*Coverage depends heavily on:
- how porous the timber is
- how severe the mould growth is
- whether the surface is rough-sawn or smooth
- whether you are spraying lightly or saturating the area
For a typical outdoor mould remover on timber cladding, a practical estimate is:
- Light mould / maintenance clean:
~8–12 m² per litre - Moderate mould contamination:
~5–8 m² per litre - Heavy mould or very absorbent/weathered timber:
~3–5 m² per litre
Rough-sawn cedar, old pine, or dry weathered timber usually absorbs much more product than painted smooth cladding.
Approximate coverage: 1 litre covers 5–10 m² depending on surface porosity and mould severity.
4 Litre - BORN Outdoor Mould Removal
BORN Outdoor Mould Removal destroys Slippery Black Algae and Slimy Green, Moss and mould. Fast result can be seen without much effort, simply spray and watch it disappear! Yet it is biodegradable.
Outdoor mould removal will remove Black Algae, Moss and Green Slime from concrete slabs in particular, but also Timber Fibro, Bricks,Sandstone, Quarry Tiles, Hardcourts, Synthenic Grass, Tile roofing.
Its action is immediate and brief, killing the spores and leaving the surface clean. The product has a continuing effect, so cleaning job is less frequent.

