Decking
Fencing
Gates
Deck Maintenance Checklist: Timber and Composite
Decking maintenance keeps surfaces safe, slip-resistant and attractive.
In the UK climate, simple seasonal care goes a long way.
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Routine Cleaning (All Deck Types)
At least twice a year:
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Sweep leaves and debris
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Remove organic matter
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Wash with mild detergent
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Use soft brush
Avoid aggressive pressure washing on timber unless experienced.
Algae builds up faster in shaded gardens — especially in coastal areas like Plymouth.
Treating Timber Decking
Timber should be:
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Cleaned thoroughly
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Fully dried
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Re-oiled, stained or sealed
Pay attention to:
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Board ends
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Steps
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High traffic areas
Treatment frequency depends on exposure but usually every 1–3 years.
Maintaining Composite Decking
Composite usually requires:
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Sweeping
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Occasional soapy wash
Avoid:
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Solvent cleaners
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Bleach
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Rubber mats that trap moisture
Even composite can develop surface algae in damp conditions.
Seasonal Decking Maintenance Checklist
Spring
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Clean surface
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Inspect boards
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Tighten fixings
Autumn
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Remove leaf build-up
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Check drainage
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Inspect subframe where visible
FAQ
Does composite decking get slippery?
It can if algae forms. Regular cleaning prevents this.
How often should timber decking be sealed?
Every 1–3 years depending on wear and exposure.