---
product_id: 235895101
title: "MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm"
brand: "marshland"
price: "A$9"
currency: AUD
in_stock: null
reviews_count: 8
url: https://www.desertcart.com.au/products/235895101-marshland-gap-filler-sealant-foam-backer-rod-20mm
store_origin: AU
region: Australia
---

# 10 KSI tensile strength ensures durability 20mm thick foam for perfect gap filling 3 meters length for versatile DIY projects MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm

**Brand:** marshland
**Price:** A$9
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Seal smart, save more – the ultimate gap filler for flawless finishes!

## Quick Answers

- **What is this?** MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm by marshland
- **How much does it cost?** A$9 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/235895101-marshland-gap-filler-sealant-foam-backer-rod-20mm)

## Best For

- marshland enthusiasts

## Why This Product

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

## Key Features

- • **Multipurpose Mastery:** Ideal for doors, windows, walls, pavements, and even road construction joints
- • **Fast Drying, Long Lasting:** Enhances sealant airing to speed up drying and improve bond strength
- • **Seal Every Gap Like a Pro:** 20mm thickness fills large cracks & prevents drafts effortlessly
- • **Flexible Foam That Bounces Back:** Open-cell design compresses easily and returns to shape for perfect sealing
- • **Save on Sealant, Not on Quality:** Controls sealant depth to reduce caulk consumption and mess

## Overview

MARSHLAND Gap Filler is a 20mm thick, 3-meter long open-cell foam backer rod designed to fill large cracks and gaps in walls, doors, windows, and construction joints. With a tensile strength of 10 KSI, it enhances sealant elasticity, reduces caulk usage, and accelerates drying time, making it a versatile and durable solution for both DIY and professional projects.

## Description

Full description not available

## Features

- Backer Rod:- Perfect backer rod 20mm for filling cracks in concrete prior to using crack sealant Warranty is not applicable for this product Fills large gaps and openings to prevent drafts.
- Backer rod:- Increase elasticity in the joint sealant. 20mm Reduce caulk consumption by controlling sealant depth— this prevents excessive use of caulking or sealant.
- Backer Rod:- Common uses: Glazing installations, Window and door applications, Expansion joints, Curtain wall joints, Partitions, Log construction, Pavement joints and repairs, Contraction and expansion joints of concrete highways, Runways, 20mm Driveways & Parking Lots.
- Backer Rod:- Open cell 20mm backer rod is unique; it can easily compress and return to its original state due to unrestricted air movement. This flexibility makes it easily conform to sealing applications and helps limit the depth of the sealant while also adding good sealant airing, which can reduce drying or set up time.
- Backer Rod:- Sealants, caulking or other chinking materials will stick more easily to closed cell backer rods which have a better bonding surface area than an open cell product. 20mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | MARSHLAND |
| Colour | White |
| Material | Foam |
| Number of Items | 1 |
| Surface Recommendation | Door, Wall, Window |
| Size | 3 m (Pack of 1) |
| Item Thickness | 20 Millimetres |
| Tensile Strength | 10 Kips Per Square Inch |
| Compatible Material | foam |
| Net Quantity | 1.00 Count |
| Manufacturer | Marshland Purchase and sale |
| Country of Origin | India |
| Model number | Backer Rod |
| Item Weight | 40 g |
| Product Dimensions | 300 x 2 x 2 cm; 40 g |
| Item model number | Backer Rod |
| Item Height | 20 Millimeters |
| Item Width | 20 Millimeters |
| Included Components | Backer Rod 20mm 3meter |

## Product Details

- **Brand:** MARSHLAND
- **Colour:** White
- **Material:** Foam
- **Number of Items:** 1
- **Surface Recommendation:** Door, Wall, Window

## Images

![MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm - Image 1](https://m.media-amazon.com/images/I/41Zlx1K21IL.jpg)
![MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm - Image 2](https://m.media-amazon.com/images/I/61yHrEZJ+LL.jpg)
![MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm - Image 3](https://m.media-amazon.com/images/I/31zBaxFS+mL.jpg)
![MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm - Image 4](https://m.media-amazon.com/images/I/61o7eKf2flL.jpg)
![MARSHLAND Gap Filler Sealant Foam Backer Rod 20mm - Image 5](https://m.media-amazon.com/images/I/61Z3fkt53CL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality!
*by A***H on 21 July 2021*

There's hardly anything to review in a simple product like this. But it was exactly as described and worked well, so I think for that alone any product deserves five stars. I used it for packing window AC sides. One thing that tripped me up is that at places the gap in my window sill was half of the tube's diameter and I was simply unable to compress it and fit it in. So, while this is foam, it won't compress too much (which is a good thing, I guess) so you might end up cutting it lengthwise or something. Other than that, clean product fitting the description perfectly. I'm quite happy!

### ⭐⭐⭐⭐ Good product and solves purpose
*by A***H on 4 January 2021*

Quality of product was upto Mark.. though its an item which is required on need basis so cost is understandable but overall satisfied

### ⭐⭐⭐ It's just a blown up foam
*by A***R on 8 October 2023*

Too expensive

## Frequently Bought Together

- Marshland Gap Filler Crack Filler Foam Sofa Gap Filler Sealant Foam Tube Backer Rod Fill Cracks in Wall Doors Sofa Joints Road Building Construction DIY Projects Multipurpose Work 20mm Thk 3mtr
- Loctite Tite Foam Windows & Door PU sealant(White), Expanding Foam for Windows and Door Gaps Filling, Keeps dust and pests aways, DIY Dries Fast, Waterproof no Shrinkage Easy Application, 340g

---

## 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.com.au/products/235895101-marshland-gap-filler-sealant-foam-backer-rod-20mm](https://www.desertcart.com.au/products/235895101-marshland-gap-filler-sealant-foam-backer-rod-20mm)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-24*