Stage 03 · On site
Pitched, flat and roofline together
A larger house puts pitched slopes, flat sections and a long roofline in one project, and the order we work in matters.
On a bigger Woldingham house the roof is rarely one thing. A tiled main slope may meet a flat roof over a kitchen or porch, with lead between them and a long run of gutter around the lot. We plan these jobs as one, so each part is dealt with in the right order and nothing is left leaking while we work on another. Lead goes in before the covering that laps over it, and gutters are fixed last so ladders and scaffold do not damage them.
How long should a flat covering last?
The figures are ranges, never promises. For EPDM the GreenSpec guide expects 20 to 30 years of service. A flat roof cost guide from Less puts GRP at 25 to 40 years and felt at 10 to 20, with the lower numbers for felt. What decides a real roof is its detailing and drainage: BS 6229:2025 keeps a minimum finished fall of 1:80 on general areas and internal gutters, and a roof that holds standing water ages faster. When we look at a flat roof we check the falls, the upstands and the outlets before we talk about the covering. Our flat roofing page explains the systems we fit.
Drainage on a flat roof deserves its own check. We look for ponding after rain, outlets clogged with leaves and moss, and splits where the covering turns up a wall.