Roof cleaning across Garston
We never jet wash a roof in Garston, the slate and tile get a careful soft wash and a biocide treatment so the moss dies off at the root instead of regrowing by spring.
Garston sits right on the Mersey, and the damp air off the river keeps roofs and walls wet long after the rain has passed. The Speke and Garston Coastal Reserve runs along the shoreline, Garston Park holds mature trees in the middle of the district, and the private parks at Cressington and Grassendale are among the leafiest corners of south Liverpool. All that shade and river damp means moss, algae and black spot come back quickly on any surface that is only rinsed rather than treated.