Ronseal Wood Filler Review

Updated Jul 20, 2023 | Posted Feb 24, 2023 | Product Review, Sundries | 0 comments

As a professional decorator, wood filler is something I use on a regular basis, whether it be internal or external. However, it was only when I started experimenting that I realised how much difference in quality there is between the different brands. In this blog, I’m going to talk about Ronseal Wood Filler as a whole and I’ll be brutally honest in my findings.


Ronseal High Performance Wood Filler


This is a 2-part timber repair product consisting of an activator which you add to the filler to make it turn rock hard. It is designed to cope the swelling and contracting of external timber but can also be used inside. Available online, you can buy this filler in different shades to suit the colour of the finish you are trying to achieve. Ronseal High Performance Wood Filler can be painted, or varnished over.

I may as well start by saying I don’t like this filler, but that might be because I have been spoilt in the past with better products like HB42 and Oxera. The Ronseal version contains styrene, which is quite a nasty co-polymer compound. This filler also slumps when you’re trying to use it, and it dries grainy.

One of my bug bears with Ronseal High Performance Wood Filler is its claim it can “fill any size hole”. This simply isn’t true for external timber. Yes, it does flex with the timber, but only to a certain point. If you use too much on one repair, that repair is likely to fail over time.


I would suggest paying a little bit more for HB42 if you just need a normal 2-part filler for general use. Available online.

If you aim to use filler outside and you want something that is going to last, then go for Oxera. This is expensive, but repairs come with a 10-year guarantee. It’s a million times better than Ronseal, or anything like it. Available online.


Ronseal Multi-Purpose Wood Filler

From a product I don’t like, to one I do. Ronseal Multi-Purpose Wood Filler is a pre-mixed filler available online in different shades. You can even buy it in tubs, mastic tubes, and squeezy dispensers to help with ease of application.

Ronseal Multi-Purpose is only a water-based wood filler, so don’t expect it to handle deep repairs. But, providing you know its limitations, you’ll get on well with this product.

Is Ronseal Multi Purpose Wood Filler a good product?

It is easy to apply, easy to shape, can be used in pin-holes, or even as a caulking system. It sands down well, and takes on stain or varnish as well as, or even better than the timber around the repair.


Ronseal Wet Rot Wood Hardener


This is a cool product. It’s a clear liquid you add to rotten timber to make it sound before you make your repair. It’s very thin, so it penetrates deep into the timber. It doesn’t work on server rot, so you still need to dig all that out first, but it does help make a solid base for your Ronseal Wood Filler. It also goes some way to preventing future rot.

You don’t need to use Ronseal Wet Rot Wood Hardener, but if it helps you make a long-lasting repair, I don’t see why you’d skip this step. Available online.

Ronseal Wood Filler Review – by Mike Gregory

Updated Jul 20, 2023 | Posted Feb 24, 2023 | 0 comments

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