New customers save up to 10%. Get a free quote

Why is my pool deck slippery and black?

Black, slippery spots on pool decks and patios are usually mold and mildew. Here's why they show up in Miami and how we clean them.

By Michael Babun, owner of Baboon Pressure Washing

A clean paver patio with an outdoor dining set, after pressure washing

If your pool deck or patio has dark spots that feel slick when they're wet, that's usually mold and mildew. It loves the shade, splash water and humidity around South Florida pools.

Why it matters

Besides looking bad, it makes the surface slippery, which is the last thing you want around a pool. One of our customers, Lazara Escarpenter, described her area before we cleaned it as “covered in black, slippery mold.”

How we clean it

  • Pressure set for the surface: concrete, pavers and travertine are each treated differently.
  • Even cleaning across the whole deck, so you don't end up with clean stripes next to dirty ones.
  • Care around plants, screens and pool equipment.

Keeping it clean

Shady, damp corners tend to grow back first. Many homeowners have the deck cleaned before summer or before hosting. Want a quote? Text a photo of the deck to (305) 282-8878.

Get a free quote

Free estimate

Get your free quote

Send a few photos and the address. We'll reply with a price.

Request your quote

Please enter your name.
Please enter a phone number we can call or text.
Please enter a valid email address.
Please enter the address of the property.
What needs cleaning? (pick any)
Got photos? Text them to (305) 282-8878 after you send this. Photos help us quote faster.

Prefer to talk? Call or text (305) 282-8878.

Michael Babun smiling in front of his work trailer and truck

Protect your roof & lower your AC bill

Black streaks and green buildup are algae and moss eating away at your roof. They trap moisture, damage shingles and tiles, and make your roof absorb more heat. A professional soft wash makes your roof look brand new, helps lower cooling costs, and saves you from expensive repairs.

Get my free estimate
Call Text Free quote