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Dark slate roof with skylights, curved dormers, and bird-deterrent spikes along the edge

Roof window repair in London for leaks and failed seals

Leaks, draughts and misted glazing diagnosed. Compatible flashing fitted where needed. Conservatory roof-window repair experience evidenced.

What matters when a roof window fails

Cause identified first

We separate fitting faults, seal failure, glazing problems and condensation before advising.

Repair or replace honestly

The decision is based on age, condition and compatibility, not guesswork.

Weatherproofing restored

Compatible flashing and careful opening preparation help keep water out for good.

Not every leaking roof window needs replacing

A roof window can fail in different ways. Water may be getting in around the installation, the glazing unit may have broken down, the seals may be tired, or the window may simply be awkward, draughty or no longer opening as it should. The first job is working out which problem you actually have. We inspect leaks, flashing, frame condition, operation and the surrounding roof detail so rainwater entry can be separated from condensation or a glazing fault. With Roofwise Roofing Services, the decision to repair or replace starts with diagnosis, not with a catalogue.

Dark grey slate roof with two skylight windows and brick chimney
Dark slate roof with skylights, curved dormers, and bird-deterrent spikes along the edge

Replacement only when repair no longer makes sense

Age, overall condition, energy performance, compatibility with the existing opening and the likely life left in the unit all affect the next step. If repair is sensible, we carry it out carefully. If replacement is the better call, we prepare the opening, fit compatible flashing and weatherproof the new window into the roof properly. Documented conservatory roof-window repair work also shows how we approach awkward leak problems in practice.
Through Roofwise Roofing Services, the aim is a roof window that works cleanly and stays dry.

Frequently asked questions

Can a leaking roof window be repaired?

Often, yes, if the problem lies with flashing, seals, minor deterioration or the surrounding roof detail. If the unit itself is beyond sensible repair or the opening needs more extensive work, replacement may be the better answer. We inspect first and explain which camp it falls into.

How do you tell condensation from a roof-window leak?

Condensation and rainwater entry can look similar at first glance, but the pattern, location and condition of the glazing and surrounding detail usually tell the story. We check the window, flashing and opening so we are not blaming the weather for a fitting fault, or vice versa.

When is replacement the better option?

If the roof window is old, badly deteriorated, inefficient, no longer operating properly or incompatible with a reliable repair, replacement can save repeated trouble. We look at repairability, energy performance and the opening itself before recommending that route.

Dark slate roof with skylights, curved dormers, and bird-deterrent spikes along the edge

Get the roof window checked properly

Call us if the roof window is leaking, misting or sticking, and we will explain whether repair or replacement is the better route.

Contact us

Roofwise Roofing Services

Michelin House Fulham,
London,
SW3 6RD

Business hours

Monday: 8 am–5 pm
Tuesday: 8 am–5 pm
Wednesday: 8 am–5 pm
Thursday: 8 am–5 pm
Friday: 8 am–5 pm
Saturday: 9 am–12 pm
Sunday: Closed

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ROOFWISE ROOFING SERVICES LIMITED - 08922889 - Michelin House, Fulham Road, London, England, SW3 6RD

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