Retaining wall cleaning on the Sunshine Coast
Block retaining walls lose their colour under mould and grime — usually on the shady side of the yard. We bring them back without chewing out the joints.

Clean blocks, joints left intact
Retaining walls tend to sit in the damp, shaded parts of a yard — exactly where mould and algae grow. Over time a light-coloured block wall turns streaky green and black.
Walls are done by hand with the lance. The trick is matching the pressure and distance to the block, so the grime comes off and the mortar joints stay where they are.
We’ll look at the wall when we quote and tell you straight what result to expect.
- Block walls
- Mould & algae
- Joints left intact
A retaining wall, before and after.
Mould-streaked block on the left, back to its original colour on the right.


Four steps. No mucking about.
Call or text
Ring or text 0450 357 617, or send the quote form. Tell us roughly how long and high the wall is.
Free quote
We look at the wall and give you a straight price. No obligation either way.
Clean by hand
The wall is cleaned with the lance, with pressure matched to the block so the joints stay intact.
Rinse and tidy
The area gets rinsed off and left tidy when we’re done.
Retaining Wall Cleaning FAQs
How much does retaining wall cleaning cost on the Sunshine Coast?
It depends on the size of the wall, the surface and how much grime has built up, so every job is quoted individually rather than off a price list.
Quotes are free and there's no obligation. Call or text 0450 357 617, or send the quote form with a rough size and what the surface is made of.
Will pressure washing damage my retaining wall joints?
Not when it’s done with care. We match the pressure and distance to the block so the grime comes off without chewing out the mortar joints. If the joints are already crumbling, point it out when you get your quote.
What’s the black and green stuff on my retaining wall?
Usually mould, algae and general grime. Retaining walls often sit in shaded, damp parts of the yard where it grows easily, and it builds up over time until the block loses its colour.
Can you clean the path or slab in front of the wall too?
Yes — paths, pavers and slabs are one of our standard services. Ask for both when you request a quote.
Other surfaces we clean
Wall gone green? Let’s bring the colour back.
Call or text Troy on 0450 357 617 for a straight price, or send through the quote form.



