Chapter one
Reading a roof that grew plot by plot
Ifold homes began as modest weekend dwellings, so a roof can record every extension, each one with a join worth checking.
Ifold is a twentieth-century place. According to the Plaistow and Ifold Parish Council, the Ifold House estate was divided into building plots that were sold from 1931, and by the 1950s every plot had gone. The first owners put up basic dwellings, used as weekend or holiday retreats, and none of them had mains services. Homes that began that modestly are often added to. A porch becomes a hall, a kitchen is pushed out at the back, a loft is boarded and lit. Each change leaves its mark overhead, so a single Ifold house can carry two or three roof coverings, laid in different decades by different hands, with no guarantee that the people who laid them used the same methods.
At a glance
- Plots were sold from 1931 and built on
- First dwellings were basic weekend retreats
- Every extension adds a join between roofs

1.1 Where the old roof meets the new
Our survey starts at the joins. Where a newer pitched roof butts against an older wall, the weatherproofing is a flashing, lead folded and dressed over the junction, and we check that it is still tucked into the brickwork and has not split or lifted. Where two slopes meet in a valley channel, we look for blockages and for the state of the underlay, the membrane laid under the tiling, which on an early roof may be perished or missing altogether. Inside the loft we read the timbers for old staining. Water runs along a rafter before it drops, so the damp patch on a ceiling is rarely under the hole, and we follow it back to its source before any quote is written. Our pitched roofing page explains the coverings you are likely to meet on a house like this.

1.2 Flat sections on pitched houses
Plenty of additions have a flat or near-flat roof. Rainwater needs a fall to leave one: IKO, citing BS 6229:2018, recommends a finished minimum of 1:80, with the roof designed to 1:40 so that the finished fall still reaches it. A flat roof laid dead level holds puddles and ages quickly. When we recover one, we put the falls right rather than covering the old fault with fresh membrane. EPDM, a rubber sheet, and GRP, a glass-fibre laminate, are the usual choices, and our flat roofing page compares them. Where a flat roof sits against a pitched slope, the upstand and flashing along that edge decide whether the room below stays dry through winter.
How we survey a house that has been extended
- Walk the joins We follow each seam where one roof meets another roof or a wall.
- Photograph faults Each split flashing or slipped tile is photographed on your own roof.
- Check the loft Staining on rafters shows where water has been travelling before it drops.
- Write it up The written quote follows, naming the smallest job that closes the fault.





