Algae, moss, lichens, treatment and removal
Moss growing on any roof surface will be more severe on roof sections that area shaded and exposed to periodically damp cool weather conditions.
Moss removal from roof surfaces prevents secondary damage.
Moss, lichen and algae on a roof disturbs the flow of rainwater across the roof surface. Growth thrives where the supply of moisture is best and establishes itself where the slates overlap especially along the lower edge, the tail end, of the slate.
During heavy rain, the lap cavities will overflow inside the building. Most roofs have a notional second line of defence in the form of a bituminous felt, but it does not always perform perfectly and is not designed for long term protection.
The battens and fixings, situated above the felt undergo accelerated decay.
Moss also release small amounts of organic acids that are corrosive to metal, particularly the lead and zinc used in soakers and flashings.
We offer free advice and quotes on all moss / algae related cleaning. Call us today on 08000 933267 Email.