As the photos show the building had a build-up of moss and algae. As tenants of this unit in a small trading estate, Carpetright had the responsibility to deal with this unsightly problem.
We used a Corus/Tata approved detergent applied at low pressure, ensuring that the detergent was not allowed to dry out. The panels were then thoroughly rinsed to leave an as new finish. Because it is a retail unit, work around entrance areas took place out of hours to allow normal trading.