---
product_id: 256128197
title: "71480 1/2-Inch by 20-Feet Backer Rod,"
brand: "m-d building products"
price: "€ 27.98"
currency: EUR
in_stock: true
reviews_count: 5
category: "M D Building Products"
url: https://www.desertcart.hr/products/256128197-71480-1-2-inch-by-20-feet-backer-rod
store_origin: HR
region: Croatia
---

# Waterproof polyethylene foam 0.5-inch max gap fill 20 feet length for large projects 71480 1/2-Inch by 20-Feet Backer Rod,

**Brand:** m-d building products
**Price:** € 27.98
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smarter, not harder — the pro’s secret to flawless finishes!

## Quick Answers

- **What is this?** 71480 1/2-Inch by 20-Feet Backer Rod, by m-d building products
- **How much does it cost?** € 27.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/256128197-71480-1-2-inch-by-20-feet-backer-rod)

## 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

- • **Seal Like a Pro:** Effortlessly fills gaps up to 1/2 inch, blocking drafts and boosting insulation.
- • **Easy Application:** Flexible foam design makes installation quick and hassle-free, saving you time.
- • **Project-Ready Length:** 20 feet of durable backer rod ensures you have enough material for any job size.
- • **Waterproof & Durable:** Made from resilient polyethylene foam that resists moisture and lasts long.
- • **Smooth Caulking Surface:** Creates the perfect base for caulk, enhancing adhesion and finish quality.

## Overview

The M-D Building Products 71480 Backer Rod is a 1/2-inch thick, 20-foot long polyethylene foam rod designed to fill large gaps before caulking. Waterproof and easy to use, it provides a reliable, smooth surface for caulking projects, preventing drafts and improving insulation. Trusted by thousands with a 4.6-star rating, it’s a must-have for professional-grade weatherization and finishing.

## Description

M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray

Review: Quality is Good but cost is too much - Cost is too much.. Similar products are available in lowest prices..
Review: Perfect for Packing Large Gaps Before Caulking - Really happy with this foam backer rod. It arrived right on time and in perfect condition, no damage at all to the packaging. Works exactly as described and made packing large gaps before caulking so much easier. Great quality material and easy to use. Would definitely buy again for future projects.

## Features

- The product is 1/2"x20' Caulk Back Rod
- Easy to use
- The product is manufactured in China
- Fills large gaps and openings to prevent drafts
- Provides a sound surface for caulking projects

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BQWOC0 |
| Best Sellers Rank | #67,894 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #149 in Raw Building Materials |
| Brand | M-D Building Products |
| Brand Name | M-D Building Products |
| Color | Gray |
| Colour | Gray |
| Customer Reviews | 4.6 out of 5 stars 3,781 Reviews |
| Global Trade Identification Number | 00043374714807 |
| Item Form | Foam |
| Item Type Name | Backer Rod |
| Item Weight | 9 g |
| Item form | Foam |
| Item weight | 9 g |
| Manufacturer | M-D Building Products |
| Material Type | Polyethylene (PE) |
| Maximum Gap Fill | 0.5 Inches |
| Maximum gap fill | 0.5 Inches |
| Model | 71480 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 71480 |
| Surface Recommendation | wall |
| Surface recommendation | wall |
| UPC | 043374714807 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** M-D Building Products
- **Colour:** Gray
- **Item form:** Foam
- **Item weight:** 9 g
- **Maximum gap fill:** 0.5 Inches

## Images

![71480 1/2-Inch by 20-Feet Backer Rod, - Image 1](https://m.media-amazon.com/images/I/61UnawlcwQL.jpg)

## Questions & Answers

**Q: Is it safe to use near hot water baseboard radiators? I want to use it behind radiator cover as a temporary fix for a cold draft.**
A: I suspect it would be safe if between the wall and the top cover of the baseboard, assuming you have standard baseboard covers like mine -- which never get super hot. It's foam, and will likely melt if too close to a heat source. To be on the safe side, I'd suggest first contacting the company directly.

**Q: Can you use barge glue and plastidip**
A: Call the manufacturer

**Q: I live in an apartment and i feel a draft coming through the cracks of my window would this help? Im trying to avoid using weather tape**
A: I purchased the medium backer rod and they are 1/2" thick. I think the one I purchased would be too thick to insert into the crack of your windows.  Maybe there is a smaller version that would work for you.

**Q: What caulking do u need for this ?**
A: I did use caulk as it was used to support a garage door seal as the bottom of the door.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality is Good but cost is too much
*by R***I on 23 November 2018*

Cost is too much.. Similar products are available in lowest prices..

### ⭐⭐⭐⭐⭐ Perfect for Packing Large Gaps Before Caulking
*by A***S on 7 August 2026*

Really happy with this foam backer rod. It arrived right on time and in perfect condition, no damage at all to the packaging. Works exactly as described and made packing large gaps before caulking so much easier. Great quality material and easy to use. Would definitely buy again for future projects.

### ⭐⭐⭐⭐⭐ just what I expected.
*by R***Z on 12 May 2026*

Ideal solution for one of my projects. Happy to find higher volume package at good price. M-D Building Products came through yet again for me.

## Frequently Bought Together

- M-D Building Products - Versatile Gray Foam Backer Rod Set 1/2in x 20ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71480)
- 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)
- Sikaflex Self Leveling Sealant, Gray, polyurethane with an accelerated curing capacity for sealing horizontal expansion joints in concrete, 10.1 fl. oz Cartridge

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-10-03*