---
product_id: 316982271
title: "Liquid Hardener, 1 pt, Clear to Amber, Can"
brand: "j-b weld"
price: "€ 57.25"
currency: EUR
in_stock: true
reviews_count: 5
category: "J B Weld"
url: https://www.desertcart.nl/products/316982271-liquid-hardener-1-pt-clear-to-amber-can
store_origin: NL
region: Netherlands
---

# Deep wood fiber penetration Quick-drying formula Reinforces & seals rotted wood Liquid Hardener, 1 pt, Clear to Amber, Can

**Brand:** j-b weld
**Price:** € 57.25
**Availability:** ✅ In Stock

## Summary

> 🛠️ Restore, Reinforce, Repeat — Wood Repair Made Effortless!

## Quick Answers

- **What is this?** Liquid Hardener, 1 pt, Clear to Amber, Can by j-b weld
- **How much does it cost?** € 57.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/316982271-liquid-hardener-1-pt-clear-to-amber-can)

## Best For

- j-b weld enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Durability:** Proven to keep putty intact even under sanding and painting—like new again.
- • **One-Part Simplicity:** No mixing hassle—just brush on and restore with ease.
- • **Deep Penetration Power:** Special formula seeps deep into compromised wood fibers for lasting reinforcement.
- • **Fast-Acting Wood Savior:** Dries quickly to lock out moisture and stop decay in its tracks.
- • **Perfect Prep for Fillers:** Creates a solid, moisture-resistant base for flawless putty application.

## Overview

J-B Weld Liquid Hardener is a quick-drying, one-part liquid designed to penetrate and reinforce decayed or rotted wood. It seals moisture out and stabilizes wood fibers, providing a durable base for putty fillers. Ideal for restoring old wood surfaces like window sills, it simplifies wood repair with professional-grade results and minimal prep.

## Description

J-B Wood Restore Liquid Hardener is a quick drying liquid for sealing and reinforcing decayed or rotted wood; for reducing moisture in decaying or rotted wood surfaces, prior to putty filling. The special liquid formula penetrates the wood to reinforce the fibers stopping further decay and providing a solid base for J-B Wood Filler Compound.

Review: Had an old set of windows in a very old house. House not worth all new windows due to other problems. Sills were rotted and water would just go down the cracks and fester. Wood was punky or soft and wouldn't keep any paint. Used a similar (but two part) epoxy product in Alaska before and it worked great. Thought I'd try this one part product. I will never go back to a two part system. This product penetrated the compromised wood quite deep down and solidified it. The next day I was able to putty the cracks and low spots and the putty stayed in place tightly. When using an electric dual action sander the putty did not loosen at all. After painting you couldn't tell they were ever damaged. CAUTIONS: Wait till the wood is completely dry. Remove any loose chunks and dust. I used light pressure with a wire brush and vacuumed the debris. In poor weather tarp the area and use an electric hair dryer or heat gun to dry surface quickly. Put putty on after this product, not before. USE GLOVES. Some people could be allergic to uncured product. Also use safety glasses if you are using air to blow out the debris. I prefer to vacuum the debris up instead of blowing them away. Also if the area below the window is one you don't want to leave a permanent unsightly stain on shield the area from drips. Don't pour on thick, often one wet coat will do it. A brush is recommended to get deep penetration into the cracks. One bottle will usually take care of two 36" inch sills or several smaller patches. If in doubt, buy two. If you don't have enough to completely fix a bad spot don't use it at all until you have enough product. Otherwise you will semi-seal up the surface and the new product will not penetrate the surface. I left the patches to dry overnight but if the surface is hard and not tacky after 2-3 hours you could lightly sand if needed and putty could be applied. Don't use heat to accelerate the drying process in the first hour or the penetration will not be as deep. A hair dryer will speed up the process though if the wood was good and dry before treating it with the j-b weld product. Acetone will clean up any dripping but also could affect the finish of the surface you are trying to clean, so the best technique is to mask as needed and watch for drips for the first 5 or 10 minutes. A throw away brush is what I recommend. After trying to clean up a brush I used with this stuff I spent more on acetone than the cost of the brush, let alone the time. Have fun and be prepared to be amazed.
Review: this works great.

