Barrettine Premier Wood Preservative - 5L

  4.9/5.0 (1216 reviews)
On-screen colours may vary according to different screen calibrations. We therefore always recommend applying a test area.
1 coat = Standard protection
Total: enter area
2 coats = Best protection
Total: enter area

Wood type and application method can vary coverage.

  • A solvent-based high-performance exterior wood preserver
  • Perfect for sheds, fences, decking, summer houses and other garden wood
  • Protects timber against wood boring insects, wood rotting funghi and blue stain
  • Contains wax and water repellent resins
  • UV fade resistant colour pigments
  • Deep penetrating formula for long lasting protection
  • Low odour
Brand Barrettine
No. of coats 2-3
Coverage Up to 6 per litre
Drying time 12 hrs
MPN WOBL005, WOCL005, WORC005, WODB005, WOGB005, WOHG005, WOLB005, WOST005
GTIN 5015861004284, 5015861070500, 5015861110503, 5015861090508, 5015861450500, 5015861500502, 5015861004017, 5015861170507

Barrettine Premier Wood Preserver is ideal for most exterior wood care projects including sheds, fences, exterior windows and frames, doors, carports, shutters, wooden garden gates and more. This product can be used as a standalone treatment or as a base-coat for a protective exterior wood oil or decking oil.

Please note: Barrettine Premier Wood Preservative contains a small amount of wax so is therefore not compatible for use with water based paints, varnishes and stains. If looking to paint, stain or seal exterior wood with a water based product, ensure that the wood is treated with a wood preservative that is oil, wax and silicon free such as Barrettine Premier Universal Preservative.

Ensure that wooden surfaces to be treated are clean, dry and free from surface dirt, debris and other surface contaminates.

New bare wood

  • If required, new bare timbre can be cleaned and degreased with White Spirit prior to application

Previously treated wood

  • Any surface coatings such as paints, varnishes and stains must be fully removed back to clean, bare wood by sanding or with a suitable stripper / remover
  • Wood that has been oiled in the last year should be allowed to weather for at least one year or until the wood preservative is able to penetrate through to the timber

Old untreated wood

  • Wood that has become decayed should be removed and replaced
  • Cut out and burn all decayed wood at least 45cm beyond the area of damage
  • Brush down the wood with a stiff broom or brush to remove any ingrained surface dirt and debris
  • Traces of mould, algae or fungi must be removed with a stiff brush or scraper
  • Areas that have been affected by mould, algae or fungi should be treated with fungicidal wash or mould and mildew cleaner prior to application

Always do a test area before starting any project and follow the manufacturer's instructions on the tin at all times. Shake or stir well prior to and during application to ensure a consistent colour.

  1. Only apply in temperatures of between 10℃ and 30℃
  2. Apply using a synthetic brush, roller or shed and fence spray system*
  3. For the best protection apply a minimum of 2 coats to rough / sawn and smooth timber
  4. Where possible, end grain should be dipped or given extra coats for additional protection
  5. Allow 12 hours drying time between coats

*Although the solvent content of this product can perish the washers and hoses of some spray systems, it can still be a time and cost effective way to treat large areas. We recommend that if using a spray system try to complete the project in one day. This said however, depending on the type and brand of sprayer, it may last longer than this.

Once dry and if desired, a suitable exterior wood oil can be applied. Always follow the manufaturer's instructions on the tin.

Wood treated with Barrettine Premier Wood Preserver can be easily maintained by applying a fresh maintenance coat on a yearly or 2 yearly basis as required.

Please note: If this product is over-coated with a clear decking oil or other exterior wood oil, it will last for up to 5 years. This is only if the exterior wood oil or decking oil finish is re-applied and maintained on a regular basis as per the guidance on the relevant product.

Q. Is this all I need to protect my summer house?

This product is commonly used on its own on sheds and fences and other exterior items constructed of rough wood, however for a total treatment we recommend over-coating with Barrettine Log Cabin Treatment or Clear Barrettine Decking Oil for added water repellency and weather protection.

If protecting the natural colour of the wood is important, use the clear preservative then overcoat with Osmo UV Protection Oil Extra or Fiddes Exterior High Build Wood Oil.

