Reviving Grey, Slippery Decking in Spring
Getting your outdoor space ready
By the end of winter, most decks are in need of some attention. Rain, frost and damp conditions leave decking discoloured, mossy and slick underfoot. The good news is that a proper restoration can bring it back to life ready for warmer weather.
Why decks go grey and green
Untreated or poorly protected timber turns grey as UV light breaks down the surface fibres. Damp, shady conditions encourage algae, moss and mould, which make the surface slippery and can trap moisture against the timber. Left untreated, boards may split, warp or loosen.
Step by step
Deep cleaning
The first step is a thorough clean to remove dirt, algae, moss and old, failed coatings. Using dedicated cleaners, we lift the dirt and growth out of the grain. The deck then needs time to dry thoroughly before sanding.
Fixing loose and damaged boards
Loose boards are re-fixed, protruding screws are replaced and badly damaged boards are swapped for new ones. This makes the deck safer and gives a better finish.
Sanding
Sanding removes the grey, weathered surface and any remaining coatings, revealing fresh timber underneath. It also smooths raised grain and splinters, making the deck more comfortable underfoot, particularly for bare feet and children.
Applying decking oil
Finally, the deck is treated with a quality UV-resistant decking oil. Decking oil penetrates the wood, repels moisture and slows down UV greying, without peeling like some paints and stains. You can choose a clear oil for a natural look or a tinted oil to warm up or even out the colour.
Restore or replace?
Even very weathered decking is usually worth saving. As long as the boards are not rotten and the frame underneath is sound, cleaning, sanding and oiling will usually bring them back. A simple test is to press a screwdriver into the boards and joists: if it sinks in easily, the timber may be rotten and need replacing. A few damaged boards can be replaced as part of the restoration without the cost of a new deck.
Restoring rather than replacing is also better for the environment, as it keeps good timber in use for longer.
Timing your restoration
The ideal window for decking work is late spring into summer. The timber needs to be dry for sanding and oiling, and the oil needs a few dry days to soak in and cure properly. Booking early is a good idea, as many people want their decks ready for the first warm weekends. Autumn restorations are also possible, giving your deck extra protection before winter arrives.
Safety first
A green, slippery deck can be genuinely dangerous, especially for young children and older relatives. Regular cleaning and a good protective oil make the surface much safer underfoot.
In summary
Even a grey, mossy and slippery deck can usually be brought back after a hard winter.
Restoration involves deep cleaning, repairs, sanding and a protective UV-resistant decking oil.
Check for rot with a screwdriver; soft timber may need replacing before restoration.
Plan the work for a dry spell in late spring or early summer for the best results.
An annual maintenance coat of oil keeps the deck protected and looking good for longer.
Between restorations
Keep the deck clear of leaves and debris.
Clean off algae early, before it builds up.
Make sure water can drain freely from the boards.
Apply a maintenance coat of oil annually.
Shift planters and furniture so the timber can dry.
With an annual maintenance coat, your decking will stay protected and looking good for many seasons. The longer it is left, the more work will be needed to restore it.
Want your deck ready for summer? Our decking restoration service is available throughout Bromley for decks of every size. You can check typical costs on our prices page.