---
product_id: 77420348
title: "M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480"
brand: "m-d building products"
price: "S/.181"
currency: PEN
in_stock: true
url: https://www.desertcart.pe/products/77420348-m-d-products-50in-x-20ft-backer-rod-for-gaps
store_origin: PE
region: Peru
---

# 20ft length covers extensive projects 0.5in diameter for precise gap filling Closed-cell polyethylene for moisture resistance M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480

**Brand:** m-d building products
**Price:** S/.181
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smart, save time – the pro’s secret to flawless finishes!

## Quick Answers

- **What is this?** M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480 by m-d building products
- **How much does it cost?** S/.181 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/77420348-m-d-products-50in-x-20ft-backer-rod-for-gaps)

## 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

- • **Extended Reach:** Generous 20ft length ensures you have enough material for large or multiple projects.
- • **Easy Customization:** Twist multiple strands together to fill wider gaps effortlessly.
- • **Seamless Gap Filler:** Perfectly sized 0.5in diameter to tackle cracks and joints with precision.
- • **Versatile Application:** Ideal for pavement cracks, wall joints, foundations, sidewalks, and driveways.
- • **Moisture-Resistant Shield:** Closed-cell polyethylene construction prevents water absorption and damage.

## Overview

M-D Products 0.5in x 20ft Backer Rod is a durable, closed-cell polyethylene filler designed to cushion and insulate gaps in pavement cracks, wall joints, foundations, sidewalks, and driveways. Its non-absorbent, gray finish material prevents moisture intrusion and supports professional-grade caulking for long-lasting weatherization.

## Description

Before caulking use the Caulk Backer Rod to help fill gaps and openings in pavement cracks wall joints foundations sidewalks and driveways. The backer rod helps cushion and insulate and helps prevent 3-point bonding.Features. Fills gaps and openings in pavement cracks wall joints foundations sidewalks and driveways.. Non-absorbent closed-cell polyethylene pre-caulking material.. Twist multiple strands together to fill large cracks gaps.. Gray finish.. Size - 0.5 in. x 20 ft.

## Features

- Fills gaps and openings in pavement cracks, wall joints, foundations, sidewalks and driveways.
- Non-absorbent, closed-cell polyethylene pre-caulking material.
- Twist multiple strands together to fill large cracks, gaps.
- Gray finish.
- Size - 0.5 in. x 20 ft.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | M D Building Products |
| Part number | 71480 |
| Item Weight | 9.07 g |
| Product Dimensions | 30.48 x 22.23 x 5.08 cm; 9.07 g |
| Item model number | 71480 |
| Size | 20 Ft. |
| Colour | Gray |
| Material | Polyethylene (PE) |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Colour:** Gray
- **Brand:** M-D Building Products
- **Item weight:** 0.02 Pounds
- **Item form:** Paste
- **Maximum gap fill:** 0.5 Inches

## Images

![M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480 - Image 1](https://m.media-amazon.com/images/I/61UnawlcwQL.jpg)
![M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480 - Image 2](https://m.media-amazon.com/images/I/81JSrbnZQ5L.jpg)
![M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480 - Image 3](https://m.media-amazon.com/images/I/818J6gOM3ZL.jpg)
![M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480 - Image 4](https://m.media-amazon.com/images/I/81Py1S2524L.jpg)
![M-d Products .50in. X 20ft. Backer Rod For Gaps & Joints 71480 - Image 5](https://m.media-amazon.com/images/I/81-xBTntOuL.jpg)

## Available Options

This product comes in different **Size Name** 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 Peru*
*Store origin: PE*
*Last updated: 2026-01-23*