---
product_id: 56939597
title: "M-D Building Products - Versatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 10 Feet, Black (19100)"
brand: "m-d building products"
price: "C$1536"
currency: NIO
in_stock: true
url: https://www.desertcart.ni/products/56939597-m-d-building-products-versatile-gray-foam-backer-rod-essential
store_origin: NI
region: Nicaragua
---

# Easily trimmed to fit any joint size Weather-resistant for indoor/outdoor use 0.38 in thickness for perfect gap fill M-D Building Products - Versatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 10 Feet, Black (19100)

**Brand:** m-d building products
**Price:** C$1536
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal smart, save energy, and never let a draft win!

## Quick Answers

- **What is this?** M-D Building Products - Versatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 10 Feet, Black (19100) by m-d building products
- **How much does it cost?** C$1536 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/56939597-m-d-building-products-versatile-gray-foam-backer-rod-essential)

## 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

- • **Versatile Use Cases:** Ideal for concrete joints, expansion gaps, drafty doors, and leaky windows
- • **Precision Gap Filler:** Snug 0.38-inch thickness seals medium gaps flawlessly
- • **Custom Fit Every Time:** Trim or twist to size for a tailored seal that boosts insulation and comfort
- • **All-Weather Durability:** Built to withstand rain, sun, and temperature swings without losing integrity
- • **Effortless Installation:** Push-in design means no adhesives or mess—get the job done fast

## Overview

The M-D Building Products Versatile Gray Foam Backer Rod is a 10-foot, 0.38-inch thick, weather-resistant foam designed to fill and seal medium gaps in concrete, expansion joints, and cracks. Its easy-to-install, trim-to-fit design ensures a durable, airtight seal that enhances insulation and protects against drafts and moisture, making it an essential caulk saver for both indoor and outdoor weatherproofing projects.

## Description

M-D Building Products - Versatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 10 Feet, Black (19100)

## 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 |
|---------------|-------|
| Item Thickness | 0.38 Inches |
| Item Dimensions L x W | 5.2"L x 5.2"W |
| Recommended Uses For Product | weatherproofing gaps and joints in buildings |
| Color | Gray |
| Material Type | Plastic |

## Product Details

- **Brand:** M-D Building Products
- **Material:** Foam
- **Color:** Gray
- **Product Dimensions:** 120"L x 1"W
- **Item Thickness:** 0.38 Inches

## Images

![M-D Building Products - Versatile Gray Foam Backer Rod - Essential Caulk Saver for Sealing Concrete Gaps, Expansion Joints, and Crack Filling, 10 Feet, Black (19100) - Image 1](https://m.media-amazon.com/images/I/61HHJ4QXlvL.jpg)

## Available Options

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

## Frequently Bought Together

- M-D Building Products 19100 - Versatile Caulk Backer Rod Set 1in x 10ft - Essential Foam Rods for Precise Caulking and Sealing
- 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)

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**Shop now:** [https://www.desertcart.ni/products/56939597-m-d-building-products-versatile-gray-foam-backer-rod-essential](https://www.desertcart.ni/products/56939597-m-d-building-products-versatile-gray-foam-backer-rod-essential)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-03*