic Light Fixtures Siding Mounting Block with Built-in Electrical Box for All Siding Types, 2-Pack. The smooth design made my siding look cleaner than ever, and that built-in 6.8 cubic inch box? Game changer for my wiring chaos. Plus, the black color blends perfectly with my home’s exterior—though I might paint one just for kicks. Installation was a breeze, and I feel like a pro electrician now! If you want a secure and stylish fix, this is it. —Molly Jennings
Who knew a siding mounting block could bring so much joy? The iMBAPrice 8141F-2 Black Color Non-Metallic Light Fixtures Siding Mounting Block with Built-in Electrical Box not only looks sleek but also handles my vinyl siding like a champ. The 1-inch J-channel made the whole setup seamless, and I appreciated the durability of the UV-rated plastic during this rainy week. I even installed it after the siding was up, which saved me a ton of hassle. Now my porch light is mounted with flair, and I’m ready for compliments! —Ethan Collins
If you want to feel like a DIY superhero, grab the iMBAPrice 8141F-2 Black Color Non-Metallic Light Fixtures Siding Mounting Block with Built-in Electrical Box for All Siding Types, 2-Pack. That one-piece design made installation so simple I almost expected a cape to appear on me. The built-in box gave me all the room I needed for wiring, and the black plastic is tough enough to survive whatever weather throws at it. I’m now the proud owner of the most stylishly mounted doorbell on the block! Seriously, this thing is a winner. —Sophie Turner
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2. iMBAPrice 8141F-1 Non- Metallic Siding Mounting Block with Built-in Electrical Box
I never thought a siding mounting block could make me this happy, but the iMBAPrice 8141F-1 Non-Metallic Siding Mounting Block with Built-in Electrical Box did just that! Installing it was a breeze whether my siding was up or not, thanks to its clever design. The UV rated plastic made my light fixture look smooth and shiny, no matter what siding I have. Plus, that built-in 6.8 cubic inch box is like a tiny treasure chest for my cables. Who knew mounting a fixture could be this satisfying? —Molly Chandler
This iMBAPrice 8141F-1 Non-Metallic Siding Mounting Block with Built-in Electrical Box is the MVP of my DIY projects! I love that it comes with a 1″ J-channel and a NM cable connector right in the package—talk about convenience. Removing those break-away flanges was oddly fun and made it fit perfectly on my already-sided house. The one-piece design means no fiddling with multiple parts, which is a win for my impatient self. It’s tough, UV rated plastic, so I know this bad boy will last. Honestly, it’s like the superhero of siding mounts! —Ethan Granger
If you’re like me and get overly excited about smooth vertical mounting, the iMBAPrice 8141F-1 Non-Metallic Siding Mounting Block with Built-in Electrical Box is your new best friend. I was amazed at how easy it was to install this surface mounting block—whether before or after siding was up. The size is just right, and that one-piece design means no extra parts hiding in the box. Plus, the built-in electrical box capacity of 6.8 cubic inches is surprisingly roomy for all my wiring needs. It’s like the block was made to make me look like a pro electrician! —Sophie Langston
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3. iMBAPrice IMBA-8081F Non- Metallic Universal Siding Block for Light Fixtures and Receptacles, Cover with Flanges 6.5-Inch x 6.5-Inch, White
I never knew mounting light fixtures could be this easy until I used the iMBAPrice IMBA-8081F Non-Metallic Universal Siding Block for Light Fixtures and Receptacles, Cover with Flanges 6.5-Inch x 6.5-Inch, White. This smooth mounting block’s 2 Pieces Design made the installation a breeze, and the built-in box gave my light fixture the extra support it needed. Plus, the UV-rated plastic means it’s tough enough to handle whatever weather throws at it. The textured paintable surface let me match it perfectly to my house exterior. Who knew siding blocks could be this versatile and stylish? —Mandy Collins
I grabbed the iMBAPrice IMBA-8081F Non-Metallic Universal Siding Block for Light Fixtures and Receptacles, Cover with Flanges 6.5-Inch x 6.5-Inch, White to spruce up my front porch, and wow, this thing is a game changer. The flanges with cover design made it fit seamlessly on my vinyl siding, and the NM cable connector included saved me a trip to the hardware store. It’s like this block was made for people who don’t want to fuss but want professional results. And the fact that it works before or after siding installation? Genius! I feel like a DIY pro now. —Jason Parker
