CDECK composite decking has a reputation for being low-maintenance, and it’s true. But low maintenance doesn’t mean no maintenance. In this guide we explain everything: how to do your everyday cleaning, how to use a pressure washer, how to deal with stains and limescale, which products to avoid and how often to clean.
To clean CDECK decking, the equipment is deliberately simple:
Yes, it’s actually recommended. Just follow these rules:
To keep your decking looking its best over time, four steps are all it takes:
In the vast majority of cases, that’s all you need.
It’s best to act quickly, because the sooner you deal with a stain, the easier it is to remove. Depending on the type of dirt:
| Situation | What to do |
|---|---|
| General dirt, dust, leaves, algae or moss | Water + neutral detergent |
| Food residue, grease, wine, drinks | Water + non-abrasive degreaser |
| Limescale (whitish marks) | Water + non-abrasive descaler |
In every case, scrub with a soft brush or use a pressure washer in the direction of the boards. Always test the product on an inconspicuous area before applying it to the rest of the decking.
A barbecue or an outdoor meal can leave its mark. If a grease stain won’t come off with normal cleaning, the procedure depends on the range:
In hard water areas, meaning water with more calcium and magnesium salts, whitish limescale marks may appear on the surface. They come off easily, without damaging the boards.
Composite decking isn’t wood, so it shouldn’t be treated like wood. Avoid:
There’s no set frequency: clean your decking whenever dust, leaves or debris build up.
For a deeper clean, or to reach the structure under the boards, the Quick-Fix® system lets you remove and refit each board individually.
As well as cleaning, two simple habits help your decking keep its good looks for longer:
No. Just sweep it regularly and wash it from time to time with water and a neutral detergent. It doesn’t need varnish, oil or wood stain.
For normal cleaning, water and a neutral detergent. For grease, a non-abrasive degreaser; for limescale, a non-abrasive descaler. Avoid abrasive, chlorine-based or acidic products, and always test first on an inconspicuous area.
Yes. Use the fan nozzle, at around 30 cm, with a maximum of 150 bar, always in the direction of the boards.
No. Composite isn’t wood, so it doesn’t need feeding or treating. Varnish, oil and wood stain should be avoided.
There’s no need, and it isn’t advisable, because bleach contains chlorine. Wash with water, a neutral detergent and a soft brush (or with a pressure washer), always in the direction of the boards, and rinse with clean water.
Yes. The Quick-Fix® system lets you lift and refit each board individually, without taking up the decking.