---
product_id: 529489314
title: "Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet"
brand: "lcr"
price: "¥105328"
currency: JPY
in_stock: false
reviews_count: 5
category: "Lcr"
url: https://www.desertcart.jp/products/529489314-polygem-liquid-concrete-repair-lcr-kit-penetrating-injection-epoxy-foundation
store_origin: JP
region: Japan
---

# 24-hour full cure time 100% solids, waterproof & chemical resistant 8399 PSI tensile strength Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet

**Brand:** lcr
**Price:** ¥105328
**Availability:** ❌ Out of Stock

## Summary

> 🧱 Seal cracks, stop leaks, and secure your foundation like a pro!

## Quick Answers

- **What is this?** Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet by lcr
- **How much does it cost?** ¥105328 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/529489314-polygem-liquid-concrete-repair-lcr-kit-penetrating-injection-epoxy-foundation)

## Best For

- lcr enthusiasts

## Why This Product

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

## Key Features

- • **Rapid 24-Hour Cure:** Get your foundation back to work fast with a full cure in just one day.
- • **Deep Penetration Injection:** Epoxy flows deep into cracks, expanding to seal leaks and restore integrity.
- • **Eco-Conscious & ASTM Certified:** Meets ASTM C881 standards with zero VOCs and solvent-free formula for safe, professional-grade repairs.
- • **Versatile Multi-Surface Adhesion:** Bonds seamlessly to concrete, wood, metal, and fiberglass—perfect for diverse repair needs.
- • **Industrial-Grade Structural Strength:** Reinforces concrete with an impressive 8399 PSI tensile strength for lasting durability.

## Overview

Polygem Liquid Concrete Repair Kit is a professional-grade epoxy injection system designed to permanently repair concrete cracks up to 8 feet long and 1/16 inch wide. With industrial tensile strength of 8399 PSI, 24-hour cure time, and 100% solids waterproof formula, it restores structural integrity across multiple surfaces including concrete, wood, metal, and fiberglass. Made in the USA and ASTM certified, this kit is ideal for homeowners and contractors seeking a reliable, eco-friendly solution to foundation leaks and structural cracks.

## Description

Stop basement leaks permanently! Liquid Concrete Repair is a unique epoxy developed for the repair of cracked concrete. This epoxy is also ideal for restoring delaminated wood and bonding metals and fiberglass. Each kit will fix approximately one crack that measures 1/16" wide by 8' long by 8" deep. Epoxy-based crack filler Injects deep into cracks and expands to fill all gaps and stop leaks For vertical and horizontal applications.Polygem, Inc. warrants its products to be free of manufacturing defects and that, at the time and place of shipment, our material will meet current physical properties when applied within Polygem’s directions and tested in accordance with ASTM and Polygem standards. Polygem, Inc’s liability is limited to replacement of material found defective. As Polygem, Inc. has no control over the use to which others may put its products, it is recommended that the product be tested to determine if suitable for a specific application and/or our information is valid in a particular circumstance. Responsibility remains with the architect or engineer, contractor and owner for the design, application and proper installation of each product. Nothing contained herein shall be construed to be a recommendation to use or as a license to operate under or to infringe any existing patents.

Review: Structural repair not a water sealant
Review: Product worked as advertised mostly. One tube's mixer did not separate from the foil which made mixing hard, but not impossible. FYI, of this happens do not push hard enough to dislodge the bottom, this is what some other reviewers are complaining about, but it's avoidable. Watch the how to vids on YouTube. Some helpful tips, since if you're reading reviews you likely haven't done this much: 1. Be very thorough in putting the epoxy around the injector base. Use more than you think you need, you should have plenty of epoxy. 2. Use nails to position the injectors against the crack, as they tend to move if you are not careful and might get blocked by epoxy. 3. Have a quickset epoxy on hand before injecting in case you find any holes in your epoxy job. 4. Use very little pressure, and watch the tiny bubbles in the nozzle to see if it's still flowing in. If it is not, it's likely the injector is blocked. 5. Put down some sheets or cardboard, as you will likely leak the resin at some point unless you are very practiced. 6. Each tube handles about 4 feet, but the kit only comes with 6 injectors. Where the crack is wider, you can put them much further apart than 8 to 12 inches as recommended. You can always order more injectors, but I doubt you really need them. Frankly if you need more than two tubes of resin, your crack is likely too big for this repair and you need a professional.

