Cleaning a Trex Deck


Cleaning a Trex deck can seem daunting at first. Since this product is still relatively new to the variety of outdoor deck options, care and upkeep is still an unfamiliar process to most. However, rest assured that keeping your Trex deck looking like new is not really difficult at all, no matter what comes your way.

What Is a Trex Deck?

Trex is a best-selling brand of decking and fencing that is manufactured out of a combination of wood and plastic particles. The decks are made from recycled materials like sawdust and plastic bags, so it is environmentally friendly as well as beautiful. The plastic components help to prevent rot from moisture damage, while the wood guards the deck against the harmful rays of the sun.

Cleaning a Trex Deck

There are many different ways to maintain the look for your Trex deck. The method you should choose depend upon what sort of damage it has incurred.

Dirt and General Soiling

Every deck experiences general dirt and grime that comes simply by being an outdoor feature. A Trex deck can be cleaned by simply spraying it with a powerful hose. This will remove dirt on the surface of the deck. You can then use soapy, warm water and a stiff brush to clean grime and debris out of the embossing.


If you live in a part of the country that experiences cold winters, ice and snow will be a concern with your deck. Fortunately, all you need is a plastic shovel and calcium chloride to get your deck back to new. Use the shovel to lift off any snow, and then use calcium chloride (or rock salt) to melt remaining snow slush and ice off of its surface. Cleaning a Trex deck remains simple, even in freezing temperatures.


During the springtime when pollen is an issue, mildew and mold can collect on Trex's biofilm. This is why it's important to regularly clean your deck when the weather begins to warm and flowers are blooming. Again, use a hose and warm water with soap and a stiff brush.

Food and Grease

If food is spilled onto the Trex deck, it is important to remove it as soon as possible. If you have a stain warranty with your deck, it will become invalid if the food or grease is not removed within seven days. Again, use a stiff brush and soapy water to get spills out of the embossing and then spray with a hose to remove remaining debris.

Shoe Scuffs

If your deck becomes scuffed or suffers an abrasion from shoes, chairs, or other harsh encounters, give your deck 12 to 16 weeks for natural weathering to absorb the damage. You can also use deck brightener to hasten this process. This also works with water spots and leaf staining.

Cleaning Don'ts

Your Trex deck should never be sanded. This will alter the appearance of the deck's surface, and will invalidate your warranty. Pressure washers are also not recommended. This can also void your warranty and cause irreversible damage to your deck. If you must use a pressure washer, keep it under 1500 PSI and more than 12 inches away from the deck surface.

Finally, if you choose to remove a piece of your deck, you cannot burn or dispose of it in your traditional garbage can. Instead, contact a Trex distributor to find out how to properly renovate and/or dispose of your Trex deck when you're ready for a change.

Cleaning a Trex Deck