Actiwash Pro is Hansbury Chemicals' professional-strength version of Actiwash, a nearly pH-neutral biocide for removing and controlling red, green and dark organic staining on exterior surfaces. It is five times more concentrated than Actiwash Domestic, so one 5 litre container makes up to 255 litres of solution, and is intended for large areas and commercial jobs. It is bleach-free (chlorine free), biodegradable and hard-water resistant, and its anti-microbial action slows recontamination.
- 5 litres makes up to 255 litres (5x the concentration of Actiwash Domestic)
- For professional users, large areas and commercial work
- Removes red, green and dark staining (algae, mould, fungi, lichen)
- Non-bleaching, chlorine free; biodegradable; hard-water resistant
- Apply and leave - natural weathering clears the dead biofilm
- PCS 102639, approved by the Dept of Agriculture, Food and the Marine
Dilution guide (Hansbury)
Ratio is water to product. Coverage is per litre of mixed solution.
| Surface | Mild | Heavy | Coverage | Method |
|---|
| Roof tiles & stone | 35:1 | 25:1 | 2 m² per L | Apply & leave |
| Timber | 50:1 | 40:1 | 4 m² per L | Apply & leave |
| Concrete, block paving & cobbles | 40:1 | 35:1 | 4 m² per L | Apply & leave |
| Tarmacadam | 40:1 | 35:1 | 2 m² per L | Apply & leave |
| Render | 40:1 | 25:1 | 2 m² per L | Apply & leave |
| Polytunnels, plastic & metal cladding | 50:1 | 40:1 | 4 m² per L | Brush & rinse |
How to apply (Hansbury treatment guide)
Prepare a diluted solution of Actiwash in the tank of the chemical application equipment. Saturate the (dry) roof with the prepared solution by either spray or brush, then leave.
Apply onto a dry substrate in temperatures above 7 degrees Celsius when rain is not expected for at least a few hours post-treatment. Ensure the surface stays wet for 30 minutes after treating with Actiwash. Avoid applying onto very hot surfaces as the solution may evaporate too quickly.
If the roof is particularly contaminated, we recommend a brush agitation of the solution.
Results (Hansbury): green algae clears within about a week, red staining in 2 to 3 weeks, and established dark staining over several months as it weathers away. Severe biofilms may need a second application or brush agitation.
Safety (Hansbury)
Hand protection: Wear chemical resistant gloves. Wash hands after use. Eye protection: Visor in combination with goggles. A device for rinsing eyes must be available at the workplace. Body protection: Protective clothing. Full head, face and neck protection. Respiratory protection: Respirator. Filter type is specified in the relevant SDS. Keep animals away from the area during treatment and until the area has dried. Avoid contamination of ponds. Avoid excessive run-off into drains. Avoid excessive run-off into soil. Block drainage pipes which are used for rainwater harvesting. Detailed health and safety information can be found in the product safety data sheet.
Always read the label and safety data sheet before use. Use biocides safely.
Free delivery on orders over €100 anywhere in Ireland, or collect from our yard in Clonminam, Portlaoise.
