Kenilworth roofing is dominated by the Victorian and Edwardian villas, and on those the trouble is almost never in the main slope.
It is in the additions. A villa of this type has a bay roof, often a porch roof, frequently a rear addition roof, and every one of those is a small roof meeting a big one at an abutment. Those junctions were flashed once, a hundred years ago, and they are where the water gets in. We are called out to far more failed abutments and bay roofs in this town than failed main coverings, and the repair is usually a fraction of the re-cover people assume they need.
Covering is slate or clay tile on cut timbers. Inside the conservation area the material is not a free choice, and around Avenue Road the roofscape is part of what the designation protects.
The later housing is concrete tile on trussed rafters and much simpler. The weight point still holds: a roof built for concrete tile will generally take slate, but a roof built for slate cannot always take concrete tile.
Re-covering triggers a Building Regulations requirement to look at insulation, and we arrange that inspection and see it through to sign off. More on our roofing page.