Composite decking is a low maintenance material for building your deck, but it still requires some maintenance. As a matter of fact, a little maintenance goes a long way to help your composite boards last longer and prevent any damage that may happen. Most composite decking boards come with a warranty, so proper maintenance and cleaning procedures are necessary for those just-in-case scenarios where you might have to use the warranty.

It is always a good idea to double-check the cleaning instructions for your brand of composite decking boards before cleaning so you don’t do anything that will void the warranty. If you have a composite deck installed in your home or commercial property, a simple soapy water solution with a pressure cleaner should do the trick. However, some composite decking comes with cleaning guidelines and require more effort to maintain than others.

A few factors will dictate how often you need to clean and what type of cleaning is required: the season and location, along with how much traffic the deck gets and if debris tends to accumulate on it.

Preventative cleaning is definitely a better option than reactive cleaning to undo the damage if you want your deck in top shape.

Keep a simple cleaning routine

Most composite board manufacturers suggest a weekly or monthly cleaning to keep the deck as clean as possible. This can be as simple as a quick once-over with a broom to clean off dirt, leaves, and other accumulated materials.

For larger decks or in autumn, when there may be a large amount of leaves that need to be removed and cleared, you may find using a leaf blower easier. For decks with a lot of dirt accumulation, use a high pressure water cleaner to hose the dirt off.

Remove stubborn dirt from your composite decking

For hard to remove dirt, you’ll want to use soapy water and a brush. Start by hosing off the deck and then use a soft bristle brush with a mild detergent mixed with water to scrub the deck. Make sure that you get into the cracks and corners of the deck, this will ensure that you will remove any mildew or mould that could possibly build up on the deck.

A wash with soapy water is recommended at least twice a year, and more often if exposed to a very dusty or humid and moist environment. Or you decking material is a 1st generation or un-capped composite.

If your deck is larger or if scrubbing it seems too hard, you can use a pressure washer instead. Make sure it is set to under 3100 psi and the nozzle is at least 21 cm from the boards. To prevent damage always spray with the grain of the composite.

For both scrubbing and pressure washing, make sure to completely rinse the deck with clean, preferably warm, water afterwards. Soap can leave a film on composite decking that could damage it over time. Also, never use a harsh detergent or acetone solution; instead opt for mild soap and use a high-water dilution ratio.

Take fast action with any food spills

On a day-to-day basis, especially during the summer when outdoor entertaining is frequent, make sure you remove and clean any food spills as soon as possible. Certain composite board manufacturers have a material warranty that will be voided if food is left sitting longer than seven days.

Remove the food or drink spill and then wash using a warm soapy water mixture. This method is not limited to food alone, it will also work on any grease or oil stain.

Keep your deck in pristine condition

Some composite board manufacturers will have brand specific ‘brighteners’ that can be used after cleaning to protect the boards and will also remove any tannins that could be left over from debris. Double check to verify the brightener can be used with the decking material you have, clean the deck, then apply the product after the deck is completely dry. For 1 generation or un-capped decking there are stains or sealers similar what is used on timber decking to restore and revitalise your deck.

All in all, cleaning a composite deck is quite simple. With regularly scheduled maintenance, your deck will look great and last a whole lot longer.

Want to learn more about composite decking? Check out our decking blog now!

