We carry out opening vent and actuator repairs in Llanelli and across the SA15 area. Opening vents in roof lanterns are usually driven by a chain actuator on a switch, remote or rain sensor.

Is it time for opening vent and actuator repairs?
- Vent won't open or close
- Vent stops part-way or makes grinding noises
- Rain sensor doesn't close the vent
Common causes we find
Power or control faults
Transformers, control units, switches and remotes fail; we check these first.
Seal or hinge problems
A twisted hinge or worn seal stops the vent closing tight.
Covering Llanelli and nearby
Damp, mild winters keep moss and algae growing on flat roofs and lantern frames, which holds water against seals and blocks weep slots. Regular clearing makes a real difference in wetter areas.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
From Carmarthen to Llanelli is roughly 13 miles — all part of the Dyfed area we cover.
We also cover nearby Gorseinon (5 miles), Swansea (10 miles), Ammanford (11 miles).
How much should it cost?
Typical range: £195–£545 ex VAT, which is £234–£654 with VAT, per vent. 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?
In Wales, like-for-like repairs to a roof lantern don't usually involve building control. A full replacement or a bigger opening is controlled under the Building Regulations 2010 (as applied in Wales), so we set out the route in writing first. 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.
Opening vent and actuator repairs in Llanelli: questions
How do I get a price for opening vent and actuator repairs in Llanelli?
Send a few photos of the lantern and the problem, with your Llanelli postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Can you repair a lantern someone else installed in Llanelli?
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.
Can you add a vent to a lantern that doesn't have one?
Some lanterns can take a replacement vent unit in place of a fixed pane; it depends on the system. We'll check.
Can you add a rain sensor?
Often, if the actuator and control are compatible.
Other lantern repairs in Llanelli
- Roof lantern leak repairs in Llanelli
- Slipped glass panel repairs in Llanelli
- Roof lantern respraying in Llanelli
- Flat rooflight and skylight repairs in Llanelli
- Leak investigation and inspection in Llanelli
- Commercial roof lantern repairs in Llanelli
Opening vent and actuator repairs near Llanelli
More about opening vent and actuator repairs · All roof lantern repairs in Llanelli