---
product_id: 47889650
title: "Ronseal Wet Rot Wood Hardener 500ml"
brand: "ronseal"
price: "A$41"
currency: AUD
in_stock: false
reviews_count: 13
category: "Ronseal"
url: https://www.desertcart.com.au/products/47889650-ronseal-wet-rot-wood-hardener-500ml
store_origin: AU
region: Australia
---

# Covers up to 2 sq. meters per 500ml Dries in 2 hours Strengthens rotten wood deeply Ronseal Wet Rot Wood Hardener 500ml

**Brand:** ronseal
**Price:** A$41
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Save your wood, save your style — repair like a pro, not a procrastinator!

## Quick Answers

- **What is this?** Ronseal Wet Rot Wood Hardener 500ml by ronseal
- **How much does it cost?** A$41 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/47889650-ronseal-wet-rot-wood-hardener-500ml)

## Best For

- ronseal enthusiasts

## Why This Product

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

## Key Features

- • **Ergonomic & Easy Use:** Designed for effortless brushing and application, making DIY feel like a pro job.
- • **Versatile Application:** Perfect for doors, windows, frames—inside or outside—because your home deserves flexibility.
- • **Deep Penetration Power:** Soaks deep into wet rot to reinforce and stabilize wood from the inside out.
- • **Fast-Track Restoration:** Dries rock hard in just 2 hours, so your repair projects move at millennial speed.
- • **Sustainable Wood Rescue:** Save and restore instead of replace—join the eco-conscious wave of smart home renovators.

## Overview

Ronseal Wet Rot Wood Hardener 500ml is a quick-drying, deep-penetrating solution that stops wet rot spreading and hardens damaged wood within 2 hours. Suitable for indoor and outdoor use on doors, windows, and frames, it covers up to 2 square meters per bottle and provides a strong base for filling cracks, helping you restore rather than replace wood with professional ease.

## Description

From the manufacturer Ronseal Wet Rot Wood Hardener 500ml Stop wet rot spreading and make your wood hard again so it can be easily repaired. Suitable for doors, windows and frames. Can be used inside or outside. Don’t replace rotten wood, repair it Dries in two hours Sets rock hard Soaks in deep and strengthens rotten wood Provides a strong base to begin filling cracks and holes How to strengthen wet rot wood Before you start Wear protective gloves to avoid getting hardener on your skin. Open your doors and windows for added ventilation. Remove loose or crumbling wood and make sure the area is dry. For the best repairs, drill small holes into the wood so hardener can get in deeper. Application Give the tin a thorough shake. Pour some of the hardener out into the plastic lid. Apply it with a paint brush. Make sure you get enough on so that it completely soaks into the rotten wood. Leave it to dry for two hours. Scrub with a wire brush to get rid of any excess hardener.

Review: This product does work very well - This is a good product that does work would use this product again
Review: This will save your rotted wood, then just use some wood filler to make good. - Really does restore rotted wood. Great saviour.

## Features

- Causes serious eye irritation.
- Highly flammable liquid and vapour.
- May cause drowsiness or dizziness.
- Repeated exposure may cause skin dryness or cracking.
- The Ronseal Wet Rot Wood Hardener comes in the following
- Ergonomic design
- Easy to use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001GU2G6Y |
| Batteries Required? | No |
| Batteries included? | No |
| Battery description | Not Included |
| Best Sellers Rank | 7,309 in DIY & Tools ( See Top 100 in DIY & Tools ) 49 in Wood Fill 864 in Hand Tools (DIY & Tools) |
| Colour | Red |
| Coverage | covers up to 2 sq. meters per 500ml |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,773) |
| Date First Available | 1 May 2007 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Finish | Matte |
| Included Components | 1 x Ronseal Wet Rot Wood Hardener 500ml |
| Installation method | Brush |
| Item Package Quantity | 1 |
| Item Weight | 114 g |
| Item model number | 32042 |
| Manufacturer | Ronseal |
| Material | Wood |
| Part Number | 32042 |
| Product Dimensions | 10 x 4 x 15 cm; 114 g |
| Size | 500ml |
| Special Features | Quick Drying |
| Volume | 0.5 Litres |

