Zyax Moss & Mildew Remover Spray is a ready-to-use, no-scrub spray that lifts moss, mildew and algae stains from hard surfaces indoors and out. The fast-acting formula kills 99.9% of bacteria and restores the original look of walls, stone, concrete and wood, while helping slow regrowth. It is a practical moss remover and surface cleaner for homes, societies and commercial sites.
What it removes
- Green moss and lichen on walls, paving and terraces
- Black, grey and white mildew and mould on damp surfaces
- Algae films on stone, concrete and outdoor furniture
- Musty odours and surface staining that come with them
Surfaces you can use it on
Exterior and compound walls, terraces and balconies, roofs and paving, driveways, concrete and cement, natural stone and tiles, wood and fences, and outdoor furniture. For large or heavily soiled areas, the Moss & Mildew Remover Concentrate dilutes with water to cover more ground.
How to use
- Shake well, then spray directly onto the affected area until it is evenly wet.
- Leave it to work for 10 to 15 minutes, longer on thick or old growth.
- Rinse or wipe away. Most surfaces need no scrubbing; reapply on stubborn moss.
- On delicate or coloured surfaces, test on a small hidden area first.
Moss, mildew or algae: what is the difference
Moss is the thick green growth on damp walls and paving, mildew and mould are the flat black, grey or white patches on shaded humid surfaces, and algae is the slippery green or black film that appears after rain. This remover is formulated to tackle all three in one step.
Stopping moss and mildew coming back
Moss and mildew thrive on damp, shaded, poorly drained surfaces. After cleaning, improve drainage and light where you can, clear leaves and debris, and reapply at the first sign of regrowth. Read our full guide on how to remove moss and mildew from walls, terraces and outdoor surfaces, and browse more home care and stone care products. Available in 500 ml, 1 L and 5 L.
Frequently asked questions
What surfaces can I use it on?
Walls, terraces, roofs, paving, concrete, natural stone, tiles, wood, fences and outdoor furniture, indoors and out.
Is it ready to use or do I dilute it?
The spray is ready to use straight from the bottle. For larger areas, use the concentrate and dilute with water.
Does it need scrubbing?
No. It is a no-scrub formula; spray, wait, then rinse or wipe. Very thick moss may need a second application.
How long does it take to work?
Usually 10 to 15 minutes, longer on heavy or established growth.
Does it remove black mould and algae too?
Yes. It lifts black and grey mildew and mould and green or black algae films, not just moss.
Is it safe to use around the home?
It is for hard surfaces indoors and outdoors. Keep it off plants you want to protect, and test delicate or coloured surfaces first.