Brick walls
Moss, grime and staining lifted from exterior brick walls.
Specialist brick cleaning and acid washing that lifts mortar smears, efflorescence, moss and grime from brickwork — restoring the natural colour and texture of your brick without damaging the surface.

Brick cleaning removes the mortar smears, cement staining, efflorescence, moss, mould and airborne grime that build up on brickwork over time. Across Mosman and the Lower North Shore, many homes feature solid brick walls, brick fences, brick pavers and heritage brickwork that gradually dull as organic growth takes hold in shaded, damp spots and mineral salts wick to the surface as white efflorescence. Acid washing is the controlled use of a diluted acid solution — typically on new, restored or heavily stained brick — to dissolve mortar smears and cement residue that water alone won't lift.
The key is matching the method to the brick. Acid wash is effective for removing mortar stains and efflorescence, but it must be used with care: the wrong strength or dwell time can etch the brick face, lighten mortar joints or corrode metal fittings nearby. Older, softer or handmade bricks need a gentler approach than hard modern extruded bricks. We pre-wet the surface, apply the acid at the right dilution, let it work, and neutralise and rinse thoroughly — protecting surrounding plants, windows and metalwork as we go. Tommy assesses the brick type, age and condition before any work begins and talks you through the expected result, so there are no surprises.
Moss, grime and staining lifted from exterior brick walls.
Front fences and boundary walls cleaned and refreshed.
Joint moss and surface grime removed from brick paving.
Slippery green growth cleared from brick treads.
Careful cleaning that respects older, softer brick.
Mortar smears and cement residue acid-washed off new brick.
Correct dilution, dwell time and neutralising — no etched brick or damaged mortar.
We adjust pressure and acid strength for heritage, handmade and modern brick.
We dissolve mineral salt staining and explain the moisture cause behind it.
Plants, windows and metalwork protected before any acid is applied.
Drag to compare heavy moss and grime buildup with our high-pressure restoration.

Brick Cleaning & Acid Wash is available across Mosman, Cremorne, Neutral Bay, North Sydney, Cammeray, Northbridge, Balgowlah, Seaforth and Clontarf. See our local pages for each suburb:
Acid washing uses a diluted acid solution to dissolve mortar smears, cement stains and efflorescence from brickwork. It's safe when done correctly — we pre-wet the surface, use the right dilution for the brick type, control the dwell time, and neutralise and rinse thoroughly. We also protect nearby plants, windows and metal fittings before we start.
Yes — that's efflorescence, mineral salts that wick to the surface as moisture moves through the brick and mortar. Acid washing dissolves it, but it often points to an underlying moisture issue. We'll treat the staining and explain what we see so you understand the cause.
Used carelessly, acid can etch mortar and lighten the joints. We match the dilution and dwell time to your brick and mortar, and we avoid over-saturating older or softer brickwork. Tommy assesses the condition first and talks you through the expected result.
Yes, but more gently. Older, softer and handmade bricks can't take the same treatment as hard modern extruded brick. We use a lighter approach — sometimes low-pressure washing with a gentle cleaner rather than a full acid wash — to protect the brick face.
Text a photo of the brickwork to 0497 137 966 or use the instant estimator for a guide. Tommy will assess the brick type and extent of staining and confirm a fixed price within the hour.
Contact Wave Wash Pressure Cleaning today to discuss your cleaning requirements and request a free quote.
A budget guide for your Sydney property in under 30 seconds. No hidden fees or surprises.
Includes $$50 off when you book online. Minimum call-out $150. Final price confirmed after photo or site review.