---
product_id: 4320311
title: "Versatile Gray Foam Backer Rod - Set 5/8in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71506)"
brand: "m-d building products"
price: "€ 10.14"
currency: EUR
in_stock: true
reviews_count: 13
category: "M D Building Products"
url: https://www.desertcart.fr/products/4320311-versatile-gray-foam-backer-rod-set-5-8in-x-20ft
store_origin: FR
region: France
---

# Easily trimmed to size Weather-resistant durability 5/8in x 20ft foam rod Versatile Gray Foam Backer Rod - Set 5/8in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71506)

**Brand:** m-d building products
**Price:** € 10.14
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal Smart, Save Big: The Ultimate Gap-Filling Gamechanger

## Quick Answers

- **What is this?** Versatile Gray Foam Backer Rod - Set 5/8in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71506) by m-d building products
- **How much does it cost?** € 10.14 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/4320311-versatile-gray-foam-backer-rod-set-5-8in-x-20ft)

## Best For

- m-d building products enthusiasts

## Why This Product

- Trusted m-d building products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Installation:** Push-in design means no messy adhesives—seal faster, smarter.
- • **Multi-Use Home Essential:** Ideal for concrete, expansion joints, drafty doors, and more—your all-in-one caulk saver.
- • **Precision Fit, Every Time:** Snugly fills medium gaps for airtight, dust-proof seals.
- • **Built to Brave the Elements:** Weather-resistant foam ensures long-lasting outdoor and indoor performance.
- • **Cut-to-Perfection Versatility:** Trim or twist to customize for any joint or crack size effortlessly.

## Overview

The Versatile Gray Foam Backer Rod (5/8in x 20ft) by M-D Building Products is a durable, weather-resistant foam solution designed to fill and seal medium gaps in concrete, expansion joints, and cracks. Its easy-to-install, trim-to-fit design enhances caulking adhesion, improves airtightness, and protects against drafts and moisture, making it an essential tool for both indoor and outdoor weatherization projects.

## Description

desertcart.com: M-D Building Products - Versatile Gray Foam Backer Rod - Set 5/8in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71506) : Industrial & Scientific

Review: Good product - Works very well for what I need.
Review: Great price. - Works great!

## Features

- Quality Construction: This gap filler is made from high-quality, weather-resistant materials, ensuring long-lasting durability and performance. It effectively seals medium gaps between surfaces, preventing drafts and dust from entering your home. Suitable for both indoor and outdoor use, it withstands various weather conditions, providing consistent protection and improved comfort.
- Concrete Gap Filling Excellence: Our product excels in filling concrete gaps, creating a strong foundation for caulking projects. Utilize this foam to effectively fill joints between surfaces, ensuring dependable adhesion for caulking applications that promise enduring durability and resilience.
- Complete Gap Solution: This product provides versatile gap filling, preventing drafts and offering a sturdy base for caulking. Perfect for expansion joints in driveways and sidewalks, it can be twisted for larger gaps and easily trimmed with scissors to the desired size.
- Effortless Installation: Enjoy a hassle-free setup by effortlessly pushing the backer rod into most joint openings until it fits snugly. Once installed, enhance the seal further by applying caulk on top—no need for messy sealants or adhesives.
- Versatile Application: From repairing leaky roofs and window sills to addressing drafty doors, the Backer Rod is your go-to solution! Beyond sealing surface gaps, it excels in insulating, enhancing airtightness, and damp-proofing your home—offering multifaceted benefits for various household needs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQP1D4 |
| Best Sellers Rank | #16,939 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #53 in Hardware Sealers |
| Brand | M-D Building Products |
| Color | Gray |
| Date First Available | June 15, 2006 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00043374715064 |
| Is Discontinued By Manufacturer | No |
| Item Form | Foam |
| Item Weight | 1.76 ounces |
| Item model number | MD Building - 71506 |
| Manufacturer | M-D Building Products |
| Material | Plastic |
| Number of Items | 1 |
| Product Dimensions | 240 x 0.63 x 0.63 inches |
| Surface Recommendation | Door |
| UPC | 043374715064 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** M-D Building Products
- **Color:** Gray
- **Item Form:** Foam
- **Item Weight:** 0.11 Pounds
- **Surface Recommendation:** Door

## Images

![Versatile Gray Foam Backer Rod - Set 5/8in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71506) - Image 1](https://m.media-amazon.com/images/I/61HHJ4QXlvL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: This will seem like a bizarre question, but does it smell? (Like the majority of Chinese-made closed cell foam materials.)**
A: I use it for taxidermy purposes and havent noticed any smell.

**Q: Is product gray or black?**
A: Mine was Gray...

**Q: Can i use that to repair my garage floor cracks with the concrete caulk?**
A: I wouldn’t. It’s just foam. If the crack is huge I would use sand as a filler and apply a deep layer of concrete patch

**Q: does this break down or come apart easily when wet?**
A: No. Its foam.. it doesnt break down at all

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by C***A on October 8, 2025*

Works very well for what I need.

### ⭐⭐⭐⭐⭐ Great price.
*by M***Y on October 23, 2025*

Works great!

### ⭐⭐⭐⭐⭐ Gray Foam
*by R***I on November 13, 2025*

Works as advertised, Gray Foam :)

## Frequently Bought Together

- M-D Building Products - Versatile Gray Foam Backer Rod - Set 5/8in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71506)
- M-D Building Products - Versatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 3/8 by 20 Feet, (Pack of 2) (71464)
- M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-17*