Ronseal Decking Oil 5L

  4.9/5.0   1686 reviews
You'll need enter area above for 2 coats (Recommended)

Wood type and application can vary coverage

  • A solvent-based, tinted decking oil suitable for bare, pressure treated or preserved decking boards
  • High-build offers good year round performance
  • Excellent water repellency, beads rain thereby stopping water ingress
  • Helps to prevent mould, mildew and funghi growth
  • Oil ingredients help feed the decking to reduce warping, swelling, drying and splitting
  • Contains UV filters to protect against sun damage
  • Enhances the natural grain of the timber
  • Solvent-based formulation for deep penetration
Brand Ronseal
No. of coats 2
Coverage Up to 10 per litre
Drying time hrs
Size 5L
MPN 35190, 35803, 35804, 35805
GTIN 5010214867479, 5010214867486, 5010214867509, 5010214858057

Ronseal Decking Oil will leave softwood and hardwood decking protected and looking great for longer with a natural colour tinted or clear decking oil finish.

  • Have grooved decking? You'll normally need double the quantity. Our handy coverage calculator will help you choose the right amount
  • Looking for an anti-slip finish? Apply one coat of Ronseal Decking Oil then overcoat with one coat of Osmo Anti Slip Decking Oil

Decked areas to be treated should be clean, dry and free from traces of dust, dirt, oil, grease, wax and silicone.

New Decking Preparation

For all bare wood decking including tantalised, pressure treated and preservative impregnated decking timbers.

New softwood decking

  1. Treat new softwood decking for the best protection
  2. If possible, preserve all sides including end grain with Ronseal Total Wood Preservative prior to installation
  3. Sweep the decking with a stiff broom to remove all traces of surface dirt and debris
  4. Use a suitable decking cleaner if required before oiling

New hardwood decking

Hardwood decking usually requires a period of weathering to allow the surface grain to open up. This allows for better absorption of the decking oil. Check the decking manufacturer's guidance on how long their wood deck should be left to weather before applying decking oil.

Old Decking Preparation

Old coating type finishes such as decking paints, varnishes and varnish type stains must be fully removed back to bare wood before oiling. Depending on the condition and type of finish, it may require more than one attempt to fully remove the old coating.

  1. Ensure that all 'coating' type finishes have been fully removed to expose bare wood by either jet washing or using a dedicated decking stripper and remover
  2. Clean old decking oil finishes thoroughly with Ronseal High Performance Decking Cleaner Sachets
  3. For garden decking affected by mould, algae or moss, or to restore the colour of decking that has turned grey or silver over time, use Ronseal Garden Cleaner
  4. For the best protection, treat with a suitable exterior wood preservative
  5. If possible, preserve all sides including end grain prior to installation
  6. Sweep the decking with a stiff broom to remove all traces of surface dirt and debris before oiling

Always do a test area before starting any project to check suitability and compatibility. Do not apply Ronseal Decking Oil in wet conditions or if rain, frost or snow is likely before the product is dry. Decked areas should be completely dry before application. Follow the manufacturer's instructions on the tin at all times.

  1. Stir thoroughly before and periodically during application
  2. Apply a thin, even film of decking oil with a suitable decking applicator
  3. Work the oil in to the surface of the decking boards
  4. Wipe off any excess oil with a clean lint-free cloth
  5. Allow the first coat to dry in accordance with environmental conditions
  6. Apply a second coat as above
  7. Allow 24 hours to dry completely before heavy use

Two coats of Ronseal Decking Oil is usually sufficient but this may vary depending on the type of decking timber and its absorbency.

Regular Cleaning

To preserve the look and performance of the oiled finish for longer it is recommended that decked areas are swept with a stiff broom on a regular basis. This is to remove loose leaves, dirt and other organic matter that can settle on the wood deck and in the grooves, which can degrade or damage deck finishes and decking timbers over time.

If signs of mould or algae appear, use an appropriate decking cleaner. The condition of wooden decking should be inspected on a regular basis and treated as required.

