
About the product
Monestir Anti-Algae Anti-Mold Cleaner is Monestir's professional treatment to remove green and black stains, and mold from exterior pavements and surfaces. Prolonged chemical action dissolves organic dirt without physical effort or intensive scrubbing. Compatible with stone, rustic stoneware, terracotta, ceramic, and cement. Does not damage pavements or grout. Available in 1, 2, 5, 10, and 25-liter containers.
Which surfaces and stains is it ideal for?
- ✓ Terraces, patios, and porches with accumulated green growth due to rain and humidity
- ✓ Garden pavements — natural stone, rustic stoneware, terrazzo, and tiles
- ✓ Pool edges and damp areas with algae and mold
- ✓ Facades, walls, and plinths with organic stains
- ✓ Blackened exterior grout and tiles
Why choose Monestir Cleaner
- ✓ Prolonged chemical action — cleans without heavy scrubbing — the product acts through a chemical reaction on green growth and mold during the contact time; no need for heavy scrubbing; especially useful on porous surfaces where green growth penetrates the pores
- ✓ No annoying fumes or odors — comfortable for outdoor use — the formulation does not generate toxic fumes or strong odors during application; it can be used on terraces and in gardens without disturbing neighbors or family
- ✓ Restores natural color — without altering the finish — removes the organic layer that darkens the pavement and restores the material's original tone without attacking the surface or the grout
- ✓ 5 formats — from 1 L for touch-ups to 25 L for large projects — the smallest format covers spot cleaning; the 25 L is the most economical per liter for communities, cleaning companies, and large-scale projects
Dilution according to dirt type
| Situation | Dilution | Contact time |
|---|---|---|
| Very old and ingrained green stains | Undiluted | 30–60 minutes |
| General maintenance cleaning | 1 part product : 3 water | 10–30 minutes |
| Periodic preventive maintenance | 1 part product : 5 water | 5–10 minutes |
How to apply — 4 steps
- Prepare the pavement: sweep thoroughly and remove loose dust. The product works best on surfaces clean of solid debris.
- Apply: spread the product (undiluted or diluted according to the table) with a mop, brush, or sprayer. Allow to act for the indicated time without letting it dry.
- Scrub and remove: once the dirt is dissolved, scrub with a brush or scourer to remove organic residues. For deep cleaning, use a rotary machine with a nylon or tynex disc.
- Rinse thoroughly with clean water. To avoid white efflorescence, perform a second rinse with a 1:20 dilution of the product in water. Collect with a mop, sponge, or wet vacuum.
Do not apply under direct sunlight or on hot surfaces. Test beforehand in an inconspicuous area. Avoid prolonged contact with metals and vegetation.
Formats and prices
| Format | Price | Ideal for |
|---|---|---|
| 1 L | €11.22 | Spot touch-ups and small areas |
| 2 L | €23.33 | Domestic terraces and patios |
| 5 L | €53.23 | Gardens and medium-sized surfaces |
| 10 L | €94.04 | Communities and frequent professional use |
| 25 L | €219.22 | Large projects, cleaning, and maintenance companies |



