## Features

- Applications include - Basement foundation crack repair, industrial warehouse and residential floors, patios and sidewalks, balcony, pool and parking decks, reservoir, tank and pool leak repair
- Excellent adhesion to concrete, wood, fiberglass, and metal surface; restores structural strength
- Made in the USA - Ideal for homeowners, contractors, remodelers, D.I.Y. users, and maintenance professionals alike
- Meets ASTM C881, Types I, II, IV and V, Grades 1 and 2, contains no VOC’s or Solvents; 100% solids, and is chemical and solvent resistant
- Kit contains enough material to repair an average 1/16 inch wide, 8-foot crack in a concrete wall

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01C28FEDA |
| Brand | LCR |
| Colour | red |
| Country of Origin | USA |
| Full Cure Time | 24 Hours |
| Item Dimensions LxWxH | 10.8 x 22.2 x 24.1 Centimeters |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 10 Fluid Ounces |
| Item Weight | 1 kg 990 g |
| Item model number | 5581230 |
| Manufacturer | LCR |
| Material | Wood |
| Net Quantity | 1.0 Count |
| Package Information | Tube |
| Product Dimensions | 10.8 x 22.23 x 24.13 cm; 1.99 kg |
| Special Feature | 100% Solids, Chemical Resistant, Crack Resistant, Deep Penetration, Meets ASTM Standards |
| Specific Uses For Product | wood |
| Tensile Strength | 8399.99 Pounds Per Square Inch |
| UPC | 080729527354 |
| Viscosity | 750 |
| Viscosity Level | Low |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** LCR
- **Item Form:** Liquid
- **Material:** Wood
- **Special Feature:** 100% Solids, Chemical Resistant, Crack Resistant, Deep Penetration, Meets ASTM Standards
- **Specific Uses For Product:** wood

## Images

![Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet - Image 1](https://m.media-amazon.com/images/I/512mSFGcLcL.jpg)
![Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet - Image 2](https://m.media-amazon.com/images/I/518czA6UjrL.jpg)
![Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet - Image 3](https://m.media-amazon.com/images/I/51LQXkHeExL.jpg)
![Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet - Image 4](https://m.media-amazon.com/images/I/51NpF+DRfeL.jpg)
![Polygem Liquid Concrete Repair (LCR) Kit Penetrating Injection Epoxy for Foundation & Concrete Crack Repair & Leak Prevention DIY Complete Kit Repairs Average Concrete Foundation Crack of 8 feet - Image 5](https://m.media-amazon.com/images/I/51cmajXX1rL.jpg)

## Questions & Answers

**Q: is a kit available with injection ports for corner cracks?**
A: At present, we do not offer the corner ports on Amazon.com, but are preparing to add them soon.

**Q: It’s  strength in PSI ?**
A: Thanks for your question. Note cure time is 24 Hours.
Compressive Strength: 14.480 psi
Tensile Strength: 8.315 psi

**Q: is this a 2 day process? what is the set time for the epoxy**
A: Yes. It’s at least 24 hours between crack seal on outside and epoxy in the center.

**Q: What is allowable temperature range for proper curing? Will cold weather affect proper curing?**
A: Any concrete below 65 degrees F will delay cure time. The epoxy will still cure, but will take longer.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***M on 29 September 2024*

Structural repair not a water sealant

### ⭐⭐⭐⭐⭐ Review
*by D***E on 3 March 2025*

Product worked as advertised mostly. One tube's mixer did not separate from the foil which made mixing hard, but not impossible. FYI, of this happens do not push hard enough to dislodge the bottom, this is what some other reviewers are complaining about, but it's avoidable. Watch the how to vids on YouTube. Some helpful tips, since if you're reading reviews you likely haven't done this much: 1. Be very thorough in putting the epoxy around the injector base. Use more than you think you need, you should have plenty of epoxy. 2. Use nails to position the injectors against the crack, as they tend to move if you are not careful and might get blocked by epoxy. 3. Have a quickset epoxy on hand before injecting in case you find any holes in your epoxy job. 4. Use very little pressure, and watch the tiny bubbles in the nozzle to see if it's still flowing in. If it is not, it's likely the injector is blocked. 5. Put down some sheets or cardboard, as you will likely leak the resin at some point unless you are very practiced. 6. Each tube handles about 4 feet, but the kit only comes with 6 injectors. Where the crack is wider, you can put them much further apart than 8 to 12 inches as recommended. You can always order more injectors, but I doubt you really need them. Frankly if you need more than two tubes of resin, your crack is likely too big for this repair and you need a professional.

### ⭐⭐⭐⭐⭐ Review
*by C***I on 13 November 2024*

If you follow the instructions, it works quickly and well. I was able to install 24 linear feet in an hour/1.5 hours. Allowed it to cure for 12 hours. Injected to thinner epoxy 12 hours later. Finished that process in less than an hour. Couple suggestions: make sure you cover over the crack thoroughly so you don't have leakage, when mixing the injectable epoxy, mixing the tube takes some finess to break the aluminum barrier and the screw in the mixer in the tube. Good luck!

## Frequently Bought Together

- Polygem LCR Epoxy Concrete Crack Repair Kit - Stops Leaks - High-Performance Structural Bonding - Professional Grade - Reliable & Effective - DIY Friendly - Versatile - Wood, Fiberglass, Metal & More
- Polygem LCR Injection Ports for Concrete Repair, 7-Pack with Attached Caps, Use with LCR Injection Epoxy and Repair Paste
- LCR Injection Epoxy for Concrete, Fiberglass, Metal, and More; Combines Part A Resin and Part B Hardener for Use in One 10-Ounce Cartridge for Standard Caulking Guns; Use with LCR Crack

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-10*