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Terraced House Roof Repairs — Access, Party Walls, Valleys
Most terrace roof problems happen at the boundaries: the shared valley, the party wall upstand and the joint where your covering meets next door's.
- Shared and secret valley repairs
- Party wall flashing and upstand detailing
- Rear outrigger and back-addition roofs
- Access planning where there's no side gate
- Neighbour coordination handled properly
- Repairs matched to the terrace's original material
Valleys between properties
Where two terrace roofs meet, water is concentrated into a valley that often serves both houses. Old lead valleys crack at the laps and split where they've been walked on; concrete or mortar 'repairs' over the top trap water and make it worse. We renew the valley properly in the correct lead code, with the right bay lengths and a sound valley board underneath.
Party wall abutments
Where a parapet or party wall rises above the roofline, the flashing into it is the single most common leak point on a terrace. Mastic smeared into the joint is a two-year fix at best. We rake out, form the flashing in bays, wedge it into the raked joint and repoint — which is why those repairs then last.
- ▸Raked and wedged, not mastic-sealed
- ▸Correct laps and bay lengths
- ▸Cover flashing renewed rather than patched
Access without a side entrance
Mid-terrace access is the practical problem. We plan scaffold routes at the survey, agree any neighbour access in advance and in writing, and protect shared paths and planting. If a job needs a licence for pavement scaffold we'll tell you at quote stage rather than on the morning.
FAQs
Do I need my neighbour's permission?+
For access over their property, yes — we'll help set that out clearly. Work on a shared valley may also engage the Party Wall Act; we'll flag it if so.
Can you repair just my half of a shared valley?+
Sometimes, but it's usually poor value. A valley renewed as one length lasts far longer than two halves lapped in the middle.
Can you match old terrace tiles?+
Usually. Reclaimed stock is widely available for common Victorian and Edwardian profiles, and we bring samples where the match is critical.
Related reading
Other pages homeowners usually look at alongside this one.
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