NW Exteriors - Decking Cleaning Services

Deck cleaning North Wales homeowners rely on is especially important given the region’s damp, coastal climate. Timber and composite decking are constantly exposed to rain, sea air, and shade, which speeds up the growth of algae, moss, and green mould. Left untreated, this build-up doesn’t just look unsightly – it makes decking boards slippery and genuinely dangerous, particularly on steps, raised platforms, or areas near doorways where falls are more likely. 

Regular cleaning does more than improve safety. It also protects the lifespan of your decking. Trapped moisture and organic growth can cause timber to rot and composite boards to discolour over time, leading to costly repairs or premature replacement.  A professional deck clean using the right pressure and technique removes this build-up without damaging the surface, keeping your decking safe, attractive, and structurally sound for years to come. 

Whether you have a garden deck, raised balcony, or decking around a holiday let, our team tailors the cleaning method to the materials and condition of your boards. We serve homeowners and businesses across Anglesey, Bangor, Conwy, and the wider North Wales region, with safe, effective jet and soft-washing techniques suited to both timber and composite surfaces.