Q. Can I use Barrettine Wood Preservative on a chicken shed and dog kennel?

Barrettine Wood Preservative is perfectly safe to use on any surface that comes into contact with animals when dry. This includes but is not limited to dog kennels, chicken sheds and houses, horse stables and more. It's important to remember that this wood preservation treatment should be over-coated with a suitable exterior wood oil or decking oil. Animals should only come into contact with the surface of the wood when both the wood preserver and oil have fully dried.

1216 customer reviews
Does exactly what it says on the tin and more by C OWEN

Having used many other proprietary products over the years I find the Barrettine products are far superior and economical.

Reviewed Light Brown on: 11/02/17
Great seller by Garry Davey

Haven't actually used the product yet but based on the product reviews, delivery time and cost then I am sure it will do the job its designed for

Reviewed Clear on: 10/02/17
Great stuff by Nick The Shed

Easy to use, soaks in to planed timber really well and coverage pretty much as it said on the website. 2 coats of 'Clear' colour has only very, very slightly changed the shade of the new timber that I treated - so a good result.

Reviewed Clear on: 10/02/17
Quick and easy application Good coverage by Ian Cooper

Excellent product would use again and recommend!

Reviewed Clear on: 09/02/17
Excellent by Kathryn

good quality, perfect colour

Reviewed Light Brown on: 03/02/17
Very very prompt delivery by Harry Lawrence

Excellent coverage but not absolutely sprayable and colour a little off from that shown on web. Only to be expected though. Would definitely use again.

Reviewed Holly Green on: 03/02/17
Great service by Mr C.B

Fantastic service and fast well packed product

Reviewed Clear on: 02/02/17
Very easy to use by P King

Excellent finish

Reviewed Light Brown on: 01/02/17
Goes on easy by Don Clarke

Cannot say if it will fight off insect attack or rot until a few years have passed. It goes on well without unpleasant smell or fumes. Appears to soak in well and second coat glides on nicely, again only time will tell if it does what it says on the tin!

Reviewed Summer Tan on: 27/01/17
Good quality by Stephen Wild

Delivery excellent product is good, I have used it for a few years would not use anything else

Reviewed Holly Green on: 27/01/17
Excellant product which covers a large area by Rae Todhunter

Easily applied and good coverage. Should last a while before reapplying. Applied log cabin treatment as final finish. Pleased with result

Reviewed Clear on: 26/01/17
As described by Ms J Billington
Reviewed Clear on: 26/01/17
Great goes far by Dan Jacobs

To soon to tell if it's as good as stated but goes on well

Reviewed Clear on: 19/01/17
Has always made y summerhouse as good as new by John Pearson-hall
Reviewed Summer Tan on: 06/01/17
Unfortunately it doesn't have the same repellent as the woostain by Mr James Rowe

Disappointed with this product it was more expensive and has not fulfilled my expectations based upon the information discussed when placing my order

Reviewed Light Brown on: 30/12/16
A note from us...

Hello Mr Rowe,

Thank you for taking the time to offer some feedback on this product. It is a new formula and we are keen to hear what you felt the product was lacking or if any improvement could be made, and how it compared to the previous product if you have used it.

If you would like to discuss further please feel free to email me at and I am happy to help with any questions you may have.

Kind Regards Samantha.

Easy to apply,soaks in well by Simon Hill

good product

Reviewed Clear on: 18/12/16
Easy to apply by HARRY J BOWERS

does what it says!

Reviewed Golden Brown on: 17/12/16
Very good by Sarah

Really good !! Soaks into timber very well , we used it along side log cabin treatment the rain now beads on the surface .

Reviewed Clear on: 16/12/16
Excellent by Enid Isherwood

Looking for a product to use on our new summer house, this was recommended by the manufacturer. Very pleased with it, goes on well leaving a lovely finish. The process of ordering and delivery was first class, would definitely by from you again

Reviewed Golden Brown on: 16/12/16
Great product by Lisa Setter

Perfect for the summerhouse interior

Reviewed Golden Brown on: 06/12/16