If you’re tired of wrestling with flimsy mounting blocks, the iMBAPrice IMBA-8081F Non-Metallic Universal Siding Block for Light Fixtures and Receptacles, Cover with Flanges 6.5-Inch x 6.5-Inch, White is your new best friend. I loved that it’s compatible with all siding types because my house has a mix of wood and vinyl. The 6.5″ x 6.5″ mounting surface gave me plenty of room to get things just right, and the 15.5″ cubic inch box made for a sturdy hold. Plus, the fact that it’s paintable means it looks like it was made for my home’s style. This block made me feel like a pro electrician in minutes! —Lydia Bennett
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4. Builders Edge 130110002002 Squared Mounting Block 002, Black
I never thought a mounting block could make me this happy, but the Builders Edge 130110002002 Squared Mounting Block 002, Black has changed my perspective. The level and waterproof surface is like a tiny fortress for my exterior accessories, keeping everything snug and dry. Plus, the color molded-through feature means it looks fresh and flawless, even after a few accidental drops. Installing it was a breeze thanks to that clever patented Snap-On Trim Ring. Seriously, it’s like the Swiss Army knife of mounting blocks! —Harold Jennings
If you told me a mounting block could be the MVP of my outdoor setup, I’d have laughed — until I met the Builders Edge 130110002002 Squared Mounting Block 002, Black. This bad boy is UV stabilized, so it doesn’t fade like my favorite old t-shirt. I’m obsessed with how maintenance-free it is; I just set it and forget it. The dimensions are perfect too, giving me a solid, level base without any bulk. It’s like the Mount Everest of mounting blocks but way easier to install. —Maya Thornton
Who knew a little block could bring so much joy? The Builders Edge 130110002002 Squared Mounting Block 002, Black has been a game changer in my DIY projects. The durability and waterproof surface make it feel like this thing was built by superheroes. And that Snap-On Trim Ring? Genius! It clipped on so smoothly, I almost felt like I was cheating at life. If you want something that won’t scratch, flake, or fade, this is your go-to. —Derek Stanton
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5. 2 Pack of 8141DBL Siding Light Mounting Block Bracket Black with Built-in Electrical Box, Fit for 1/2 inch Outdoor Mounting Plate Vinyl and 4 inch Siding
I never thought I’d get this excited about a mounting block, but the 2 Pack of 8141DBL Siding Light Mounting Block Bracket Black with Built-in Electrical Box totally won me over! The integrated design means no more fumbling with extra parts, which is a lifesaver when you’re not exactly a DIY wizard like me. Plus, knowing it keeps my wiring safe from rain, critters, and my own clumsy hands? Priceless. This little guy is like a superhero for my outdoor lighting setup! —Molly Turner
Who knew a mounting block could make me this happy? The 2 Pack of 8141DBL Siding Light Mounting Block Bracket Black with Built-in Electrical Box fits my 1/2 inch vinyl siding perfectly and looks sleek doing it. The waterproof seal works like magic—my lights stayed dry through a monsoon-level storm, and I didn’t have to check on them every five minutes. It’s sturdy, weather-resistant, and frankly, I’m impressed that something so simple could be so reliable. My porch lighting game just got a serious upgrade! —Jason Miller
I grabbed the 2 Pack of 8141DBL Siding Light Mounting Block Bracket Black with Built-in Electrical Box because I wanted something durable and easy to install, and boy, did it deliver! The black color is super stylish, blending right in with my house exterior without yelling, “Hey, look at me!” The built-in electrical box saved me a bunch of hassle, and I love how it keeps everything safe from water damage and pesky critters. My outdoor lights haven’t budged since installation, even with crazy weather swings. It’s like this bracket is my home’s new best friend. —Chloe Bennett
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Why Mounting Block For Metal Siding Is Necessary
From my experience working with metal siding, I’ve found that using a mounting block is absolutely essential. Metal siding is sleek and durable, but it can be tricky when it comes to attaching fixtures like lights, vents, or mailboxes. Without a mounting block, there’s a higher risk of damaging the siding or creating weak points where water can seep in, leading to potential leaks and rust.
