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External Oak Colours

Treatex External Oak Colours (Virgin & Regency) have been developed as a base coat to treat timbers such as Oak and Idigbo. Suitable for use externally and internally, they provide high class UV protection that leaves the wood looking natural. Both are based on the same natural sustainable oils we currently use in our highly successful Hardwax Oil range including a modified alkyd resin, linseed oil and waxes, with an addition of siccatives for faster drying times.

42.54105.31Select options This product has multiple variants. The options may be chosen on the product page

  • To be applied as a base coat
  • Contains UV inhibitors
  • Suitable for indoor and outdoor use
  • Free from lead and cobalt
  • UV and water resistant once finished with Treatex UV Oil
  • Virign oak is similar to ‘Light Oak’ & Regency Oak is similar to ‘Medium Oak’ in colour.

Suitable for: internal and external use
Recommended timbers:  Oak and Idigbo
Applications: doors, windows, fascia boards, sheds, porches

1L will cover approximately 20m² in one coat depending on the timber and method of application.
2.5L will cover approximately 50m² in one coat depending on the timber and method of application.


Prior to application all previous finishes must be removed as Treatex products work by absorption. Surfaces should be sanded with 100-120 grit sandpaper and all external sharp edges should be rounded to approximately 3mm (5mm on cill front). The timber must have a moisture content below 18% and the ambient temperature must be greater than 8º𝖼. The tin should be kept at room temperature prior to use. When using Treatex External Oak, we advise that sufficient product is purchased to complete the whole project and where more than one tin is required it is advisable to mix them together before use. We strongly recommend a trial application prior to starting a project.


Stir the tins thoroughly and using a good quality brush (Treatex brushes are available), work along the end grain, applying 1 even coat of Treatex External Oak to all surfaces. Pay particular attention to the end grain by a applying a 2nd application whilst the finish is still wet on these areas. Allow to dry for at least 12 hours before applying two coats of Treatex UV Oil

  • Treatex brushes and rollers are available.
  • Wet brushes and rollers can be cleaned with Treatex Thinner or white spirit.
  • Store tins in a cool and frost free environment. Unopened tins will last for five years. Once tins are opened, transfer contents to smaller airtight container.

Item No. 31500 (Virgin Oak) 31510 (Regency Oak)
Sizes: 1L (e), 2.5L (h)

NEWS – Treatex External Oak has changed!

After extended testing we are pleased to announce a major development to the Treatex External Oak Protection system.

Whilst this new development works in the same way to Oak Protection, it has gained other added benefits, mainly that it can now be used on it’s on with most species of timber, removing the need for the 1st colour coat, providing suitable UV protection in a clear finish. To reflect this, we have decided to rename the product Treatex UV Oil.

Treatex UV Oil is a high quality clear oil which offers some UV protection. We still recommend that when treating Oak first, you apply a coat of either Virgin or Regency Oak Colour before finishing with 2 coats of Treatex UV Oil.

Treatex UV Oil can also be applied over Treatex Exterior Oils and Classic Colour Collection.

If you have any questions we can be contacted via the Live Chat in the bottom right of the website during open hours or via email/contact form any other time.

You can see more information on UV Oil here.

Click To Call: 087 260 0440