Green, slippery timber decking
Timber holds moisture in a way that stone does not, so decking greens faster and stays slippery longer. Grooved boards, designed to shed water, are usually the worst because the grooves hold debris.
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Monday to Saturday, 8am – 7pm
- Clear the grooves, that is where the growth lives
- Keep the pressure low on softwood
- Let boards dry fully before oiling
Grooves work against you
The channels intended to improve grip collect leaf litter and silt, which holds moisture against the timber. Once growth establishes in the grooves it survives brushing entirely, and that is exactly the surface people walk on.
Pressure and soft timber
Softwood decking damages easily. Too much pressure raises the grain, leaves lap marks and shortens the life of the boards. The right approach is a treatment with dwell time and a controlled rinse rather than blasting it clean.
Drying and finishing
Timber needs to be genuinely dry before any oil or stain goes on, and that takes longer than people assume in a South West spring. Applying too soon traps moisture under the finish.
Common questions
- Will the boards come up like new?
- Colour improves a lot, but greyed timber has weathered and will stay lighter than new boards.
- Can you clean composite decking?
- Yes, and it takes even less pressure than timber.
- Do you oil or stain afterwards?
- We clean and leave it dry and ready. Finishing is usually a separate job once the timber has dried out.
Services involved
Similar situations
Tell us the deck size and the board type and we will quote a wash set for that timber.
Get a written quote