*Rustoleum Mathys Fassitek Aqua Opaque White

This product is now discontinued.
Out of stock
Product Description

Please note, this product is now discontinued. Contact our technical team for a suitable alternative.

Rustoleum Mathys Fassitek Aqua Opaque is a water borne, pure acrylic based, decorative opaque exterior use wood stain. Also suitable for the decoration of brick and concrete.

Best Uses

Rustoleum Mathys Fassitek Aqua Opaque is a tintable semi-gloss water borne opaque wood stain for the protection and decoration of external wood. Fassitek Aqua Opaque is also suitable for the decoration of brick and concrete. Also suitable for use on cladding, fascias, panelling, sheds, gates, fences, garden furniture, windows and doors.

  • Decorates and protects most types of timber in two coats
  • Recoatable within 2 hours
  • Protects against damaging effects of sunlight
  • Microporous, allows wood to breathe
  • Flexible, allows for wood movement
  • Resistant to micro organisms
  • Supplied ready for use


It is recommended that all non-durable timber for outer use should be treated with a preservative. Wood should be unweathered, bare, dry, free of mould, dirt, bark, paint, varnish or polish. Rough-sawn wood should be treated. Moisture content should be less than 21% at the time of treatment. Avoid application of Rustoleum Fassitek Aqua Opaque on (horizontal) surfaces containing moisture. Remove fungi with a suitable cleaning agent. Wood should be degreased, then carefully sanded and dedusted.

Apply by brush or roller, being careful to avoid over brushing/rolling and to achieve the recommended coverage. External window joinery: It is important to ensure that only top-quality joinery is used and that the timber has been adequately preserved. In the context of maintenance work: if you use putty based on linseed oil, you should first apply a primer with the same base. Let it dry for at least 24 hours. If you use putty based on acrylic, you can apply the Fassitek Aqua Opaque immediately. Apply using brush or microfibre rollers.


Fassitek Aqua Opaque is not suitable for surfaces subject to heavy continuous wear, eg. from foot traffic. It is suitable for greenhouses and animal quarters. Withhold plants and animals out of this area during drying time. Apply a third coat on horizontal surfaces such as windowsills. Fassitek Aqua Opaque is compatible with protection treatments without water repelling additives. If you should use the wood stain on coniferous wood, we recommend to insulate the knots prior to application, especially when using bright colours. A discolouration as a result of resin bleeding may be possible.

Technical Details


  • Substrate should be at least 3°C above the dew point

Technical Info

Components: Single Pack
Type: Wood Stain
Finish: Light Satin Gloss
Stock Colours: White
Tintable: Yes. Please note, bespoke tints are non refundable / exchangeable
VOC Content: 130 g/l
Volume Solids: 42 - 47%
Suitable Substrates: Wood, Brick and Concrete
Application Method: Brush or Roller
Theoretical Coverage: Sawn : 4-8 m²/litre, Planed: 8-12 m²/litre
Wet Film Thickness (WFT): 80-100 μm
Dry Film Thickness (DFT): 35-45 μm
Induction Time: -
Pot Life: -
Touch Dry: 2 hours at 20°C
Overcoatable: After 2 hours at 20°C
Fully Cured: 4 hours at 20°C
Cleaner / Thinner: Water
Shelf Life: 2 years from date of production unopened
Packaging: Available in 2.5 Litres