Ronseal Decking Oil 5L

  4.9/5.0   1584 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 a decking restorer or reviver gel
  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.

1584 customer reviews
Does what it says on the tin by Vic Gianferrari

This is a genuine Ronseal product sold by Wood Finishes Direct at a substantial discount to the main DIY outlets. I used it on the outside decking having first cleaned the surface with a power washer. After allowing the decking to dry I applied one coat with a 3" brush. This first coat of the product soaked into the decking almost immediately and was very soon touch dry. I was unable to complete the whole area because I ran out of product but noticed how effective it was when it rained a day or so later. Rain was repelled from the section that had just one coat of Ronseal Decking Oil whilst the untreated area quickly became wet as the rain soaked in. I replenished supplies, buying a second 5 litre tin and completed the task. There has been substantial heavy rain since I treated the decking and there has been no water penetration. My decking was new 3 years ago and this is the first treatment. I am hoping it will last 3 years before it is necessary to repeat the 2 coat process. I would recommend this product and would further recommend buying from Wood Finishes Direct

Reviewed Natural on: 15/07/17
First use by Stephen Higginbottom

Seems to cover well. Time will tell. 3* because it's only been down for 2 weeks.

Reviewed Natural on: 14/07/17
Done job great by Scott Mcdonald

Done job great got colour I wanted and water proof decking protected fantastic

Reviewed Natural Oak on: 13/07/17
A good product by Pete Neville

A good product, a good price and excellent delivery timing.

Reviewed Natural on: 12/07/17
A great product by JOHN Broughan

does what it says on the tin 5 stars.

Reviewed Natural Oak on: 12/07/17
Fast efficient service by Sylvia Richards

Excellent product at a competitive price

Reviewed Natural Oak on: 12/07/17
Great product and colour by Tom Cairns

Great on new and older decking that is not to dark a finish

Reviewed Natural Oak on: 11/07/17
Fast, efficient and reliable service by Mrs Diane Macpherson

Does just what it says on the tin...

Reviewed Natural Pine on: 10/07/17
Have not used the product as yet so cannot give a comment by ARTHUR

I am unable to say because I haven't used the decking oil as yet. It looks the same item I bought previously so should be OK.

Reviewed Natural Cedar on: 10/07/17
Easy to apply and lovely finnish by Amy

Would recommend.

Reviewed Natural Pine on: 10/07/17
Roseal decking stain by Mr Richard Rees

Very competitive prices and prompt delivery.

Reviewed Natural on: 09/07/17
Brilliant product by Richard Glass

I brought this product because of The quick drying time very impressed With this product.

Reviewed Natural on: 09/07/17

Great product looks brilliant easy to apply

Reviewed Natural on: 09/07/17
We have brought this item a few times now Service and decking oil fabulous by Mrs Sandra Seward

Easy to use and has great finish. Well please.

Reviewed Natural Oak on: 08/07/17
Excellent product on my second tin by Anthony Grey

On my second tin love this product very good value for money

Reviewed Natural Oak on: 08/07/17


Reviewed Natural Oak on: 07/07/17

as they say does what it says on tin very good

Reviewed Natural Cedar on: 07/07/17

Excellent product

Reviewed Natural on: 05/07/17
Still has a stain in it by James Leveron

Thought this would be clear but has a colour to it. Had just cleaned an old deck and needed to protect it. Came out darker than I wanted as was still quite dark from years of sun and rain. But still did a great job. Would still buy more

Reviewed Natural on: 04/07/17
Great product by James Leveron

Great price and very quick delivery at 2 days. Well pleased with the order

Reviewed Natural Cedar on: 04/07/17
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