Roof Cleaning in North Harrow

Moss and Algae on North Harrow Rooftops

North Harrow is predominantly a residential suburb of neat 1930s semi-detached houses, many of which still have their original concrete roof tiles. These interlocking tiles are durable but their textured surface is a magnet for moss spores, which thrive in the damp climate of the HA2 area. Walk down any street around Pinner Road or Headstone Lane and you will spot thick green moss cushions on roof after roof.

The generous gardens and mature hedgerows that make North Harrow so attractive also contribute to the problem. Overhanging branches shade sections of the roof, keeping tiles damp well into the afternoon and creating perfect growing conditions for algae and lichen. North-facing roof slopes are particularly affected, often developing thick moss within just a few years of the last clean.

We regularly clean roofs throughout North Harrow, removing moss down to the tile surface before applying a professional biocide that keeps regrowth at bay. Our team uses safe access equipment and works methodically from ridge to eaves, clearing gutters as part of the process.