Timber and composite decking and fencing turns green with algae surprisingly quickly — particularly in shaded or north-facing areas where moisture lingers. Algae-covered decking becomes dangerously slippery, and the biological growth accelerates the deterioration of the timber if left untreated. Professional cleaning removes all algae, green growth and surface contamination, restoring the appearance of the surface and significantly reducing the slip hazard. Zenith Surface Cleaning provides professional decking and fencing cleaning across Knottingley, Pontefract, Castleford and the wider West Yorkshire area.
We clean timber and composite decking and all types of garden fencing using appropriate techniques for each material — avoiding the high pressures that can raise the grain on softwood decking while still removing biological growth thoroughly. The result is clean, safe surfaces that look significantly better and last longer.
Timber and composite decking and fencing turns green with algae surprisingly quickly — particularly in shaded or north-facing areas where moisture lingers. Algae-covered decking becomes dangerously slippery, and the biological growth accelerates the deterioration of the timber if left untreated. Professional cleaning removes all algae, green growth and surface contamination, restoring the appearance of the surface and significantly reducing the slip hazard. Zenith Surface Cleaning provides professional decking and fencing cleaning across Knottingley, Pontefract, Castleford and the wider West Yorkshire area.
We clean timber and composite decking and all types of garden fencing using appropriate techniques for each material — avoiding the high pressures that can raise the grain on softwood decking while still removing biological growth thoroughly. The result is clean, safe surfaces that look significantly better and last longer.

Timber decking cleaning — softwood and hardwood

Composite decking cleaning

Garden fencing cleaning — timber and composite

Algae and green growth removal

Slip hazard reduction

Post-clean treatment and sealing available

Decking and patio combined cleans
Your decking has turned green and is becoming slippery
Fencing looks dirty and stained
You want to extend the life of existing timber before treating or replacing
You haven't had decking or fencing cleaned since it was installed
Decking and fencing cleaning needs the right pressure for the material — too high on softwood raises the grain and causes damage, too low doesn't remove the biological growth. Zenith assesses each surface and cleans at the correct pressure with appropriate detergent, delivering clean, undamaged results.
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Call for a free, no-obligation quote on any exterior cleaning or surface restoration project across West Yorkshire.