---
product_id: 216485030
title: "M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray"
brand: "m-d building products"
price: "S$57"
currency: SGD
in_stock: true
category: "M D Building Products"
url: https://www.desertcart.sg/products/216485030-m-d-building-products-71480-1-2-inch-by-20
store_origin: SG
region: Singapore
---

# 0.5-inch max gap fill Easily trims with scissors Waterproof & weather-resistant M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray

**Brand:** m-d building products
**Price:** S$57
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with confidence—comfort and durability in every inch!

## Quick Answers

- **What is this?** M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray by m-d building products
- **How much does it cost?** S$57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/216485030-m-d-building-products-71480-1-2-inch-by-20)

## 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

- • **Built to Last:** Crafted from premium closed-cell foam that withstands harsh weather indoors and out.
- • **Seal Like a Pro:** Effortlessly blocks drafts, moisture, dust, and insects for a cozier, cleaner space.
- • **Versatile Home Hero:** Ideal for driveways, sidewalks, windows, doors, and roofs—your all-in-one gap solution.
- • **Perfect Fit Every Time:** Flexible 20-foot roll that twists or trims to seal medium gaps up to 1/2 inch wide.
- • **Caulk Smarter, Not Harder:** Creates a sturdy base to prevent caulk waste and ensure long-lasting adhesion.

## Overview

The M-D Building Products 71480 Backer Rod is a 1/2-inch thick, 20-foot long closed-cell foam roll designed to fill medium gaps indoors and outdoors. Waterproof and weather-resistant, it prevents drafts, moisture, dust, and insects while providing a reliable base for caulking. Easy to cut and install, it enhances insulation and durability across various home improvement projects.

## Description

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

## 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 | B000BQWOC0 |
| Best Sellers Rank | #143,492 in Home Improvement ( See Top 100 in Home Improvement ) #1,302 in Weather Stripping |
| Brand Name | M-D Building Products |
| Colour | Gray |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,686) |
| Global Trade Identification Number | 00043374714807 |
| Included Components | 1 Foam Backer Rod Roll |
| Item Form | Foam |
| Item Highlight | Closed-Cell Foam, Prevents Caulk Waste, Cuts With Scissors, Blocks Drafts Moisture Dust Insects, Indoor/Outdoor |
| Item Weight | 9 g |
| Manufacturer | M-D Building Products |
| Manufacturer Part Number | 71480 |
| Material Type | Foam |
| Maximum Gap Fill | 0.5 Inches |
| Model | 71480 |
| Number of Items | 1 |
| Number of Packs | 1 |
| 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

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

## Available Options

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

## 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.

## 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 Singapore*
*Store origin: SG*
*Last updated: 2026-10-16*