The short answer
On homes built from 2008 onwards, faults tend to sit at the joints between parts of the roof, not in the covering itself. Ridge and hip tiles lift, flashings loosen, and valleys, bays and porch roofs let water past a failed seal. They are repairs, and a survey finds the one that matters.
A roof built in the last twenty years benefits from better underlay, better fixings and better detailing than one built in the 1970s. That does not make it maintenance-free. Wichelstowe houses have complicated rooflines, with bays, porches, short returns and flat sections, and that is where trouble starts.
Q1.1What goes wrong at the ridge, hip and verge?
The ridge is the capping along the apex, a hip is the angled run that forms an outward corner between two slopes, and the verge is the tiled finish at the side of a gable. Modern builds often use dry-fix systems, which are mechanical clips and strips and not wet mortar. Dry-fix is tested to BS 8612, but the end caps and sealing strips can still work loose in strong wind, particularly at gable ends. We re-secure them or replace the failed part, and check the neighbouring pieces while we are up there. Our ridge and verge dry-fix page explains how it works.
Q1.2Why do flashings and wall junctions lift?
Wherever a slope runs into a wall or a chimney, a flashing, usually lead, seals the junction. On new houses these are often dressed tight and left unpainted, and movement in the building can lift them in the years after completion. A flashing that has lifted at one corner can soak a wall for months without any sign inside.
Q1.3What about gutters, bays and flat sections?
Small flat roofs over bays and porches are covered in lead, GRP or single-ply membrane, and the joints are where they fail. If the surface is sound, we repair the joint. Every fault is photographed, and the pictures go in your quote. Where a leak needs dealing with promptly, we prioritise it and make the roof safe first; our roof repairs page describes how we work.