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Our customers say

We couldn't be more pleased with the result of our new decking built by Dean and his team from Allstyle Build using composite decking sourced from Decking Perth. Dean's customer service and attention to detail was really appreciated and his pricing was value for money given the excellent result. Wouldn't hesitate recommending both Allstyle Build and Decking Perth's products for any decking project.
Paul Hamersley
Paul Hamersley
11:43 24 Mar 22
Ive just had my new composite deck supplied by Decking Perth. The whole process was so easy and professional. James and Eric from JLA Carpentry did a fantastic job doing the installation. The workmanship is top class. Highly recommended.
Steve Blight
Steve Blight
04:46 09 Mar 22
I had no idea where to start when it came to getting decking installed. I was so pleased when I found Decking Perth because they did all the tricky stuff for me - all I had to do was tell them what I was after and what colour and they did the rest. The contractor I ended up choosing to do the instal was fantastic. Couldn't be happier with my new deck! So thank you!
Kealy Hardman
Kealy Hardman
08:12 19 Feb 22
We had our front entrance decking replaced with the composite product - Spanish Saffron colour - and am super happy with the outcome. The service and advice/options provided by Perth Decking was very professional and Eric and his team did a fantastic really great job.Recommend Perth Decking and their teams without any hesitation.
Nico Spangenberg
Nico Spangenberg
10:35 13 Feb 22
Mazlin Junid
Mazlin Junid
03:04 09 Feb 22
Highly recommend Decking Perth. They were super helpful from the initial shop visit to the many questions and queries I had, right through to the installation by the fantastic Jake. Cannot fault.
anna wingell
anna wingell
09:35 17 Jan 22
Fantastic experience from start to finish. Ashleigh at Decking Perth was very helpful and the installers Michael and Liam from Lesgo Construction were reliable, friendly, on time and did a quality job. Nothing was to much trouble and I would definitely use them again..
Rod Wright
Rod Wright
10:40 13 Dec 21
Great service and product
Ryan C
Ryan C
05:12 13 Oct 21
Decking Perth provide great advice for novice deck buyers by showing you a wide range of products underpinned by knowledge and a conduit to deck builders. A couple of days after we visited Decking Perth one of their preferred contractors provided a very competitive quotation and we engaged AllStyle Carpentry. Decking Perth supplied all materials as they are a One Stop Shop for the contractor. The Modwood Xtteme deck looks fantastic and we could not be happier with it. Thank you Decking Perth as your business supported our thinking and your advice saw the planning come together and we now have a lovely deck.Phill Cribb
Phill CRIBB
Phill CRIBB
10:14 21 Apr 21
Could not recommend Deck Perth more. I had a small area at the front of my house which needed Composite decking supplied and installed. Visited their shop for ideas, then they organised a contractor to attend for a quote to install. All done within 2.5 weeks and over the moon with the end result at a reasonable price, thanks again
Owen Taylor
Owen Taylor
04:01 08 May 20
I contacted Decking Perth regarding an extension to our current Trex Deck. They took my details and within 4 hours I had been contacted by 2 decking installers and both had attended and quoted within 3 days. Jamie from Elite Decking had the job completed the following week! Lovely team, quiet, clean and tidy workers, on time and on budget, attention to detail exceptional. You cannot tell the difference between the 5 year old deck and the new extension. Highly recommend Elite Decking and Decking Perth.
Louise Bray
Louise Bray
06:27 28 Jan 20
I had some Trex (tiki torch colour) decking installed just before Christmas 2019. Jamie was great to deal with and did a great job installing the product. He and Phil were also very helpful in choosing the best product. Thanks guys! I have no problems recommending Decking Perth to others.
Peter Coulson
Peter Coulson
23:30 05 Jan 20
Great service, professional products.And easy to deal with
Dean Bumbak
Dean Bumbak
19:02 04 Dec 19
As an ordinary DIY supported by a Team of Rockstars to achieve a tremendous result and nothing was too much trouble Cristian and Cassandra.
Aaron Henley-Martin
Aaron Henley-Martin
07:36 22 Nov 19
We were seeking a good quality decking oil for our garden landscaping and out-door shower project. We found the reviews on-line for Cutek Extreme Clear wood preserver were very good and suited us as it is absorbed by the timber thereby ensuring greater life expectancy and a great grain enhancer. In addition re-coating every 18mths to 2yrs appealed as the timber only requires a high pressure wash and a dry off period before re-coating. No sanding required. We chose a New Bronzetone tinter to deepen and enrich the merbau timber grain for an excellent aesthetic finish. Next Project the pool deck!
Chris Pallett
Chris Pallett
04:13 08 Nov 19
Marty Brausch
Marty Brausch
08:47 29 Jul 19
I contacted Decking Perth to see about getting my small courtyard sorted. Cassandra recommended 2 companies to install Trex decking. Marty and his team did a great job. I'm really pleased with the results.
Belinda G
Belinda G
03:34 13 May 19
I use Decking Perth as timber and composite decking supplier, and have dealt with Adrian for years. The team are passionate and strive for innovation, always presenting the latest products to benefit the end user. I'm grateful for their knowledge and desire to see the best fit for purpose product for both client and contractor alike.
Matt Libardi
Matt Libardi
12:47 15 Apr 19
I contacted Decking Perth to get my alfresco area upgrade to latest trex decking. She recommended two subbies however I choose one subiie who is Easy Deck. It was highly impressive to note the way specially Casandra how she provided total service package including resource, material and also best economical options. This is the best customer service i ever had experienced. follow up on work progress, quality control etc are other events Cassendra followed up with customer. it was very impressive work indeed by Easy Deck and Decking Perth.
Great job at a fair price. Thanks Joe!
Steve Collins
Steve Collins
04:25 20 Aug 18
Aaron East Landscape Designs used Trex decking and did an absolutely awesome job. Very professional. Would highly recommend them for decking and landscaping
Kelly Berry
Kelly Berry
03:27 01 May 18
21m2 of decking needed around pool area. Decking Perth provided an easy service to get the job done quickly and at a very good price. Installation contractors were switched on and provided smart options to get around a couple of problem areas. Cannot fault the installation, it is fantastic and sets off the pool area fantastically.Can highly recommend Decking Perth to anyone.
Tim Waldby
Tim Waldby
13:47 05 Oct 17
Sharon Moieni
Sharon Moieni
06:14 26 Sep 17
Made the quoting process very simple and easy and checked in regularly to make sure that we were happy with the process and the finished job.
Samantha Stenersen
Samantha Stenersen
02:06 15 Sep 17
Adrian and the team were extremely pleasant to deal with and provided friendly and informative service throughout the sales process. A thoroughly positive experience from start to finish and the Trex products we purchased look outstanding.
Jon G
Jon G
07:06 12 Sep 17
The service provided by Adrian at Decking Perth was exceptional in helping us select our decking and providing advice regarding the laying. The Torona Brown Trex decking looks great. Neville
Neville Jones
Neville Jones
04:58 06 Sep 17
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