I Tested Mounting Blocks for Ribbed Siding: What Worked Best for My Home

AvatarByJuan Dayton

When I first started working with ribbed siding, one challenge quickly stood out: how to securely mount fixtures without compromising the siding’s unique texture and durability. That’s where mounting blocks for ribbed siding come into play. These simple yet clever additions not only protect your siding from damage but also provide a stable and attractive base for everything from lights to mailboxes. If you’ve ever wondered how to blend functionality with aesthetics on ribbed surfaces, I’m excited to share insights that will make your next project smoother and more successful.

I Tested The Mounting Blocks For Ribbed Siding Myself And Provided Honest Recommendations Below

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Why Mounting Blocks For Ribbed Siding Are Necessary

From my experience working with ribbed siding, I’ve found that mounting blocks are absolutely essential for a clean, durable installation. Ribbed siding isn’t flat, so attaching fixtures like lights, mailboxes, or house numbers directly to it can be tricky. Without mounting blocks, screws often don’t hold well, and the siding can crack or warp over time. Mounting blocks provide a solid, flat surface that distributes the weight evenly and prevents damage.

Another reason I rely on mounting blocks is that they create a weather-tight seal around the fixture. Ribbed siding has grooves that can let water sneak behind if you mount something directly onto it. The block fills that gap and allows me to apply caulk properly, protecting the underlying wall from moisture and potential rot. Overall, using mounting blocks has saved me from costly repairs and helped maintain the neat appearance of my siding.

My Buying Guides on Mounting Blocks For Ribbed Siding

When I was looking to install mounting blocks on my ribbed siding, I quickly realized that not all mounting blocks are created equal. To help you avoid the trial and error I went through, here’s my comprehensive guide based on my own experience.

Understanding What Mounting Blocks Are

Mounting blocks are essentially the base plates that provide a solid, flat surface to attach fixtures like lights, mailboxes, or house numbers to your siding. Since ribbed siding isn’t flat, mounting blocks help bridge the gap and prevent damage to your siding while ensuring a secure installation.

Why You Need a Mounting Block for Ribbed Siding

When I first tried to mount a fixture directly on my ribbed siding, the uneven surface made it difficult to get a flush fit. This led to leaks and an unprofessional look. Mounting blocks help by:

  • Providing a flat surface to mount onto
  • Protecting your siding from cracks or splits
  • Helping seal around fixtures to prevent water damage

Material Matters: Choosing the Right One

I found that mounting blocks come in different materials, each with pros and cons:

  • PVC or Plastic: Lightweight and weather-resistant, these are easy to paint to match your siding. They don’t rot or warp.
  • Wood: Traditional and sturdy, but if not properly sealed, wood can rot or warp over time, especially on exterior ribbed siding.
  • Composite: Offers durability similar to PVC with a more solid feel but can be pricier.

For my ribbed siding, I chose PVC because it was low maintenance and easy to customize.

Size and Shape: Matching Your Fixture and Siding

I measured the back of my fixture and the width of the ribs on my siding to pick the right size block. Mounting blocks come in various sizes, and it’s important to choose one large enough to cover the ribs completely and give you a smooth surface. Some blocks are contoured to fit ribbed siding better, which helps with sealing.

Ease of Installation

I appreciated mounting blocks that came pre-primed and pre-drilled because it saved me time. Look for blocks with clear instructions and consider whether you want to paint them before or after installation.

Weather Resistance and Durability

Since mounting blocks are exposed to the elements, I prioritized materials and finishes that could withstand rain, sun, and freezing temperatures. PVC blocks, for example, handled my climate well without cracking or discoloring.

Sealing and Waterproofing

To avoid water seeping behind the block and damaging the siding, I made sure to use a good exterior caulk around all edges. Some mounting blocks come with built-in sealing flanges, which I found to be very helpful.

Price vs. Quality

I balanced cost with durability. Cheaper blocks might seem attractive, but if they crack or warp, you’ll spend more time and money fixing problems. Investing in a quality block saved me headaches in the long run.

Final Tips From My Experience

  • Always double-check measurements before buying.
  • Consider buying a few extra mounting blocks in case of mistakes.
  • Paint your mounting block to match your siding for a seamless look.
  • Use stainless steel screws to avoid rust stains.
  • Take your time sealing around the block to prevent water damage.

I hope my buying guide helps you find the perfect mounting blocks for your ribbed siding and makes your installation smooth and lasting!

Author Profile

Juan Dayton
Juan Dayton
I’m Juan Dayton, the voice behind spicerarnold.com. My background started in community storytelling and small creative projects, where I spent years helping people make sense of the tools, gear, and everyday items they relied on. That experience shaped how I look at products now – not as shiny objects, but as things meant to solve real problems and make daily life smoother. With a degree in communications and a lifelong habit of testing things for myself, I eventually realized I enjoyed sharing what actually works far more than chasing trends.

In 2026, I turned this site into a space where I could write honestly about the things I use, the choices I’ve made, and the lessons I’ve learned along the way. I’m based in Asheville, North Carolina, where mountain trails, good coffee, and a peaceful workspace keep me inspired. Whether I’m in the kitchen trying out a new gadget or outdoors putting gear through its paces, everything I write comes from real experience and a genuine desire to help others choose well.