Do I need to stain or seal my composite deck in Vancouver, or is it truly maintenance-free?

Composite decking is often marketed as maintenance-free, but that is not entirely accurate in Metro Vancouver's wet climate. While composite boards do not need traditional wood stain, they still require regular care. Mould and algae growth is extremely common on composite decks here due to our extended rainy season from October through April. You should clean your composite deck at least twice a year using a dedicated composite deck cleaner and a soft-bristle brush. Avoid pressure washing above 1,500 PSI, as excessive pressure can damage the surface texture and void your warranty. For stubborn mould stains, an oxygen bleach solution works well without harming surrounding plants. Some older-generation composite boards can also fade from UV exposure, particularly on south-facing decks that get strong summer sun. In those cases, a composite-specific UV protectant coating can help restore colour and add a layer of defence. Professional composite deck cleaning in Metro Vancouver typically runs $150 to $350 depending on the size of your deck. If your composite boards are showing significant fading or surface damage after eight to ten years, replacement panels may be more cost-effective than restoration. Check your manufacturer warranty first, as many cover fading and staining for twenty-five years. A local painting contractor experienced with composite materials can assess whether cleaning, coating, or partial replacement makes the most sense for your situation.

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