08/01/2026
🚨 Scenic City Outdoor Property Watch
Please don’t pressure wash your composite deck.
This week, we looked at a home with a beautiful composite (Trex-style) deck.
The homeowner had tried to pressure wash it himself…
Unfortunately, the high pressure had started to shred and fuzz the surface of the decking.
Once that protective surface is damaged, it can’t simply be “washed back smooth.”
It’s an easy mistake to make because most homeowners don’t realize composite decking needs to be cleaned differently than many other outdoor surfaces.
Here’s what we recommend:
🪵 Wood decks
Should be cleaned using the least aggressive method possible. In most cases, that means soft washing to safely remove algae, mildew, dirt, and organic buildup before any staining or sealing is considered. The goal is to clean the wood—not damage it.
🏡 Composite decks
Should also be cleaned with low pressure and manufacturer-approved cleaning methods. Soft washing and gentle cleaning solutions remove algae, mildew, and grime without damaging the composite surface.
One of the reasons we started Scenic City Outdoor Property Watch is because we’re on properties across Chattanooga every day, and we get to see the little mistakes that can turn into expensive repairs.
If we can help one homeowner avoid damaging a deck, roof, or siding by sharing what we see, then it’s worth taking a few minutes to post about it.
Have you ever learned the hard way that something around your home couldn’t be cleaned the way you expected?
👇 We’d love to hear your story in the comments.
— Scenic City Outdoor
Helping homeowners understand, protect, and enjoy their outdoor spaces.