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TimberTech composite decking is very low maintenance. Our deck boards never have to be stained or deep cleaned - unlike hardwood decking products, they will last for decades with virtually no upkeep whatsoever.

However, we do recommend cleaning your deck occasionally to maintain its appearance. You can use a power washer to do this.

Power washing composite decking

Power washing a deck - photo by Olger Fallas Painting (via Flickr)

The following advice is taken from the TimberTech Installation and Maintenance Guide.


Can composite decking be power-washed?

Yes, it is safe to clean TimberTech composite decking with a power washer.

Here are some tips to bear in mind when you're power-washing your deck:

  • Before washing your deck, sweep away leaves and other debris with a broom.
  • Use a fan tip nozzle and a suitable cleaning product.
  • Do not exceed a maximum pressure of 1500 psi.
  • Look at the grain of the board and spray in that direction.
  • Follow the recommended safety precautions for your pressure washer.

For more information, see our How to Clean Composite Decking infographic.


Easy-to-clean composite decking

All TimberTech decking boards are capped with a moisture-resistant polymer sleeve. This means that anything you spill on your deck can be wiped away with ease!

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READ MORE: What is Capped Composite Decking?

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