Barrettine Premier Wood Preservative - 5L

  4.9/5.0 (1203 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.

1203 customer reviews
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
Dwisott by David Slater

Does what it says on the tin

Reviewed Clear on: 01/12/16
Easy to apply great finish and good protection by Philip Mason

This is second time purchased this product and had no reservation about buying it again. Used on Shed and summer house, very easy to apply leaves a smooth finish and pleased to how it stands up to the extreme weather conditions especially the summer hot sun.

Reviewed Summer Tan on: 30/11/16
Excellent coverage by CJ Mason Building Contractors

We got excellent coverage, nice and easy to use. As good as, if not better, than the market leader.

Reviewed Clear on: 25/11/16
Excellent coverage, by CJ Mason Building Contractors

We got excellent coverage, the colour was good, nice and easy to use. As good as, if not better, than the market leader.

Reviewed Holly Green on: 25/11/16
Excellent service, fast delivery by CMK

Product very good (but the original formulation of this product was easier to apply).

Reviewed Dark Brown on: 24/11/16
Quality product by R.Garrett

Quality product, with good service

Reviewed Cedar Red on: 22/11/16
Had no problem applying the product and it dried out to a nice golden colour I used approximately 16 litres which covered the area close to the coverage detailed on the can by Mr Michael Thomas

Although more expensive than some fencing products on the market you get what you pay for. In appearance it looks far superior to any other product and I'm sure will be longer lasting. It is easy to apply and penetrates into the roughest of surfaces. The first coat sealed the timber really well and consequentially the second went a lot further.

Reviewed Golden Brown on: 20/11/16
Perfect for the job by Lisa Setter

Easy to apply. So good, I bought another two tins

Reviewed Clear on: 18/11/16
Easy to use by Andrew Hollamby

The information about this product and how to use it are clear and concise. It went on easily and dried quickly. I hope it is as effective as the information suggests.

Reviewed Clear on: 17/11/16
Great stuff by Peter Morris

this wood treatment i think is one of the best around , iv used it for some years . I like the colour and it is easy to apply , one down point the price has gone up quite a bit this year . when i asked about this BARRETTINE to there credit rang me and they exsplaned it was down to a goverment rule .

Reviewed Summer Tan on: 17/11/16
Applied 3 coats of the Barrettine and it looks good by Gordon Gooch

After applying the 1st coat it did not have a lot of depth or colour, but the 2nd and 3rd coat changed all that......Top marks

Reviewed Golden Brown on: 16/11/16
Great product by Vanessa Blackman

Good coverage , works great as a water proofing . Only slight downside smell lingers for a couple of weeks. Overall a great product

Reviewed Clear on: 14/11/16
This is an excellent product and was exceptionally easy to use by Katrina McGhie

Great product, went on well, great coverage. Lovely colour, not too dark red and dried quickly.

Reviewed Cedar Red on: 13/11/16