---
product_id: 5047740
title: "1/4\" Closed Cell Backer Rod - 100 ft Roll"
brand: "crl"
price: "฿1362"
currency: THB
in_stock: true
reviews_count: 8
category: "Crl"
url: https://www.desertcart.co.th/products/5047740-1-4-closed-cell-backer-rod-100-ft-roll
store_origin: TH
region: Thailand
---

# 1/4" precise diameter 100 ft continuous roll compatible with all cold-applied sealants 1/4" Closed Cell Backer Rod - 100 ft Roll

**Brand:** crl
**Price:** ฿1362
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smarter, not harder — the pro’s choice for flawless joints!

## Quick Answers

- **What is this?** 1/4" Closed Cell Backer Rod - 100 ft Roll by crl
- **How much does it cost?** ฿1362 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/5047740-1-4-closed-cell-backer-rod-100-ft-roll)

## Best For

- crl enthusiasts

## Why This Product

- Trusted crl brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible Closed-Cell Foam:** Durable polyethylene foam with a resilient exterior skin for lasting joint integrity
- • **Precision Thickness Control:** Ensures optimal sealant depth for professional-grade joints
- • **Cost-Efficient Sealant Usage:** Prevents over-application by limiting sealant depth, saving materials and money
- • **Universal Sealant Compatibility:** Works seamlessly with all cold-applied sealants—no bond breaker needed
- • **Easy Installation, No Adhesion Hassles:** Sealant won’t stick to the rod’s skin, allowing for natural joint movement without stress

## Overview

The C.R. Laurence 1/4" Closed Cell Backer Rod is a 100-foot roll of flexible polyethylene foam designed to control sealant thickness in construction joints. Its closed-cell structure prevents sealant adhesion, allowing for natural expansion and contraction while optimizing sealant use. Compatible with all cold-applied sealants, it ensures durable, cost-effective weatherproofing and joint integrity.

## Description

C.R. LAURENCE EF14C CRL 1/4" Closed Cell Backer Rod - 100" Roll. CRL Closed Cell Backer Rod is a round, flexible, closed cell polyethylene foam with an exterior "skin" used as a backing and thickness control device for elastomeric and other cold-applied sealants. The Backer Rod becomes an integral part of the joint into which it is installed, and therefore is available in a range of diameters to accommodate joints from 3/16" to 1-5/8" (5 to 41 mm). It limits the depth of the sealant, thereby preventing excessive use of the sealant, which promotes proper joint design. Because the sealant will not bond to the "skin" of the rod, it can stretch and recover with joint movement, with minimal stress being put on the points of adhesion to the substrate.. Part Numbers Variations: EF14C

Review: Would back this rod anytime! - Purchased this to put the finishing touches on a garage door trim & molding project. The closed cell backer rod was squeezed in some of the cavities bordering the trim. Cavities, which otherwise, would have required excessive amounts of caulk. Thereafter the cavities were finished with a neat bead of the appropriate caulk. For that purpose, this particular backer rod was perfect. As noted in several other reviews, the backer rod doesn't arrive tightly wound around a spool, but instead stuffed into a box. In that respect, I would suggest that desertcart update the image of the listing on its web-site. I wasn't bothered by it. The item arrived quickly, proved sturdy enough for its intended purpose, and, indeed accomplished its intended purpose perfectly. In comparison with The Home Depot as well as local hardware stores, the price was certainly a positive experience. Make sure of the size (thickness) of backer rod your project(s) will require.
Review: Useful to fill driveway cracks - Used this to fill the bottom of several cracks in my asphalt driveway. Doing this saved a lot of asphalt driveway caulk and fit nicely into the cracks. Caulked over it and so far, so good. It will be interesting to see its performance over the winter.

## Features

- DOES NOT COME ON A SPOOL
- Won't Adhere to Sealants; No Bond Breaker Needed
- Compatible with All Cold-Applied Sealants
- Allows Easy Control of Sealant Application Thickness

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | C.R. Laurence |
| Part Number | EF14C |
| Item Weight | 1.76 ounces |
| Product Dimensions | 1 x 11 x 7 inches |
| Item model number | EF14C |
| Is Discontinued By Manufacturer | No |
| Size | 1/4 Inch |
| Color | Gray |
| Material | solid |
| Shape | shape |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | No_warranty |

## Images

![1/4" Closed Cell Backer Rod - 100 ft Roll - Image 1](https://m.media-amazon.com/images/I/61lK2oIFOyL.jpg)

## Questions & Answers

**Q: Does the backer rod  come on a roll?**
A: I ordered 400 ft of the backer rod. It came loosely rolled in 100 ft. sections in a box, not on a cardboard spool as pictured. The product worked we.

**Q: Can it be removed easily ? I want to use it to fill the grooves that the screws slide into when installing my hurricane shutters.Need to be removable**
A: Not sure exactly what you mean for you usage but I don't see why it wouldn't be. It's not sticky or anything like that so as long as you could still get at it you could remove it. I used to to fill between the logs in my log home and if I wanted to I could go around with and get it back out (though tedious in my case).

**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: If the metal on the radiator is not touching the backer rod, that should be fine. As you may know, this is not insulation, it is a filler for caulking jobs. Having said that, I'm sure it will stop the draft you are having, but it will probably not stop the cold air from getting it.

**Q: Can this be used to fill voids and then pour epoxy over it**
A: It is very time concumming to use as I put it in the expansion joints cut into my new hanger floor.  70x70 with 10ft.cuts takes alot of backer rod. I filled the joint with self levling joint sealer but never epoxied the cement.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Would back this rod anytime!
*by F***S on January 6, 2014*

Purchased this to put the finishing touches on a garage door trim & molding project. The closed cell backer rod was squeezed in some of the cavities bordering the trim. Cavities, which otherwise, would have required excessive amounts of caulk. Thereafter the cavities were finished with a neat bead of the appropriate caulk. For that purpose, this particular backer rod was perfect. As noted in several other reviews, the backer rod doesn't arrive tightly wound around a spool, but instead stuffed into a box. In that respect, I would suggest that Amazon update the image of the listing on its web-site. I wasn't bothered by it. The item arrived quickly, proved sturdy enough for its intended purpose, and, indeed accomplished its intended purpose perfectly. In comparison with The Home Depot as well as local hardware stores, the price was certainly a positive experience. Make sure of the size (thickness) of backer rod your project(s) will require.

### ⭐⭐⭐⭐⭐ Useful to fill driveway cracks
*by H***E on October 7, 2024*

Used this to fill the bottom of several cracks in my asphalt driveway. Doing this saved a lot of asphalt driveway caulk and fit nicely into the cracks. Caulked over it and so far, so good. It will be interesting to see its performance over the winter.

### ⭐⭐⭐⭐ Look elsewhere unless you have weeks to kill…
*by D***S on May 2, 2025*

Received the backer rod but the plastic bag it was in was damaged. Fortunately it was one piece of 100 feet so it was all there. Used it all tonight & worked perfectly. I needed another 100 ft to finish the garage but had to buy from another seller tonight because this product had a 14 day delivery! 2 weeks to get it delivered to me! Not going to do that again!

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/5047740-1-4-closed-cell-backer-rod-100-ft-roll](https://www.desertcart.co.th/products/5047740-1-4-closed-cell-backer-rod-100-ft-roll)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-11*