Deep Cleaning

Scuff marks, stains, grease and other surface contaminates can normally be cleaned with a decking cleaner. Stubborn marks and stains may require a light sanding and a thin application of oil to restore.


High foot traffic areas that start to appear worn or tired, or that are losing the ability to repel water effectively can be easily restored. First clean with a suitable decking cleaner then re-apply a thin coat of Ronseal Decking Oil to the affected area for an invisible repair.

Q. I'm looking for a clear Ronseal Decking Oil, is the 'Natural' option clear?

A. In short yes. The 'natural' version of this product is the Ronseal Clear Decking Oil. The oil has it's own natural colour and will enhance the natural grain and colour of decking when applied. For example, it will draw out the natural warm wood tones of lighter softwood decking and enhance the deeper brown tones of hardwood decking.

1686 customer reviews
Excellent product, goes on very well by Mr Craig Harland

This is an oil rather than a paint and will need more than 1 application to get the depth of colour. But this is absolutely worth doing. We have rich colour on our decking, seems really waterproof and non-slippy. Would defo buy again.

Reviewed Natural Cedar on: 11/09/17
Great price! by Kimd

Does what it says on the tin. Saved a fortune when compared with certain large retailers.

Reviewed Natural Oak on: 11/09/17
Great product and great deal by Terry

Quality product, great price and quick delivery.

Reviewed Natural Pine on: 10/09/17

very good service staff very friendly and helpful would recommend this company very happy with the results after applying the oil on our decking

Reviewed Natural Pine on: 10/09/17
This company will always be my first point of call for all wood finishing products by Diane Butler

I inherited a large area of worn decking with our new home. I made many very expensive and time consuming mistakes whilst attempting to restore it until I found this product and more so this company. My decking is now looks great. I would describe it as having a new, retro, vintage, shabby chic finish. The oil definitely repels water. In fact, water now simply sits on it until it evaporates. The wood now has a great semi, non slip, sheen. I love it.

Reviewed Natural on: 09/09/17
Great Product by Angela Anderson


Reviewed Natural Pine on: 09/09/17
Received rapidy and as expected by John Bailey

changed from deciong stain to decking oil and result much better. lovely deep woodcolour just right.

Reviewed Natural Cedar on: 08/09/17
Good, easy to use product by Brian Mitchell

The product is excellent and does what it says on the tin.

Reviewed Natural on: 06/09/17
Good product, good value by Mr K Waller

Did what it says on the tin. Calculator for volumes was spot on.

Reviewed Natural Pine on: 05/09/17
Excellent protection for wood such as decking by Mr Richard White

This oil based decking oil is very easy to apply. Much easier and quicker than water based version to apply.

Reviewed Natural on: 02/09/17

made our decking look great

Reviewed Natural on: 30/08/17
Great product by 28 JELLICOE Drive

Good value

Reviewed Natural Pine on: 30/08/17
Delivered on time, great price compared to DIY store by Andrew Mccluskey

Would buy again on price and service all there.

Reviewed Natural on: 29/08/17
Very good by Debbie Davies

Good coverage good and prompt delivery

Reviewed Natural Pine on: 28/08/17
Does what it says on the can!! by Jeremy Gale

Excellent product also excellent service

Reviewed Natural on: 28/08/17
Great product coats well by David Sheridan

This product was purchased to spruce up my large amount of decking after a garden re-vamp, it is very easy to control the product when using a brush it spreads and covers very well.

Reviewed Natural Cedar on: 28/08/17
Fast delivery and well packed by Stuart West-Gray

What can I say, they did what was required. Very fast delivery and the cans of oil were very well packed; I will happily be using again.

Reviewed Natural on: 28/08/17


Reviewed Natural Cedar on: 24/08/17
Did exactly what we needed it to by Julie Simpson

Great product - our decking looks fab!

Reviewed Natural Oak on: 24/08/17
Ronseal clear decking oil by David Jenkins

It's the best

Reviewed Natural on: 24/08/17