## Features

- Item Category: Bonding Adhesives
- Item Trademark: J-B Weld
- manufacturer: J-B Weld

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005493J1E |
| Item model number | 40001 |
| Manufacturer | J-B Weld |
| Product Dimensions | 5.08 x 10.16 x 17.78 cm; 453.59 g |

## Product Details

- **Brand:** J-B Weld
- **Colour:** red
- **Item form:** Liquid
- **Material:** Amber
- **Special features:** Strong

## Images

![Liquid Hardener, 1 pt, Clear to Amber, Can - Image 1](https://m.media-amazon.com/images/I/71gie7WH4hL.jpg)

## Available Options

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

## Questions & Answers

**Q: Will this strengthen the partially rotted tops of 4 x 4 red wood deck posts, fill the rot cavity, and firmly hold screws?**
A: I have used this product and Minwax wood hardener. Minwax is the better product. It penetrates deeper and strengthen the wood. I wood follow up with an exterior grade wood filler to fill any rotted out voids then carry on with your fasteners.

**Q: how is it applied?**
A: I am a fan. However there is no way it can be sprayed on. it's very thick and i can't comprehend it being in a spray bottle. Think honey or syrup. As a handyman profesional I love this. I just did 3 days doing roof trim repair that had rot and carpenter ant damage. The fibers are loose like straw. this firmed them up enough for me to put in wood epoxy.

**Q: Chemically, what is this stuff?**
A: http://www.jb-weld.co.uk/images/technical-data-sheets/J-B-Weld-MSDS-Wood-Restore-Epoxy1.pdf

**Q: Can this be used outdoors?**
A: yes it can. I used it on exterior window trim.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***S on 28 December 2023*

Had an old set of windows in a very old house. House not worth all new windows due to other problems. Sills were rotted and water would just go down the cracks and fester. Wood was punky or soft and wouldn't keep any paint. Used a similar (but two part) epoxy product in Alaska before and it worked great. Thought I'd try this one part product. I will never go back to a two part system. This product penetrated the compromised wood quite deep down and solidified it. The next day I was able to putty the cracks and low spots and the putty stayed in place tightly. When using an electric dual action sander the putty did not loosen at all. After painting you couldn't tell they were ever damaged. CAUTIONS: Wait till the wood is completely dry. Remove any loose chunks and dust. I used light pressure with a wire brush and vacuumed the debris. In poor weather tarp the area and use an electric hair dryer or heat gun to dry surface quickly. Put putty on after this product, not before. USE GLOVES. Some people could be allergic to uncured product. Also use safety glasses if you are using air to blow out the debris. I prefer to vacuum the debris up instead of blowing them away. Also if the area below the window is one you don't want to leave a permanent unsightly stain on shield the area from drips. Don't pour on thick, often one wet coat will do it. A brush is recommended to get deep penetration into the cracks. One bottle will usually take care of two 36" inch sills or several smaller patches. If in doubt, buy two. If you don't have enough to completely fix a bad spot don't use it at all until you have enough product. Otherwise you will semi-seal up the surface and the new product will not penetrate the surface. I left the patches to dry overnight but if the surface is hard and not tacky after 2-3 hours you could lightly sand if needed and putty could be applied. Don't use heat to accelerate the drying process in the first hour or the penetration will not be as deep. A hair dryer will speed up the process though if the wood was good and dry before treating it with the j-b weld product. Acetone will clean up any dripping but also could affect the finish of the surface you are trying to clean, so the best technique is to mask as needed and watch for drips for the first 5 or 10 minutes. A throw away brush is what I recommend. After trying to clean up a brush I used with this stuff I spent more on acetone than the cost of the brush, let alone the time. Have fun and be prepared to be amazed.

### ⭐⭐⭐⭐⭐ Review
*by D***E on 16 April 2025*

this works great.

### ⭐⭐⭐⭐⭐ Review
*by A***A on 8 June 2025*

This worked like magic. I used it on the somewhat rotten wood then filled it with putty and painted the wood. It saved the fence and saved a lot of money.

## Frequently Bought Together

- J-B Weld 40001 Wood Restore Liquid Hardener - 16 oz., Original Version
- Gorilla All Purpose Wood Filler, Natural Finish, 16 Ounce Tub (Pack of 1) - Water Resistant for Indoor or Outdoor Projects and Repairs
- J-B Weld 40006 Wood Restore Premium Epoxy Putty Kit - 32 oz.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-26*