1930s–1970s
Bungalows put a lot of roof area on a small footprint — leaks travel further before they show, and ventilation is the recurring weak point.
Concrete or clay tile at 30–35° pitch, large hipped roof, often with a low-pitch extension or sun-lounge flat roof at the side or rear.
Each area page covers the specific local stock, planning context and indicative cost band.
Per-m² rate is lower than a two-storey job because scaffold is simpler, but the larger roof area can push the total comparable.
Mostly unrestricted; a re-roof is a good moment to add ventilation and insulation to current standards.
Roughly in order of cost for the same covering: mid terrace, end terrace, bungalow, semi detached, detached. Access constraints drive terrace pricing, roof area drives bungalows, and detail count drives detached houses.
Natural slate 80 to 100 years, clay tile 60 to 100, concrete tile 40 to 60, EPDM 20 to 25, GRP 20 to 30, felt 10 to 20. In practice the covering usually outlives the underlay, battens, flashings and mortar, and those are what fail first.
Repair when the failures are localised and the underlay and battens are sound. Replace when nail fatigue is general, the underlay has perished, or you have paid for three separate repairs in as many years on the same slope.
