---
product_id: 334455984
title: "M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing"
brand: "m-d building products"
price: "R68"
currency: ZAR
in_stock: true
reviews_count: 5
url: https://www.desertcart.co.za/products/334455984-m-d-building-products-71550-versatile-caulk-backer-rod-set
store_origin: ZA
region: South Africa
---

# 3/8 inch perfect gap size weather-resistant durability 350ft continuous foam rod M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing

**Brand:** m-d building products
**Price:** R68
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal smart, live comfortable — the pro’s choice for flawless finishes!

## Quick Answers

- **What is this?** M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing by m-d building products
- **How much does it cost?** R68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/334455984-m-d-building-products-71550-versatile-caulk-backer-rod-set)

## 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

- • **Multi-Use Mastery:** Ideal for windows, doors, roofs, and concrete joints—upgrade your home’s airtightness and insulation.
- • **Seamless Gap Filler:** 350 feet of high-density foam ensures uninterrupted, precise sealing for any project size.
- • **Perfect Fit Every Time:** 3/8 inch diameter designed for optimal compression and secure caulking adhesion.
- • **Effortless Installation:** Simply push into joints—no adhesives or mess, just snug, reliable sealing.
- • **Built to Brave the Elements:** Weather-resistant material keeps your home draft-free and protected year-round.

## Overview

The M-D Building Products 71550 Versatile Caulk Backer Rod Set offers 350 feet of durable, weather-resistant 3/8 inch foam rod designed to fill gaps and joints for superior caulking adhesion. Easy to install and perfect for a wide range of sealing and insulating applications, it prevents drafts, dust, and moisture infiltration, ensuring long-lasting protection and enhanced home comfort.

## Description

M-D Building products 71550 - Versatile Caulk Backer Rod Set 3/8in X 350ft PRO Pack - Essential Foam Rods for Precise Caulking and Sealing 3/8in X 350ft

Review: Good price for the quality of the product. Did the job.
Review: We used this when installing engineered hardwood in our home. Functional, easy to use, and a great value. Would recommend!

## Features

- HIGH QUALITY MATERIAL: This Caulk Backer Rod is made of high quality material that is long lasting, durable and weather resistant. Our product can effectively fill large gaps between surfaces to prevent drafts, bugss, dust and pollen from entering your home.
- CONCRETE GAP FILLING: Our product is an excellent choice for filling areas with concrete to ensure a sound surface for caulking projects. Use this rod to fill joints between two surfaces that allows caulking to securely hold in place and lasts longer.
- WIDE RANGE OF USES: Whether you’re fixing a leaky roof, window sill or drafty door; the Caulk Backer Rod can handle the job! In addition to sealing gaps between surfaces, it’s also great for insulating and improving air tightness as well as damp proofing your home.
- EASY TO USE: Installation is easy with a simple push into most joint openings until it's snugly fitted. After installation caulk can be applied on top of the backer rod for an extra secure seal without the use of messy sealants or adhesives.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00C1TGKO8 |
| ASIN  | B00C1TGKO8 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #159,275 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #168 in Caulk |
| Color | Gray |
| Customer Reviews | 4.7 4.7 out of 5 stars (29) |
| Customer reviews | 4.7 4.7 out of 5 stars (29) |
| Date First Available | 7 June 2013 |
| Date First Available  | 7 June 2013 |
| Department  | Unisex-Adult |
| Included components | M-D Building products 71550 - Versatile Caulk Backer Rod Set 3/8in X 350ft PRO Pack - Essential Foam Rods for Precise Caulking and Sealing 3/8in X 350ft |
| Item Package Quantity | 1 |
| Item Weight | 454 g |
| Item model number | MD Building - 71550 |
| Item model number  | MD Building - 71550 |
| Manufacturer | M-D Building Products |
| Manufacturer  | M-D Building Products |
| Material | Plastic |
| Number Of Pieces | 1 |
| Part number | 71550 |
| Product Dimensions | 25.4 x 27.94 x 30.48 cm; 453.59 g |
| Product Dimensions  | 25.4 x 27.94 x 30.48 cm; 453.59 g |
| Size | 350 Ft. |

## Product Details

- **Brand:** M-D Building Products
- **Colour:** Gray
- **Item form:** Foam
- **Item weight:** 1 Pounds
- **Surface recommendation:** Door

## Images

![M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing - Image 1](https://m.media-amazon.com/images/I/61bhNB8Z9UL.jpg)
![M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing - Image 2](https://m.media-amazon.com/images/I/71JiZXfhw2L.jpg)
![M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing - Image 3](https://m.media-amazon.com/images/I/71o8z5W50WL.jpg)
![M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing - Image 4](https://m.media-amazon.com/images/I/81-xBTntOuL.jpg)
![M-D Building Products 71550 - Versatile Caulk Backer Rod Set 3/8in x 350ft - Essential Foam Rods for Precise Caulking and Sealing - Image 5](https://m.media-amazon.com/images/I/818J6gOM3ZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by P***S on 13 June 2018*

Good price for the quality of the product. Did the job.

### ⭐⭐⭐⭐⭐ Review
*by A***Y on 3 January 2025*

We used this when installing engineered hardwood in our home. Functional, easy to use, and a great value. Would recommend!

### ⭐⭐⭐⭐⭐ Review
*by S***D on 13 April 2024*

Was too big for my gap between the basement floor and the walls. I just cut it in half and it worked great, saving lots of self leveling caulk. Sure didn’t need 300 feet like I thought, but could have used it on my last driveway project.

## Frequently Bought Together

- M-D Building Products - Versatile Gray Foam Backer Rod - Set 3/8in x 350ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71550)
- M-D Building Products 71480 1/2-Inch by 20-Feet Backer Rod, Gray
- M-D Building Products - Versatile Gray Foam Backer Rod - Set 5/8in x 150ft - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling (71552)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-08*