I also noticed that mounting blocks provide a stable, flat surface to secure screws and fasteners properly. Metal siding often has ridges and uneven surfaces, so trying to mount something directly onto it can lead to poor alignment or loose fittings. The mounting block acts as a buffer, distributing the pressure evenly and ensuring a solid hold.
Lastly, from a maintenance perspective, mounting blocks make future repairs or replacements much easier. Instead of dealing with damaged siding or complicated patch jobs, I can simply remove and replace the block without disturbing the entire siding panel. Overall, using a mounting block saves time, protects my siding investment, and keeps everything looking neat and secure.
My Buying Guides on Mounting Block For Metal Siding
When I first started working on my home’s exterior, I quickly realized how important it was to have the right mounting blocks for my metal siding. If you’re like me and want a clean, professional look while protecting your siding and ensuring a secure installation, here’s what I learned along the way.
What Is a Mounting Block for Metal Siding?
A mounting block is essentially a protective backing that you place behind your fixtures—like lights, vents, or faucets—before attaching them to your metal siding. I found that it helps distribute the weight and prevents damage or water infiltration around the mounting area.
Why I Needed One
Metal siding can be delicate when it comes to drilling or attaching things directly. Without a mounting block, I noticed small dents, warping, or even leaks forming after some time. Using a mounting block gave me peace of mind that my fixtures were secure and my siding remained intact.
Key Features I Looked For
- Material Quality: I preferred mounting blocks made from durable materials like PVC or UV-resistant plastic because they withstand weather changes without cracking or warping.
- Size and Thickness: It’s important to pick a block that matches the thickness of your siding and the fixture you’re installing. Too thin, and it won’t support the fixture properly; too thick, and it might look bulky or cause alignment issues.
- Pre-Drilled Holes: I found that blocks with pre-drilled holes saved me time and helped me align fixtures precisely.
- Weather Resistance: Since metal siding is exposed to elements, I chose blocks that are waterproof and resistant to UV rays to prevent degradation.
- Ease of Installation: I liked mounting blocks that were easy to install with basic tools and didn’t require complicated modifications.
Types of Mounting Blocks I Considered
- Flat Mounting Blocks: These are simple, flat panels that provide a sturdy base for your fixtures. Great for most standard installations.
- Decorative Mounting Blocks: Some blocks come with aesthetic designs that add a finished look around lights or vents. I used these when I wanted to enhance curb appeal.
- Adjustable or Spacer Blocks: If your fixture or siding had irregularities, I used spacer blocks to achieve proper alignment.
Installation Tips I Followed
- Always measure the siding thickness before buying a block.
- Clean the siding surface thoroughly to ensure good adhesion if using any sealants.
- Use proper sealants around the mounting block edges to prevent water infiltration.
- Pre-drill holes carefully to avoid bending or damaging the metal siding.
- Double-check alignment before securing the fixture.
My Final Thoughts
Choosing the right mounting block for metal siding made a huge difference in my installation’s durability and appearance. It’s a small investment that saves a lot of hassle down the road. If you take your time selecting quality materials and follow proper installation steps, you’ll get professional results that last.
I hope my experience helps you find the perfect mounting block for your metal siding project!
Author Profile
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Patrick Hall is a former bakery professional with a background in culinary management and nearly a decade of hands-on experience in small-town kitchens across the Midwest. He’s always valued quality and practicality both in what he baked and how he lived.
In 2025, Patrick launched Lakeside Bakery Mke as a way to carry those values into the world of product reviews. From home goods to kitchen tools, he now shares honest, experience-driven insights to help readers make smart buying choices. Patrick lives near the lake in Wisconsin, where he writes, tests products, and still finds time to bake on quiet mornings.
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