## Product Details

- **Brand:** Ronseal
- **Colour:** Red
- **Material:** Wood
- **Model name:** 32042
- **Surface recommendation:** Wood

## Images

![Ronseal Wet Rot Wood Hardener 500ml - Image 1](https://m.media-amazon.com/images/I/31-PYFhoUFL.jpg)
![Ronseal Wet Rot Wood Hardener 500ml - Image 2](https://m.media-amazon.com/images/I/31j2TuHrjbL.jpg)
![Ronseal Wet Rot Wood Hardener 500ml - Image 3](https://m.media-amazon.com/images/I/41Eep8BtCFL.jpg)
![Ronseal Wet Rot Wood Hardener 500ml - Image 4](https://m.media-amazon.com/images/I/41jPnTSRZZL.jpg)

## Questions & Answers

**Q: An outdoor painted sill has some areas of decay. I can gauge out the decay. Shall I treat the entire sill with this product?over the paint?**
A: Make sure you gouge out all the decay, and bear in mind that even if the exterior of the sill is good, underneath / inside might be rotten.  (If in doubt, take more out rather than less.)  Sand off surrounding areas of paint using coarse sandpaper.  Drill a few very small holes (or gouge out slots) which will help the hardener penetrate.  Then let everything air-dry for a couple of days.  Only then apply the hardener (wear latex gloves and don't get it on anything, as it's vicious stuff).  Best let it dry for 72 hours.  I then always apply more and leave it for another 3 days.  A pain to have to wait, but it works.  Make sure you then use the super-tough two part Ronseal filler (green tub), not normal wood filler (purple tub or tube): if you use the latter, and if there's the slightest bit of rot left in the wood, the filler will never harden.  The two-part stuff is extremely good but you need to work quickly as it cures very fast!

**Q: can you paint over Ronseal Wet Wood Hardener**
A: My experience is no. I applied the hardener to all my window cill, then filled some small areas with the Ronseal epoxy filler, sanded and painted with oil based primer/undercoat then with oil based top coat. One year later the paint was peeling over the areas not filled but not peeling the areas filled. The hardener was beneath the epoxy filler so wasn't in contact with the paint. The rest of the window I painted the same way but without the hardener and that held well.

**Q: Can this be used on rotten floor board? Under the bath which was caused by a leak , I am trying to figure out the best way to prevent and repair .**
A: I used it on rotten wood that clad the overside of the dashboard on my motorhome. The condensation from the windscreen had accumulated over 23 years! The liquid worked perfectly. When dry, I coated the wood in yacht varnish, and that worked as well. Maybe you should cover under your bath in thin marine ply to finish.

**Q: I have a solid wood worktop around my sink that has started to blacken, would this and the natural wood filler be the right choice to repair?**
A: The wood blackening is due to Mold. If this wood is also soft (wet rot) it will need removing down to sound wood. Using the wood hardener will harden the sound wood, then the filler can be applied. However, the visual effect will not be good and being a wet environment, it is likely the mold may eventually come back.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This product does work very well
*by P***A on 22 November 2025*

This is a good product that does work would use this product again

### ⭐⭐⭐⭐⭐ This will save your rotted wood, then just use some wood filler to make good.
*by G***Y on 18 November 2025*

Really does restore rotted wood. Great saviour.

### ⭐⭐⭐⭐ They leave out the warnings
*by T***N on 18 October 2025*

They leave out the warnings on the listing about the harmful fumes, how you need to call poison control if you breath in the fumes and how it can irritate your eyes, throat so this nasty product is getting binned.contains High concentrations of Acetone

## Frequently Bought Together

- Ronseal Wet Rot Wood Hardener 500ml
- Ronseal 35304 High Performance Wood Filler - Natural 550g

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-22*