---
product_id: 47889100
title: "Ronseal 35304 High Performance Wood Filler - Natural 550g | Two-part repair compound for interior and exterior timber defects, suitable for drilling, fixing and planing after cure."
brand: "ronseal"
price: "€ 41.11"
currency: EUR
in_stock: true
reviews_count: 12
category: "Ronseal"
url: https://www.desertcart.hr/products/47889100-ronseal-35304-high-performance-wood-filler-natural-550g-two-part
store_origin: HR
region: Croatia
---

# Water resistant & weatherproof Supports screwing & drilling 30 min full cure Ronseal 35304 High Performance Wood Filler - Natural 550g | Two-part repair compound for interior and exterior timber defects, suitable for drilling, fixing and planing after cure.

**Brand:** ronseal
**Price:** € 41.11
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fix it once, fix it right — the pro’s choice for wood restoration!

## Quick Answers

- **What is this?** Ronseal 35304 High Performance Wood Filler - Natural 550g | Two-part repair compound for interior and exterior timber defects, suitable for drilling, fixing and planing after cure. by ronseal
- **How much does it cost?** € 41.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/47889100-ronseal-35304-high-performance-wood-filler-natural-550g-two-part)

## 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

- • **Built to last:** 800 PSI tensile strength ensures durable, long-term fixes
- • **Versatile application:** Perfect for interior & exterior wood surfaces, including windows & doors
- • **Rot & moisture defense:** Cures wet rot and prevents future damage for peace of mind
- • **Fast & flawless repairs:** Dries in just 30 minutes for quick project turnaround
- • **No shrinkage, no cracks:** Maintains a smooth, seamless finish every time

## Overview

Ronseal 35304 High Performance Wood Filler is a natural-colored, 550g paste designed for repairing and rebuilding rotten or damaged wood. It cures fully in 30 minutes, supports drilling and screwing, and offers water resistance with no shrinking or cracking. Ideal for both interior and exterior use, it effectively cures wet rot and prevents recurrence, delivering a durable, professional finish trusted by DIYers and pros alike.

## Description

Box Contains 1 x Ronseal RSLHPWFN550G High Performance Wood Filler 550g Natural

Review: Mix well and apply before it starts to dry out. - Great stuff. Does the job. Mix with epoxy. Apply and let it dry. Then sand to a smooth finish and paint. Great for any repair to wood.
Review: Costs more but it’s the best in the market - Perfect product and easy to use. Includes hardener and only mix what you need to use. More expensive but it’s the best in the market

## Features

- Causes damage to organs through prolonged or repeated exposure.
- Causes serious eye irritation.
- Causes skin irritation.
- Flammable liquid and vapour.
- Harmful if inhaled.
- Suspected of damaging fertility or the unborn child.
- Can be drilled, screwed or planed
- Rebuilds rotten wood
- Cures wet rot and prevents recurrence
- No shrinking or cracking
- For interior and exterior use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001GU2H6S |
| Best Sellers Rank | 522 in DIY & Tools ( See Top 100 in DIY & Tools ) 4 in Wood Fill 37 in Hand Tools (DIY & Tools) |
| Brand | Ronseal |
| Colour | Natural |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.4 out of 5 stars 942 Reviews |
| Full Cure Time | 30 Minutes |
| Full cure time | 30 Minutes |
| Global Trade Identification Number | 05010214538690 |
| Item Form | Paste |
| Item Weight | 127 g |
| Item form | Paste |
| Item weight | 127 g |
| Liquid Volume | 550 Millilitres |
| Liquid volume | 550 Millilitres |
| Manufacturer | Ronseal |
| Manufacturer Part Number | 35304 |
| Material | Wood |
| Maximum Gap Fill | 5 Millimetres |
| Model Number | 35304 |
| Number of Items | 1 |
| Surface Recommendation | Window, Door, Wood |
| Tensile Strength | 800 Pounds Per Square Inch |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Ronseal
- **Colour:** Natural
- **Full cure time:** 30 Minutes
- **Item form:** Paste
- **Item weight:** 0.28 Pounds

## Images

![Ronseal 35304 High Performance Wood Filler - Natural 550g | Two-part repair compound for interior and exterior timber defects, suitable for drilling, fixing and planing after cure. - Image 1](https://m.media-amazon.com/images/I/71yEqlfJQ+L.jpg)

## Questions & Answers

**Q: What is the difference between this and wood epoxy?**
A: It is a two pack wood filler rather than an epoxy.  It is ideal for filling gaps or making up areas where you have needed to cut out rot back to clean wood

**Q: Can this fix wood enough to not crack when its placed under heavy strain? I used a different bed filler and it came off after a single use**
A: It depends how much filler and how deep it is applied. The timber to be filled should be 'completely' dust free prior to filling. Don't put the filler in too thickly. Make a number of applications. When the filler is freshly mixed it is moister and adheres to the timber better. If it starts to get a bit stiff it is better to throw what is left away rather than try to use it. It is better to mix up several smaller batches.
Best Regards,

Rex

**Q: do I use primer on wood filler orunder coat**
A: Whatever you would use normally. Just treat the filler as wood.

**Q: would this work better than just using JB Weld to build up chipped off corners on a particle board speaker enclosure (i.e. not rot etc.)?**
A: I have no experience of JB Weld so can't comment on the comparison. The Ronseal should work but sanding off to precise corners (once fully dry) will be tedious. And you'll clearly need to paint / spray over afterwards.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Mix well and apply before it starts to dry out.
*by M***K on 8 June 2026*

Great stuff. Does the job. Mix with epoxy. Apply and let it dry. Then sand to a smooth finish and paint. Great for any repair to wood.

### ⭐⭐⭐⭐⭐ Costs more but it’s the best in the market
*by P***E on 26 June 2026*

Perfect product and easy to use. Includes hardener and only mix what you need to use. More expensive but it’s the best in the market

### ⭐⭐⭐⭐ Plastic Padding For Wood, With Yellow Colouring
*by P***S on 24 August 2015*

I got this to firm up a couple of rotten areas on our deck, after having already used Ronseal's wet rot treatment. As soon as I opened up the tub I recognised the smell and texture of the stuff: it's exactly like PlasticPadding "Chemical Metal ", save for the colour. And that explains why some people have been really happy with it, and others much less so. From a structural point of view, this stuff is brilliant: it sets rock hard very quickly, dramatically increasing the strength of the damaged wood, and I have no doubt that the repair will last for years. From an aesthetic point of view however, it could be a big disappointment. How the final repair looks comes down to two things: your skill in applying the stuff, and the colour, which is quite a warm yellow. In my case, I did a fair job of filling the gaps in the remaining sound wood (which isn't easy because the filler is very sticky - sticks to your fingers and whatever tool you use), grooved it to match the existing decking just before it set, and sanded it quite well afterwards. The colour however sticks out like a sore thumb. If you're going to be painting/staining it after filling then obviously the filler's natural colour won't matter, but otherwise you can pretty much guarantee that it's not going to match any exterior wood that has been exposed to the elements for a while. I'm just hoping that a bit of weathering will eventually make my repair less noticeable, but at least I'm confident that I've stopped the rot and that the wood is going to last for some years to come.

## Frequently Bought Together

- Ronseal 35304 High Performance Wood Filler - Natural 550g
- PC Products PC-Petrifier Water-Based Wood Hardener, 32 oz, Milky White 324448

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-19*