STEP 1: PREPARE
In order for CUTEK® Extreme, to function properly, it is essential that it diffuses deeply into the wood. Anything that might prevent this penetration/diffusion, such as an existing coating (not CUTEK® Extreme), retained moisture, or insufficient time between coats, must be avoided or corrected before applying CUTEK® Extreme.
CUTEK® Extreme must be applied to wood that is clean, non-greasy and dry (moisture content must be less than 17%). You must appropriately prepare your wood BEFORE applying CUTEK® Extreme.
If you have… NEW WOOD:
Your wood must be bare, clean and dry before applying CUTEK® Extreme. If your wood presents with surface contaminants such as stains caused by water, iron or tannins, or chemical residues, or if there is mill glaze, we recommend using CUTEK® Wood Reviver prior to application of CUTEK® Extreme.
If you have… OLD, GREYED OR WEATHERED UNCOATED WOOD:
Old, dirty, stained or grey weathered wood should be prepared and restored by first applying CUTEK® Wood Reviver which will remove the grey and reinstate the original natural colour, grain and beauty of your wood prior to application of CUTEK® Extreme.
If you have… WOOD PREVIOUSLY COATED WITH A NON-CUTEK® COATING:
CUTEK® Extreme must be applied to bare, clean and dry wood. This allows CUTEK® Extreme to freely penetrate/diffuse into your wood. Wood previously coated with a film forming product such as stains, linseed oil, paint, polyurethane, water-based oils, etc. can inhibit this penetration/diffusion and must be removed first with CUTEK® Wood Stripper and CUTEK® Wood Reviver prior to the application of CUTEK® Extreme. In some circumstances complete removal of previous coatings by machine sanding/abrasion can also be a suitable preparation method.
If you have… WOOD PREVIOUSLY COATED IN CUTEK® EXTREME:
Prepare for a maintenance recoat of CUTEK® Extreme by using CUTEK® Quickclean to remove grease, grime and other dirt from your wood. If maintenance has been neglected for a long period of time and the wood has either greyed, become heavily stained by tannins or iron, or if there is an excessive build-up of CUTEK® Colourtone, use CUTEK® Wood Reviver to refresh your wood prior to recoating.
STEP 2: PROTECT
BEFORE YOU PROTECT: Note the hazards and precautions on this website and the can labelling, and ensure that you use the correct safety equipment as detailed in the Safety Data Sheet.
WEATHER: Once applied, CUTEK® Extreme generally requires 3-5 days of dry conditions after coating to facilitate full penetration/diffusion (drying) and an even colour finish; so check your weather forecast before coating.
CUTEK® COLOURTONE: Clear, un-tinted CUTEK® Extreme will allow your wood to naturally lighten/silver/grey when exposed to sunlight while retaining its protection characteristics. Unless you want a clear finish that will naturally lighten/silver/grey off, it is important to mix in a CUTEK® Colourtone to your can of oil before use. Adding a CUTEK® Colourtone provides UV colour protection and slows the lightening/silvering process.
To choose which Colourtone suits your wood and project, visit our Colourtone page.
APPLICATION: After preparing your wood, it will need to be completely dry prior to coating with CUTEK® Extreme. It is very important that your wood is clean, non-greasy and dry with a moisture content of less than 17%. It is also very important that the surface of the wood is free from chemical residues and is not exposed to environmental contaminants such as dusts while the CUTEK® oil is drying.
Stir the CUTEK® Extreme oil thoroughly (with the added CUTEK® Colourtone if desired) before and during use. Make sure you stir from the bottom of the can to ensure active ingredients are properly mixed throughout the oil.
Apply thin, even coats with a brush, or paint pad applicator. CUTEK® Extreme works best when applied as a THIN COAT – two or three thin coats on finished woods are much better than one or two thick coats. For best results, ONE coat of CUTEK® Extreme should be applied to all faces of the wood prior to installing, with a SECOND coat applied to the top surface once the first coat has completely penetrated/diffused (dried).
If applying post-construction, apply two thin coats to all accessible wood surfaces, ensuring the first coat has completely penetrated/diffused (dried) before applying the second coat.
DRYING TIME: Unlike traditional wood coatings, CUTEK® Extreme needs to penetrate/diffuse deeply into your wood. After coating, CUTEK® Extreme will slowly migrate into your wood to repel and displace moisture, improve dimensional stability and lengthen the service life of your wood. This penetration/diffusion (drying) process varies in time for many reasons including differences in wood type (species, density, porosity, age of wood and residual moisture content) as well as environmental factors (temperature, humidity, weather).
Sometimes this drying process can take several days to complete. You will know when your wood is ready for a second coat of CUTEK® Extreme when it is completely dry and non-greasy. Please note the second coat of CUTEK® Extreme will take longer to migrate into your wood than the first coat.
CLEAN-UP: Equipment (including brushes) may be cleaned with CUTEK® Quickclean, mineral spirits or soap and water. If not correctly cleaned or disposed of, oily rags and other oily materials may cause combustion fires. After use you MUST immediately spread out all oily material outside to dry, by flattening them out to their full size in an airy spot at a temperature above 4ºC (39ºF), or wash them thoroughly with water and detergent and rinse. Remove all oil from all clothes, tools, rags and any other materials contacted during use or as a result of an accidental spill. Ensure wash water is disposed in accordance with local regulations.
| New hardwoods (sanded)
|10–20 m2/L 400-800 ft²/gal
|Old restored wood (sanded)
|6–8.5 m2/L 250-350 ft²/gal
|New wood (rough sawn)
|6-7.5 m2/L 250-300 sq.ft/gal
|Old restored wood (rough sawn)
|3.5–6 m2/L 150-250 sq.ft/gal
|Shingles and shakes
|2–5 m2/L 84-212 sq.ft/gal
These figures represent typical averages for common decking and cladding wood species and are to be used as a guideline only.