Most roof lantern leaks start as small, preventable problems: blocked eaves, a lifted capping, a tired seal. We carry out cleaning and maintenance across South Glamorgan, with a guide price from your photos and a fixed price in writing before any work starts.

Signs you need cleaning and maintenance
- Dirty glass or green algae on the frame
- Leaves or moss at the eaves
- The lantern is under trees
What usually causes it?
Debris
Leaves and moss block drainage.
Unnoticed wear
Nobody looks at the roof until it leaks.
Roof lanterns in South Glamorgan
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.
What should you expect to pay for cleaning and maintenance in South Glamorgan?
Typical range: £95–£245 ex VAT, which is £114–£294 with VAT, per visit. 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.
Cleaning and maintenance in South Glamorgan: questions
What does a maintenance visit cost?
Usually £95–£245 ex VAT per visit depending on size and access, confirmed in writing before the visit.
Do you clean the inside of the glass?
We can, where safe access from inside is possible; let us know when booking.
Which towns in South Glamorgan do you cover?
All of South Glamorgan, including Cardiff, Barry, Penarth, Cowbridge, Llantwit Major. Rural and remote addresses are covered by arrangement.
How do I get a price for cleaning and maintenance in South Glamorgan?
Send a few photos of the lantern and the problem with your postcode, by WhatsApp or the form. We reply with a guide price and confirm the fixed price in writing before any work starts.
Other repairs in South Glamorgan
- Glazing bar and capping repairs in South Glamorgan
- Flat roof junction and flashing repairs in South Glamorgan
- Misted glass unit replacement in South Glamorgan
- Urgent leak make-safe in South Glamorgan
- Orangery lantern repairs in South Glamorgan
- Commercial roof lantern repairs in South Glamorgan
Nearby areas
- Cleaning and maintenance in Mid Glamorgan
- Cleaning and maintenance in Gwent
- Cleaning and maintenance in West Glamorgan
- Cleaning and maintenance in Powys
- Cleaning and maintenance in Dyfed
More about cleaning and maintenance · All roof lantern repairs in South Glamorgan