---
product_id: 2392221
title: "RadonSeal Complete DIY Foundation Crack Repair Kit, 10 Ft - Low-Viscosity Urethane Injection Sealant for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free Filler"
brand: "radonseal"
price: "$484"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/2392221-radonseal-complete-diy-foundation-crack-repair-kit-10-ft-low
store_origin: NZ
region: New Zealand
---

# Waterproof sealant Drill-free injection Radon & gas barrier RadonSeal Complete DIY Foundation Crack Repair Kit, 10 Ft - Low-Viscosity Urethane Injection Sealant for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free Filler

**Brand:** radonseal
**Price:** $484
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal smart, live dry — the ultimate DIY foundation fix!

## Quick Answers

- **What is this?** RadonSeal Complete DIY Foundation Crack Repair Kit, 10 Ft - Low-Viscosity Urethane Injection Sealant for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free Filler by radonseal
- **How much does it cost?** $484 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/2392221-radonseal-complete-diy-foundation-crack-repair-kit-10-ft-low)

## Best For

- radonseal enthusiasts

## Why This Product

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

## Key Features

- • **Dual Protection Barrier:** Blocks radon gas and soil contaminants, securing your basement’s air quality.
- • **Interior-Only Application:** Save thousands by repairing from inside—no exterior excavation needed.
- • **Effortless Drill-Free Repair:** Fix foundation cracks without damaging your walls or tools.
- • **Precision Low-Viscosity Urethane:** Injects smoothly with any standard caulking gun for a flawless seal.
- • **Permanent Hairline Crack Solution:** Stops water leaks and prevents costly structural damage.

## Overview

RadonSeal Complete DIY Foundation Crack Repair Kit offers a 10 ft low-viscosity, 2-part urethane foam injection system that seals hairline cracks in poured concrete basement walls without drilling. Designed for interior use, it provides a waterproof, radon-resistant barrier with 180 PSI tensile strength, ensuring long-lasting protection against water leaks and harmful soil gases.

## Description

RadonSeal Complete DIY Foundation Crack Repair Kit, 10 Ft - Low-Viscosity Urethane Injection Sealant for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free Filler

## Features

- Drill-Free Injection: Repair basement wall cracks effortlessly without drilling, ensuring minimal disruption to your home's structure.
- Simple Application: Use a standard caulking gun to inject the low-viscosity, 2-component urethane, making the process accessible for any homeowner.
- Effective Hairline Crack Repair: Seal even the smallest cracks permanently with the specialized urethane, preventing further water seepage and damage.
- Interior Repair Advantage: Save on costly excavation by repairing cracks from inside your basement, maintaining exterior aesthetics and structural integrity.
- Comprehensive Protection: This solution not only protects against water but also acts as a barrier against radon and soil gases, safeguarding your basement environment.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Grey |
| Brand | RadonSeal |
| Liquid Volume | 22 Fluid Ounces |
| Item Form | Foam |
| Maximum Gap Fill | 0.5 Inches |
| Surface Recommendation | Poured Concrete Walls |
| Tensile Strength | 180 PSI |
| Water Resistance Level | Waterproof |
| Number of Items | 1 |
| Manufacturer | Novion |
| UPC | 856255006058 |
| Unit Count | 1.0 Count |
| Material | 2-Part Expanding Urethane Foam |
| Part Number | 301 |
| Item model number | 301 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Included Components | repair kit |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Color:** Grey
- **Brand:** RadonSeal
- **Liquid Volume:** 22 Fluid Ounces
- **Item Form:** Foam
- **Maximum Gap Fill:** 0.5 Inches

## Images

![RadonSeal Complete DIY Foundation Crack Repair Kit, 10 Ft - Low-Viscosity Urethane Injection Sealant for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free Filler - Image 1](https://m.media-amazon.com/images/I/71kR5oSnXQL.jpg)

## Questions & Answers

**Q: Is this strong enough to "push back" toward the exterior of the wall? ie, is it better than the products where you drill behind the crack?**
A: Ben - I am not an expert by any means - but I can tell you my experience.  This is a low pressure product - meaning that the "pressure" comes from VERY slow use of a caulk gun.  That being said - this is an expanding foam type of product - it goes in as a very thin liquid and once activated foams and flls the crack - even hair line ones.   The directions say that as long as you are below grade you do not have to seal the outside - well apparently the very top of our crack was above grade - when I went outside I could see the product had foamed to the outside.  This means it went from a small hailine crack - through the wall  - all the way to the exterior wall.  I used this product to fill two areas with cracks  that had leaked for a long time.  It's been a few months now - and lots of rain - and we are still very dry.  No drilling was required.  I hope this helps.

**Q: Can u use this product will water actively coming out of the wall or does it need to be dry? Once the solution is applied. do u need to wet the wa**
A: Foundation cracks cannot be repair while actively leaking. The surface sealer and port adhesive requires a dry surface to properly cure and adhere. The injection foam can be used when the crack is wet. In fact, part if the injection process includes injecting water to assist in the foam expansion.

**Q: What is the size of the port adhesive containers? eg ounces**
A: Each jar is 8-ounces or .25 quarts.

**Q: Have several cracks, some are substantial size, how much surface area does this kit cover?**
A: ONE (1) RadonSeal® DIY Crack Injection Kit roughly fills 8-10 linear feet of cracks in poured concrete walls, from hairline to 1/2" wide. If there is a large void behind the wall or the urethane wastefully runs down towards the footings, it can consume more polyurethane foam, typically in the lowest injection port. You can order additional cartridges by calling RadonSeal®. Twenty-foot kits are available on Amazon®.

## Frequently Bought Together

- RadonSeal Complete DIY Foundation Crack Repair Kit - 10 Ft - Low-Viscosity Urethane Injection Sealant for Crawl Spaces & Concrete Basement Walls, Stops Water Leaks & Radon Gas, Drill-Free Filler
- Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black, 5 Gallon
- Applied Technologies 6-10' Fast Set Concrete Foundation Crack Repair Kit - Hydra Stop 300 Polyurethane Foam for Wall Cracks, Prevents Basement Flooding, Quick-Setting Waterproof Sealing Solution

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-27*