232 people bought this in 48 hours
Ronseal High performance Clear Hardener, 500ml
Under 18 yearsProduct details
Product information
Ronseal Wet Rot Wood Harder Reinforces decayed wood. Creating a solid base for filling.
- Guarantee - Statutory
- Suitable for Decayed wood
- 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.
- 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. Clean your tools with white spirit.
- Instructions for Use - 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. Clean your tools with white spirit.
Features and benefits
- Dry in just 2 hours for quicker repairs
- Sets rock hard
- Repairs rotten wood, creating a solid base
- Soaks in deep and strengthens rotten wood
- Provides a strong base to begin filling cracks and holes
Health and safety
Please note that this item has additional safety or regulatory datasheets available. The product may have possible health and safety hazards covered in these documents. Refer to the container for full information and always follow the instructions.
DetailsSpecifications
| Brand | Ronseal |
|---|---|
| Colour | Clear |
| Location | Interior & exterior |
| Volume | 500ml |
| Application method | Brush |
| Number of coats | 1 |
| Container type | Tin |
| Base | Solvent-based |
| VOC level | Very high |
| Durability | Heavy duty |
| Washable | Wipeable |
| Product code | 5010214538713 |
Safety Information
Manufacturer / EU responsible person
Reviews
4.57 / 5(70 reviews)Stevo1966 - 5 / 5 - 17/06/2025
Does exactly what it says on the tin
Did the job I needed it to do. Product is a godsend
Nectar - 5 / 5 - 16/06/2025
Great stuff for rotting wood
Super stuff, used to restore a rotting shed base. Got through a couple of bottles but the wood is now rock solid.
GM1875 - 5 / 5 - 15/06/2025
Lives Up to Its Name
This hardener worked exactly as promised. It cured quickly and bonded extremely well when used with the wood filler. It gave the repair a solid, durable finish that felt much stronger. Ideal for tougher jobs where lasting strength is important. Very impressed with the performance.
Hilary 333 - 5 / 5 - 07/06/2025
Great product
I used this on parts of a shed that were starting to rot. I then filled with Ronseal wood filler and the shed is good as new. The hardener gets sticky so rinse out promptly with white spirit.
Loube - 5 / 5 - 04/06/2025
All good
Seems pretty good. Dried to slight sheen. Dried pretty quickly.
Chief1 - 5 / 5 - 29/05/2025
Good wood hardner
Bought for wood rot Garage door has hardened up wood as required
Amateurtablefixer - 5 / 5 - 24/05/2025
Saved a garden table from the tip
Excellent for stabilising soft or rotting areas on aged wood. It soaked in well and gave my 11-year-old garden table a much firmer feel, especially around flaky edges. Dries clear and quickly, giving a solid base for sanding and staining. A must-have for prepping older outdoor furniture before refinishing. A little goes a long way, and don't forget to clean brushes with hite spirit after.
RS654 - 5 / 5 - 19/05/2025
Did the trick
Hardened the wood enough for me to clear out the rotten bits and fill in, to prolong the life of the window frame. It was quick and easy to use and will hopefully enable me to put off the replacement window for a few years 🤞🏻
Spiderlish - 5 / 5 - 09/05/2025
Does exactly what it says on the tin
No joke - cracking stuff. I restored five wooden window sills with this. Really happy.
Ste2025 - 5 / 5 - 04/05/2025
Cleaner product
This cleaner really did the trick. It set really quick and hard and should prevent further cracking.