Stonehouse roofs, specifically
Where the Stroud valley meets the Severn Vale.
Stonehouse sits about three miles west of Stroud, at the point where the Frome valley widens out and runs onto the flat land of the Severn Vale, with the M5 just beyond Eastington. That position gives local roofs two different kinds of weather. Down on the valley floor, the River Frome and the Stroudwater canal keep the air around Ocean, Bridgend and Ryeford damp, and mist sits low on still autumn mornings. Out on the western and northern edges of town, roofs are more exposed and take the wet south-westerly weather that blows in across the vale. Doverow Hill rises to the north and Selsley Common to the south-east, so some streets are sheltered and some are not, and that changes how quickly a roof turns green.
The housing is a mix you don't find in many Stroud district towns. Stonehouse was a brickmaking town for over a century, and the Stonehouse Brick and Tile Company worked here from 1891 until 1968, so many of the Victorian and Edwardian houses near the centre are brick rather than Cotswold stone. After the war came the Park Estate in the 1950s and later Rosedale, built on the old brickworks site, along with developments such as Court View. Most recently, Great Oldbury on the north-west side of town was given permission in 2016 for up to 1,350 homes, so a good number of the town's roofs are now less than ten years old.
Each of those roofs needs a slightly different approach. A young concrete tile roof at Great Oldbury usually needs a light low-pressure clean to lift algae before it turns into moss. A 1950s roof on the Park Estate may be carrying decades of moss on tiles whose surface has softened with age. Slate and clay on the older terraces, and the stone roofs in Kings Stanley and Leonard Stanley, get a manual dry moss scrape only. Every job finishes with the same biocide treatment, which is what stops it coming back.