---
product_id: 513623781
title: "GEOLOOP LEAK SEAL for Radiant Floor Heat and for Geothermal Systems Bottle, 8 oz."
brand: "geoloop leak seal"
price: "A$98"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/513623781-geoloop-leak-seal-for-radiant-floor-heat-and-for-geothermal
store_origin: AU
region: Australia
---

# For radiant systems Leak sealant 8 oz. bottle GEOLOOP LEAK SEAL for Radiant Floor Heat and for Geothermal Systems Bottle, 8 oz.

**Brand:** geoloop leak seal
**Price:** A$98
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal the deal before it leaks away!

## Quick Answers

- **What is this?** GEOLOOP LEAK SEAL for Radiant Floor Heat and for Geothermal Systems Bottle, 8 oz. by geoloop leak seal
- **How much does it cost?** A$98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/513623781-geoloop-leak-seal-for-radiant-floor-heat-and-for-geothermal)

## Best For

- geoloop leak seal enthusiasts

## Why This Product

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

## Key Features

- • **🌍 Eco-friendly choice!:** Designed for geothermal systems, it’s a sustainable solution for your home.
- • **💰 Cost-effective solution!:** Avoid the high expenses of HVAC system replacements with this simple fix.
- • **⚡ Quick and easy application!:** Just apply and let it work its magic—no professional help needed.
- • **🏗️ No demolition required!:** Say goodbye to the hassle of tearing up floors and concrete.
- • **🔒 Stop leaks in their tracks!:** GEOLOOP LEAK SEAL effectively seals small line leaks, saving you from costly repairs.

## Overview

GEOLOOP LEAK SEAL is an 8 oz. leak sealant designed specifically for radiant floor heating and geothermal systems. Manufactured by Marlig Industries, this compact solution effectively addresses small line leaks without the need for costly repairs or demolition, making it a smart choice for homeowners looking to maintain their heating systems efficiently.

## Description

Many radiant heated floor systems have been shut down because of small line leaks that can't be found or fixed. Home owners can then be faced with the cost and installation of a partial or whole new hvac system. If a hole[s] develops in one of the lines, it can be a radiant floor disaster. If you can find a company that is willing to try and fix a radiant floor leak, the demolition of finished floors and concrete, plus the cost, is incredible and may not always prove satisfactory. However, there is simple solution using GEOLOOP LEAK SEAL that is usually effective, and may be worth your while. Method: Try to isolate the line with the leak and use an external sump pump and no less than a five gallon container. Allow the water to circulate through the line and monitor the water level drop in the container. This will allow you to determine the water loss. If not too severe add the GEOLOOP LEAK SEAL to the container, after following mixing instructions, and allow the solution to re-circulate through the loop. If and when the level holds, you know you have stopped the leak. Continue to re-circulate for an additional 2-3 hours. Clear the line with air and let it set for 48 hours. You can then pressure test the line between 10-20 psi. If the pressure holds re-add your water, add the heat and pressure up to 15-20 psi. In most cases, this method will work 80-85% of the time. You now should have a leak repair lasting for many years. If this method is not effective in your circumstance, a manual repair would be required.

## Features

- Many radiant heated floor systems have been shut down because of small line leaks that can't be found or fixed.
- Home owners can then be faced with the cost and installation of a partial or whole new HVAC system. If a hole[s] develops in one of the lines, it can be a radiant floor disaster.
- If you can find a company that is willing to try and fix a radiant floor leak, the demolition of finished floors and concrete, plus the cost, is incredible and may not always prove satisfactory.
- However, there is simple solution using GEOLOOP LEAK SEAL that is usually effective, and may be worth your while.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Marlig Industries |
| Part number | GEOLOOP LEAK SEAL 8 oz. |
| Item Weight | 226 g |
| Product Dimensions | 2.54 x 7.62 x 7.62 cm; 226.8 g |
| Item model number | GEOLOOP LEAK SEAL 8 oz. |
| Style | Compact |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![GEOLOOP LEAK SEAL for Radiant Floor Heat and for Geothermal Systems Bottle, 8 oz. - Image 1](https://m.media-amazon.com/images/I/71HC+pORZIL.jpg)
![GEOLOOP LEAK SEAL for Radiant Floor Heat and for Geothermal Systems Bottle, 8 oz. - Image 2](https://m.media-amazon.com/images/I/71DwyFJVzaL.jpg)
![GEOLOOP LEAK SEAL for Radiant Floor Heat and for Geothermal Systems Bottle, 8 oz. - Image 3](https://m.media-amazon.com/images/I/71ipc386bxL.jpg)

## Questions & Answers

**Q: Have a small leak in a 1/2" copper pipe under the concrete slab, will this work on copper pipes and how do I inject this into a closed system?**
A: Yes definitely

**Q: Have a 7/8" poly radiant under-floor (2nd story so under ceilings) with very tiny leaks, will this product damage the Taco circulator?**
A: No it shouldn’t used on geothermal loop that had small leak and it didn’t harm the pumps but I had large volume of water in loop you should calculate how much water is in system and you might not need to use hole bottle of sealant

**Q: Will this stop leaks in PEX piping used for infloor heat in concrete slab?**
A: We have used it once on a geothermal closed loop field.  Thus it seemed to have worked with HDPE pipe.  I know pex polyethelene tubing has different properties so the manufacturer of the tubing or product being sold may know better but as long as the manufacturer says it's safe for pex it may be worth a try.

**Q: How much do you add to water**
A: Just add one to the circulation

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-11*