We carry out flat rooflight and skylight repairs in Merthyr Tydfil and across the CF47 area. Flat rooflights fail in the same places as lanterns: the seal to the upstand, the roof junction and the glass unit.
Signs you need flat rooflight and skylight repairs
- Water around the rooflight edge
- Ponding on the glass (not enough fall)
- Cracked sealant or a lifted membrane at the upstand
What usually causes it?
No fall
Flat glass needs a slight fall to shed water; ponding stresses seals.
Unit failure
Edge seals fail and the unit mists.
Roof lanterns in Merthyr Tydfil
Western and upland parts of the UK get more rain and more wind-driven rain than the east, and that's what finds weak cappings and blocked eaves first. Lanterns here benefit from a check of the bars on the most exposed face and a clear eaves channel before winter.
Merthyr Tydfil is around 19 miles from Bridgend, and both are within our Mid Glamorgan coverage.
Neighbouring places we cover include Aberdare (4 miles), Tredegar (6 miles), Rhondda (7 miles).
How much should it cost?
Guide price for flat rooflight and skylight repairs: £195–£595 ex VAT (£234–£714 inc VAT), per rooflight. Towers or scaffold, where needed, are priced into the quote. Your fixed price is confirmed in writing before any work starts.
Do you need permission in Wales?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Wales. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010 (as applied in Wales); we confirm in writing which route applies before any replacement. Listed buildings in Wales need listed building consent from the local planning authority for alterations, with Cadw guidance on historic buildings; check with the council before changing a lantern on a listed property.
How does it work?
- Send photosWhatsApp or upload a few photos and tell us when it leaks.
- Guide priceWe reply with a guide price and whether a visit is needed.
- Fixed price in writingYou approve the price and the date before anything starts.
- Repair and testWe fix what's failed, water-test where it matters, and send photos.
Flat rooflight and skylight repairs in Merthyr Tydfil: questions
Do you need to visit to price flat rooflight and skylight repairs?
Not always. Clear photos are often enough for a guide price. Where the cause isn't obvious, a visit to inspect and water-test is charged from £145 ex VAT, confirmed before we come.
Can you repair a lantern someone else installed in Merthyr Tydfil?
Yes. We repair lanterns whoever fitted them. If yours is still under the installer's warranty, contact them first so you don't affect it.
What does a flat rooflight repair cost?
Usually £195–£595 ex VAT, confirmed in writing before work starts.
Can you fix a Velux-style roof window?
Our focus is flat rooflights and lanterns; pitched roof windows are a different trade and we'll say so if that's what you have.
Other lantern repairs in Merthyr Tydfil
- Upstand and kerb repairs in Merthyr Tydfil
- Condensation diagnosis and fixes in Merthyr Tydfil
- uPVC roof lantern repairs in Merthyr Tydfil
- Opening vent and actuator repairs in Merthyr Tydfil
- Roof lantern respraying in Merthyr Tydfil
- Cleaning and maintenance in Merthyr Tydfil
Flat rooflight and skylight repairs near Merthyr Tydfil
More about flat rooflight and skylight repairs · All roof lantern repairs in Merthyr Tydfil