Tenco Douglas stain clear transparent (1.0 litre) is a transparent Douglas stain on an acrylic binder with water as the solvent, intended for Douglas fir and larch outdoors. The stain is low-odour, fast-drying and lower in solvent than alkyd alternatives. Do not apply in full sun or below 10 °C. Use on garden buildings, fences, screens, log cabins, palisades and climbing frames. Not suitable for hardwood and not for walk-on horizontal surfaces such as decking and terraces. Theoretical coverage 12–14 m²/l on planed timber, 6–8 m²/l on rough timber. Dust-dry after about 2 hours at 18 °C, recoatable after about 16 hours. VOC at most 20 g/l (EU cat. A/e: 130 g/l). Ready to use; clean tools with water. Order online or collect at Jan Sok in Meppel.

Key features

Key properties of Tenco Douglas stain clear transparent:

• Transparent Douglas stain: Water-borne acrylic, for Douglas fir and larch.
• Low VOC: Max. 20 g/l, low odour; rinse brushes with water.
• Weather protection: UV-resistant, water-repellent and moisture-regulating per Tenco.
• Fast-drying: Dust-dry after about 2 hours at 18 °C; recoatable after about 16 hours.
• Coverage: 12–14 m²/l on planed timber, 6–8 m²/l on rough timber.
• Ready to use: Do not thin. At least 2 coats on new timber, sand lightly between coats.

Applications

Use on Douglas fir and larch:

• Garden buildings and log cabins
• Fences, screens and palisades
• Climbing frames and standing garden timber
• New timber after weathering of extractives or mill oil
• Maintenance of previously stained Douglas or larch

Suitable substrates

Suitable and unsuitable substrates according to Tenco:

• Suitable: Douglas fir and larch, clean, dry and grease-free
• Suitable: this class of softwood; lightly sand greyed timber
• Not suitable: hardwood
• Not suitable: walk-on horizontal parts such as decking and terraces

Instructions for use

Application according to the Tenco product data sheet (July 2024):

1. Substrate: New timber dry, clean and grease-free. Preferably weather it outdoors for several months so extractives or mill oil disappear.
2. Maintenance: Sand old stain or paint back to bare wood. Lightly sand greyed timber until the wood colour returns.
3. Stirring: Stir thoroughly before and during use. Do not thin.
4. Application: Apply a thin, even coat with a brush made for water-borne paints.
5. Coats: Treat new timber at least twice; sand lightly between coats. Maintenance: 1 coat depending on the substrate.
6. Conditions: 10–25 °C at max. 80% RH, not in full sun. Clean tools with water.

Product specifications

Technical data for Tenco Douglas stain clear transparent:

Property	Value
Brand	Tenco
Type	transparent Douglas stain
Colour	clear
Binder	Acrylic, water as solvent
Timber	Douglas fir and larch
Density at 20 °C	1.1 kg/l
Coverage	12–14 m²/l on planed timber, 6–8 m²/l on rough timber
Drying at 18 °C	Dust-dry after approx. 2 hours; recoatable after approx. 16 hours
VOC	Max. 20 g/l (EU cat. A/e: 130 g/l)
Solids	≥ 50 %
Application	10–25 °C, max. 80% RH, not in full sun
Shelf life	At least 2 years unopened, 5–25 °C
Pack size	1000 ml (1.0 litre)
Volume	1000 ml (1.0 litre)