Roof Cleaning in Harrow

Why Harrow Roofs Need Professional Cleaning

Harrow sits on one of the highest points in North West London, and the elevated position of areas like Harrow on the Hill means rooftops are heavily exposed to wind-driven rain and moisture. This, combined with the mature tree canopy across residential streets in Greenhill, Headstone, and Wealdstone, creates ideal conditions for moss, algae and lichen to take hold on roof tiles.

Much of the housing stock in the HA1 and HA2 postcode areas consists of 1930s semi-detached homes with concrete tiled roofs, the type most susceptible to moss build-up. Left untreated, moss roots work their way between tiles, lifting them and allowing rainwater to penetrate the felt underneath. Properties in North Harrow and West Harrow commonly suffer from thick moss growth on north-facing slopes where sunlight is limited for much of the year.

Our roof cleaning service across Harrow removes moss, algae and organic growth safely, followed by a biocide treatment that inhibits regrowth for years. We work on all roof types found across the borough, from the period slate roofs on Harrow on the Hill to the flat roofs common on 1960s flats in Rayners Lane and Kenton.