Winter Brings Frost, Constant Rain And Short Drying Windows — The Perfect Recipe For Slippery Decking. Use This Guide To Keep Walkways, Steps And Public Areas Safe, And Learn When To Upgrade To A Purpose-Made Anti-Slip Solution.

Why decking becomes slippery in winter

  • Rain & frost: Freeze–thaw cycles leave a thin water film and black ice.
  • Algae & moss: Shade + moisture + organic debris encourage growth.
  • Low sun & airflow: Boards stay wetter for longer in winter.

Step 1 — Deep clean before the cold sets in

  1. Sweep with a stiff brush to remove leaves and mud.
  2. Apply a timber-safe decking/algae cleaner (avoid bleach). Allow dwell time, then rinse.
  3. Pressure wash lightly if needed — don’t damage fibres or anti-slip inserts.
  4. Let the deck dry fully so problem areas are visible.

Pro tip: A clean surface dramatically improves grip and slows algae returning.

Decking been cleaned

Step 2 — Add grip where you need it most

GripDeck® Anti-Slip Decking

Factory-applied resin & aggregate inserts deliver outstanding traction in wet and icy conditions. Available on softwood or hardwood, grooved or smooth profiles, and cut to your sizes.

Explore Anti-Slip Decking

RetroGrip® retrofit inserts

Already have decking? Retrofit aluminium inserts screw into existing grooves for an instant, cost-effective upgrade — ideal for DIY, schools, parks and high-traffic walkways.

See RetroGrip®
Softwood grooved decking
Deck Safety

Step 3 — Keep algae under control all winter

  • After cleaning, apply an algae inhibitor to slow regrowth.
  • Improve drainage so water can’t pool on boards.
  • Trim back overhanging foliage to boost light and airflow.
  • Sweep debris weekly to prevent slimy build-up.

Bonus: The textured aggregate of GripDeck® inserts keep the decking safe in most conditions.

Step 4 — Manage frost and ice safely

  • Avoid salt/grit on timber — it can damage fibres and fixings.
  • Use a non-corrosive de-icer and a soft broom for clearance.
  • For ramps and steps, add AKO Safety Matting to maintain instant drainage and grip.
  • Keep drainage channels and gaps clear so surface water escapes.
AKO stair tread
AKO Safety Matting
matting

Step 5 — Quick winter condition checks

  • Look for raised fixings, lifted boards or soft spots.
  • Confirm anti-slip inserts sit flush and secure.
  • Replace damaged boards now to prevent bigger spring repairs.

Plan ahead: the long-term fix

If winter maintenance keeps catching you out, upgrade to factory-fitted GripDeck® Anti-Slip Decking. Boards are independently tested to high slip-resistance standards and are trusted by councils, schools and attractions across the UK. For quick upgrades on existing decks, choose RetroGrip® inserts.

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