Ronseal Ultimate Protection Decking Oil

  4.9/5.0   431 reviews

You'll need enter area above for 2 coats (Recommended)

Wood type and application can vary coverage

  • A tinted, water-based decking oil suitable for bare, pressure treated or preserved decking
  • Perfect for all smooth and grooved, softwood and hardwood decking
  • Offers up to twice the resistance as standard decking oils
  • Excellent water repellency, rainproof in just 90 minutes
  • Penetrates deep into the wood to provide a long lasting finish
  • Replaces natural oils lost through weathering
  • Nourishes the timber to help prevent cracking, splitting and warping
  • Available in a range of natural wood tone colours
  • Low V.O.C
Brand Ronseal
No. of coats 2
Coverage Up to 9 per litre
Drying time 24 hrs
Size 2.5L, 5L
MPN 36938, 36933, 36934, 36935, 36936, 36939, 38524, 38526, 38525, 37300, 38528, 38527
GTIN 5010214869381, 5010214869336, 5010214869343, 5010214869350, 5010214869367, 5010214869398, 5010214872978, 5010214872992, 5010214872985, 5010214873005, 5010214872954, 5010214872961

In order to satisfy all orders you may receive a different style tin to the one displayed (one includes a banner "4L + 25% FREE", the other looks like a standard tin. Rest assured, they are the same product, and the price shown is the promotional price (4L + 25% FREE).

Ronseal Ultimate Protection Decking Oil will leave decking protected and looking great for longer with a natural or tinted colour finish.

  • Have grooved decking? You'll normally need double the quantity. Our handy coverage calculator will help you choose the right amount

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 tanalised, pressure treated and preservative impregnated decking timbers.

New softwood decking

  1. Treat with Clear Ronseal Total Wood Preservative (as this is wax-free) for the best protection. (The coloured versions contain wax which will cause adhesion problems)
  2. If possible, preserve all sides including end grain 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 decking should be left to weather before treating.

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 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 small test area before starting any project and follow the manufacturer's instructions on the tin at all times. Do not apply in damp conditions, when rain is likely, or when are temperatures below 10℃.

  1. Shake the tin thoroughly before pouring the entire contents into a suitable metal or plastic container; if using more than one tin mix them together (Do not thin or dilute)
  2. Apply liberally to ensure that even penetration and complete coverage of the decking is achieved
  3. Treat 3-4 decking boards at a time to avoid overlap marks
  4. Redistribute any excess oil along the decking boards or wipe off with a clean cloth
  5. Allow 4 hours drying time between coats
  6. Apply an even second coat as above

Regular Cleaning

To preserve the oiled finish for longer, we recommend that wooden decking is swept with a stiff broom on a regular basis to remove loose leaves, dirt and other organic matter. This prevents a build up of organic matter that can settle on the deck and in the grooves, which can degrade and damage the finish and decking timbers over time.

Deep Cleaning

For deep cleaning, use Ronseal Decking & Garden Cleaner.


Inspect the finish on an annual basis and apply a fresh coat of oil as and when required.


Stubborn marks and stains may require a light sanding before re-applying a thin coat of Ronseal Ultimate Protection Decking Oil to the affected area.

431 customer reviews
Easy to apply by Carol Bingham

Decking oil in my experience lasts far longer and applies better than the decking stains and comes in various colours

Reviewed 5L, Dark Oak on: 30/01/18
Very quick dekivery by John Howarth

2 cans of decking oil delivered within 48 hours of ordering. Just waiting now for Spring to use the oil. Certainly a lot cheaper than a large retailer

Reviewed 5L, Natural on: 12/01/18
Brilliant by Mr M Moss

Fantastic, top class product at a very good price.

Reviewed 5L, Teak on: 10/01/18
Bought in advance of needing it Will use late Spring, but see review of delivery below by Graham Vine

LISTEN UP. It’s not unusual to hear or read that someone is dissatisfied with a courier delivery. I bet you won’t hear complaints about a Wood Finishes Direct delivery! Time after time after time their goods are delivered on time, undamaged and the delivery driver with a smile on his face. PERFECT!!

Reviewed 5L, Natural on: 05/01/18
Great service at great price by Joe F

Product is easy to use and very good value

Reviewed 5L, Teak on: 03/01/18
Less than half the price than at B&Q by Tim Johnson

Lovely stuff. Covers so easily and leaves a non oily bright and enhancing finish.

Reviewed 5L, Natural on: 20/12/17
Good coverage by Tim Johnson

Good coverage from 5 litres > Would buy again

Reviewed 5L, Dark Oak on: 20/12/17
Quick easy job by Keith Barr

Saved a deck that looked like it soon needed replacing. Should have used it from day one.

Reviewed 5L, Natural Oak on: 07/12/17
A good texture oil, very pleased by Mr P Rymill

A good texture oil, ideal for our summer house

Reviewed 5L, Natural Cedar on: 04/12/17
Helpful service and prompt delivery by Henry Ruffell

Can't say more than that it really is true that it does what it says on the tin.

Reviewed 5L, Natural Pine on: 29/11/17
Wax for sheds by David Gillan

The words that start the instructions for use strike fear into the heart of people who live on the West of Scotland in a dismal summer, ‘Apply on a warm dry day’, argg. However, we did get a day as near to that as possible here and went for it. The two of us treated a 10 x 6 shed in about an hour albeit only one coat. The morning after I checked and the rain which had fallen over night was sitting on the shed like that on a waxed car, cant wait to apply some more.

Reviewed 5L, Natural on: 25/11/17
Used it to seal decking and needed a coat again after some years by D Budd

Happy with product. Does what it promises.

Reviewed 5L, Natural on: 20/11/17
Excellent by Matt Sharpe

Easy to use and great to watch the rain rolling off it.

Reviewed 5L, Natural on: 11/11/17
Great product does exactly what it says on the tin by Jiten Mistry

Great product...does exactly what it says on the tin. Furthermore for oil, it is also very easy to clean off the brushes.

Reviewed 5L, Natural on: 10/11/17
Does what it says on the tin! by Michael Lomax

Does what it says on the tin!

Reviewed 5L, Natural Oak on: 08/11/17
Very easy to use and it totally repels the rain by Rita Garland

Very easy to use and it totally repels the water. So much cheaper to buy from Wood Finishes Direct too.

Reviewed 5L, Natural Oak on: 05/11/17
Great and did the job nicely by Alexandra Campbell

Easy to apply and makes the decking look new again.

Reviewed 5L, Natural on: 04/11/17
Excellent by Alexandra Campbell

Easy to apply and does what is says on the tin.

Reviewed 5L, Natural Cedar on: 04/11/17
Will be purchasing this very year by Michael Lynch

Was very pleased with the product the service was excellent

Reviewed 5L, Natural on: 01/11/17
Really does what it says on the tin by Glynis Aherne

Easy to use and made the decking look like new.

Reviewed 5L, Natural Pine on: 31/10/17