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Choose Treatex Exterior Oils to achieve a premium finish for your outdoor wooden surface. Our Exterior Oil is ideal for adding the final touch to a range of home installations, including decking, wooden doors or cladding. Our water-repellent formula is designed to seep through timber surfaces, clinging to the wood capillaries and offering solid defence against the elements - all while preventing the development of cracks and swelling.
Treatex Exterior Oils also help to provide an effective weather resistant coating, where our formula is both waterproof and protective against UV light. Our impressive colour range includes a multitude of shades including champagne, bay and buckskin, so you’re guaranteed to find the perfect match for your space.

Contains natural pigments that provide excellent UV protection without obscuring the timber grain
Clear is a not a UV protective finish
Sheer is a clear finish with UV protection
Can be overcoated with Anti Slip Decking Protection or UV Oil
Clear can be applied over coloured options when applied to dekcing/walkways
Protects the timber from water ingress and silvering
Clear is not a UV protective finish
Sheer is a clear finish with UV protection
Suitable for use on children's toys
Best applied with a brush or roller
Product Specs
Usage/coverage
Suitable for: internal and external use
Recommended timbers: Suitable for use on most species of timber
Applications: doors, windows, fences, sheds, cladding, tables, kitchen cabinets and flooring (2 coats of hardwax oil recommended if using with a floor).
1L will cover approximately 15m² in one coat depending on the timber and method of application*
2.5L will cover approximately 37m² in one coat depending on the timber and method of application*
*Rough sawn timber can potentially increase consumption by a factor of 2 to 3.
Preparation/Application
Preparation
Treatex Exterior Oils work best on unfinished timbers. Previous finishes which stop Exterior Oils penetrating into the timbers (e.g. paints and other ‘closed’ finishes) must be fully removed prior to application. Previous porous finishes can be lightly sanded before over coating with 120 grit sandpaper, however, we cannot guarantee best performance when applying over an existing finish. When over coating a previously finished surface, a trial application is essential. Flaking or peeling finishes must be fully removed prior to application.
Ensure the timber is dry and free from possible contaminates e.g. algae, grease, dirt, dust etc. Leave exotic/dense/oily timbers e.g. Iroko/Bangkirai and pressure treated timbers to weather for at least 3 months or wash with warm, soapy water then rinse throughly and dry to remove resins. Timbers susceptible to mould and fungi should be treated first with a suitable preservative.
We advise that when using Exterior Oils, sufficient product is purchased to complete the whole project and when more than one tin is required it is advisable to mix them together before use. The timber must have a moisture content below 18% and the ambient temperature must be between 8oc and 25oc during application and drying. We strongly recommend a trial application prior to starting the project. Ensure that no rain is forecast before, during or after application or that timber is treated in a dry environment. We strongly recommend a trial application prior to starting the project.
Application
Stir tins thoroughly, before and during use. Use a brush, roller or spray to evenly apply Treatex Exterior Oils in the same direction as the wood grain. Pay particular attention to the end grain, where you should apply liberally. After approximately 12 hours the first coat can be overcoated. Apply with a brush or roller a second coat of Exterior Oils. After the second coat leave for approximately 12 hours to dry. A third coat can be applied if necessary. Finishing with Exterior Oils Clear will add further protection against wear and abrasion. For decking, we recommend applying Treatex Anti-slip Decking Oil.
Tips
- 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 a smaller airtight container.
Sizes and product numbers
Sizes: 1L (e), 2.5L (h)
Item No. 3160 (Clear), 3161 (Albino), 3164 (Sheer), 3167(Champagne), 31610 (Dun), 31613 (Buckskin), 31619 (Spanish Chestnut), 31620 (Copper Bay), 31621 (Seal Brown), 31622 (Bay), 31625 (Blue Roan), 31628 (Steel Grey), 31631 (Smokey Black), 31632 (Belgian Black)
Suitable for: internal and external use
Recommended timbers: Suitable for use on most species of timber
Applications: doors, windows, fences, sheds, cladding, tables, kitchen cabinets and flooring (2 coats of hardwax oil recommended if using with a floor).
1L will cover approximately 15m² in one coat depending on the timber and method of application*
2.5L will cover approximately 37m² in one coat depending on the timber and method of application*
*Rough sawn timber can potentially increase consumption by a factor of 2 to 3.
Preparation
Treatex Exterior Oils work best on unfinished timbers. Previous finishes which stop Exterior Oils penetrating into the timbers (e.g. paints and other ‘closed’ finishes) must be fully removed prior to application. Previous porous finishes can be lightly sanded before over coating with 120 grit sandpaper, however, we cannot guarantee best performance when applying over an existing finish. When over coating a previously finished surface, a trial application is essential. Flaking or peeling finishes must be fully removed prior to application.
Ensure the timber is dry and free from possible contaminates e.g. algae, grease, dirt, dust etc. Leave exotic/dense/oily timbers e.g. Iroko/Bangkirai and pressure treated timbers to weather for at least 3 months or wash with warm, soapy water then rinse throughly and dry to remove resins. Timbers susceptible to mould and fungi should be treated first with a suitable preservative.
We advise that when using Exterior Oils, sufficient product is purchased to complete the whole project and when more than one tin is required it is advisable to mix them together before use. The timber must have a moisture content below 18% and the ambient temperature must be between 8oc and 25oc during application and drying. We strongly recommend a trial application prior to starting the project. Ensure that no rain is forecast before, during or after application or that timber is treated in a dry environment. We strongly recommend a trial application prior to starting the project.
Application
Stir tins thoroughly, before and during use. Use a brush, roller or spray to evenly apply Treatex Exterior Oils in the same direction as the wood grain. Pay particular attention to the end grain, where you should apply liberally. After approximately 12 hours the first coat can be overcoated. Apply with a brush or roller a second coat of Exterior Oils. After the second coat leave for approximately 12 hours to dry. A third coat can be applied if necessary. Finishing with Exterior Oils Clear will add further protection against wear and abrasion. For decking, we recommend applying Treatex Anti-slip Decking 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 a smaller airtight container.
Sizes: 1L (e), 2.5L (h)
Item No. 3160 (Clear), 3161 (Albino), 3164 (Sheer), 3167(Champagne), 31610 (Dun), 31613 (Buckskin), 31619 (Spanish Chestnut), 31620 (Copper Bay), 31621 (Seal Brown), 31622 (Bay), 31625 (Blue Roan), 31628 (Steel Grey), 31631 (Smokey Black), 31632 (Belgian Black)
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