Over the last couple of years we have been asked to remove moss from roof areas, both flat & pitched.
A build up of moss on a shallow pitched roof, can in advanced conditions, cause water to penetrate the roof coverings.
Moss also blocks soakaways and guttering, causing rainwater to run down the walls and causing dampness and staining.
Jet washing of roofs is not only dangerous if no scaffolding is present, but harmful to the slate or tile covering. Soakaways also suffer with overload of water and a consequent build up of debris. This just moves a simple roofing problem elsewhere!
We have found the answer to long term moss removal.
Its a spray-on treatment that slowly and effectively kills Lichen and algae to leave a moss free roof.
Once treated, the surface requires no waterblasting, scrubbing or rinsing.
The surfactants work on contamination in conjunction with the elements (wind and rain) to slowly but gently wash the contamination away from the treated surface. In the very worst case scenario, it can take 6-12 months for stubborn contaminations to come clean.
This is because the product can still be working (or cleaning) for up to 12 months.
If the surface to be cleaned is not fully exposed to rainfall or is vertical, some assistance may be required to remove contamination, just thoroughly wet the dry surface with the product then forget about it.
Remember: Be patient! Good things take time!