---
product_id: 671435116
title: "U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet)"
brand: "u0u"
price: "¥3294"
currency: JPY
in_stock: true
reviews_count: 8
url: https://www.desertcart.jp/products/671435116-u0u-backer-rod-1-4-inch-white-backer-rod-caulk
store_origin: JP
region: Japan
---

# 1/4 inch diameter fits most standard gaps 16.4 ft length for extensive coverage EPDM foam resists water & ensures durable sealing U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet)

**Brand:** u0u
**Price:** ¥3294
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smart, save time, and never miss a gap!

## Quick Answers

- **What is this?** U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet) by u0u
- **How much does it cost?** ¥3294 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/671435116-u0u-backer-rod-1-4-inch-white-backer-rod-caulk)

## Best For

- u0u enthusiasts

## Why This Product

- Trusted u0u brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Multi-Purpose Mastery:** Perfect for sealing, noise reduction, pet protection, and more—be the fix-it pro
- • **Premium EPDM Durability:** Water-resistant, non-absorbent foam that stands the test of time
- • **Cut, Press, Seal—Done!:** Easily customizable length for quick, no-hassle installation
- • **Precision Fit Every Time:** 1/4 inch diameter designed to snugly fill cracks and joints without mess
- • **Extended Reach, Minimal Fuss:** 16.4 feet of flexible foam rod ready to tackle your biggest gaps

## Overview

The U0U Backer Rod is a 16.4-foot long, 1/4 inch diameter high-quality EPDM foam rod designed for filling and sealing cracks and joints in concrete, doors, windows, and more. Its water-resistant, durable material ensures long-lasting performance, while its easy-to-cut design allows for quick, precise installation across a variety of household and industrial applications.

## Description

Full description not available

## Features

- Suitable Length:The extension length of the foam rubber backer rod is 16.4 feet,diameter of 1/4 inch,providing sufficient materials to meet your needs. Foam rubber backer rod are easy to cut and install
- Suitable for Most Cracks: Foam backer rod are suitable for most cracks, such as filling pavement and wall cracks, sealing doors and windows, as well as protecting dog ears and making ring frames.
- High Quality Material: This caulk backer rod is made of high-quality EPDM,which is different from the cheap foam,won't absorb water,safe to use,possess nice sealing effect. The foam backer is suitable for most kinds of cracks, such as pavement cracks, wall joints and foundations
- Versatile to Use: You just need to cut the white foam rod into the length you need, put it in the gap to be filled, press it inside, and the operation is complete
- Widely Used: The foam space filler can be applied for sealing household doors, windows, cabinets, shock absorption and noise reduction of industrial machinery and equipment, filling gaps in outdoor road surfaces, pet ear protection, and so on

## Product Details

- **Brand:** U0U
- **Item Form:** Foam
- **Maximum Gap Fill:** 0.25 Inches
- **Surface Recommendation:** Counter Top, Door, Gutter, Pipe, Sink, Tile, Tub, Walls, Window
- **Water Resistance Level:** Waterproof

## Images

![U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet) - Image 1](https://m.media-amazon.com/images/I/71jOjT1CskL.jpg)
![U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet) - Image 2](https://m.media-amazon.com/images/I/71uVek8e+uL.jpg)
![U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet) - Image 3](https://m.media-amazon.com/images/I/71hq6wffDVL.jpg)
![U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet) - Image 4](https://m.media-amazon.com/images/I/81NzJRaAX2L.jpg)
![U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet) - Image 5](https://m.media-amazon.com/images/I/81WFjbGQY6L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed
*by M***N on July 11, 2025*

I have a painting business, and this product is perfect for the large gaps That need caulk. It’s soft enough to work into tight areas and firm enough for filling gaps

### ⭐⭐⭐⭐⭐ Pefect for our needs
*by C***N on July 31, 2025*

We had a gap between the tub and the shower stall. We used this to fill in some of the gab prior to caulking the space. It was perfect for what we needed it for. It was easy to use and fit the space just right. We will see how well it hold up! We're hopeful.

### ⭐⭐⭐⭐ Easier to use than others i’ve tried.
*by J***U on May 4, 2025*

Worked as needed. No complaints. Round, stretches well

## Frequently Bought Together

- U0U Backer Rod 1/4 Inch,White Backer Rod Caulk Saver for Gaps and Joint Concrete Filling,16.4Ft Concrete Expansion Joint Filler (1/4 inch *16.4 feet)
- DGSL Backer Rod 1/2 Inch, Caulk Saver EPDM Rubber Backer Rod for Joints Concrete Filling and Gaps, Driveway and Wall Cracks(16.4 Ft Length)
- 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)

---

## 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.jp/products/671435116-u0u-backer-rod-1-4-inch-white-backer-rod-caulk](https://www.desertcart.jp/products/671435116-u0u-backer-rod-1-4-inch-white-backer-rod-caulk)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*