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Glasgow · G2 · Glasgow & Dunbartonshire

Rooflight leak repairs in Glasgow

Water dripping under a rooflight does not always mean the rooflight itself has failed. It might be the sealant, the flashing, the upstand, or water sitting on the roof against the kerb. That is why a repair in Glasgow starts with finding the cause rather than reaching for a sealant gun. The investigation visit is charged, and we confirm that price before you book it. Once we know what is wrong, you get a written quote for the repair, or honest advice that replacement makes more sense.

Guide price from £145 · Charged visit, then repair priced before any work

What the job costs in Glasgow

Diagnostic visit

£145 – £195including VAT at 20%

Roof and inside inspected, cause found, written repair price

Reseal and re-flash

£295 – £645including VAT at 20%

Failed sealant and flashing taken out, joints cleaned, resealed and taped

Upstand or membrane repair

£645 – £1,445including VAT at 20%

Rotten kerb section or roof membrane at the upstand repaired

Guide ranges. The first visit is charged and priced before booking; any repair is priced in writing before work starts. Scaffold, access towers or a crane are priced separately if the job needs them, and building warrant fees, where a job needs them, are shown as their own line.

Fitting across Glasgow and nearby

Distance is rarely the deciding factor. A roof in Rutherglen, 3 miles from Glasgow, gets the same survey, the same written quote and the same fitting process as one in G2, G4 and G1. What changes the price is the job itself: size of unit, roof type, access and lifting. Bishopbriggs, around 3 miles out, is treated the same way.

What the job includes

  • Membrane splits at the upstand cut back and patched
  • Inside check of stains, frame drainage channels and the reveal
  • Rotten kerb sections replaced where the timber has gone soft
  • Warranty and who fitted it — We ask who fitted the rooflight and when before working on it.
  • Leak or condensation — We work out whether the water is coming from outside or forming inside on cold glass.

How a repair visit goes

Most of the effort on a repair visit goes into finding the cause. We start with your account of when it leaks: heavy rain, wind from one direction, or cold mornings, which points towards condensation. That shapes where we look first. Findings are photographed so you can see them for yourself. You then get a clear explanation and, where needed, a written repair quote, fixed before anything further is booked.

Planning, building warrants and Glasgow

For Scottish homes: building warrant for new rooflight openings; no warrant for replacing a rooflight complete with its frame, provided it meets the standards, including 1.6 W/m²K; planning permission in conservation areas and listed building consent for listed properties. Outside those, permitted development usually covers house rooflights, but the planning authority has the final word, so we check before you commit.

What to send us

Photos help us price the visit. Send one of the stain or drip inside, one of the rooflight from outside if you can reach a safe viewpoint, and a note of when it leaks: in heavy rain, in wind, or all the time. Add the postcode, G2 or similar, and how the roof is reached.

Common questions in Glasgow

Can you replace just the misted glass?

Often, yes. Misting between the panes means the sealed unit has failed, but the frame around it may be perfectly sound. Where the maker's design allows the glass to be changed, we measure the unit and fit a replacement, which costs less than a whole new rooflight. Where it does not, or the frame is also worn out, we explain why replacement is the better option.

Will resealing fix my leaking rooflight?

Sometimes. If the sealant has simply aged and the flashing, upstand and glass are sound, a careful reseal on a dry day can solve it. If the real problem is ponding water, a low upstand or a perished membrane, fresh sealant will only hide it for a while. We tell you which one you are dealing with before recommending any work, and quote the proper fix in writing.

Why is my rooflight leaking?

The usual causes are sealant that has cracked or pulled away, flashing or membrane that has perished at the edges, condensation channels blocked with dirt, water ponding against the kerb, or a seal failing on the glass unit. Sometimes the water is coming in elsewhere and running along to the rooflight. A diagnostic visit finds the real source before anyone starts applying sealant.

For a repair in Glasgow, start with photos and the postcode; we confirm the visit price before anything is booked.

Rear extension at dusk with lit rooflights and a roof lantern
Ready when you are

Leak repairs in Glasgow

Send photos of the problem and we will tell you what a visit costs before booking.

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