We carry out opening vent and actuator repairs in Thurso and across the KW14 area. Opening vents in roof lanterns are usually driven by a chain actuator on a switch, remote or rain sensor.

Signs you need opening vent and actuator repairs
- Leaks from around a closed vent
- Rain sensor doesn't close the vent
- Remote or switch unresponsive
Common causes we find
Actuator failure
Chain actuators wear out or jam, especially if they've been forced.
Seal or hinge problems
A twisted hinge or worn seal stops the vent closing tight.
About Thurso and the KW14 area
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.
Close by, we also cover Wick (19 miles), Kirkwall (34 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 Scotland?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Scotland. Replacing the whole lantern or enlarging the opening is different and falls under the Building (Scotland) Regulations 2004; we confirm in writing which route applies before any replacement. Listed buildings in Scotland need listed building consent from the planning authority for alterations, with Historic Environment Scotland guidance; check 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 Thurso: questions
How do I get a price for opening vent and actuator repairs in Thurso?
Send a few photos of the lantern and the problem, with your Thurso 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 Thurso?
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.
How much does a vent repair cost?
Usually £195–£545 ex VAT per vent, confirmed in writing before work starts.
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.
Other lantern repairs in Thurso
- Ridge and hip repairs in Thurso
- Eaves beam and gutter repairs in Thurso
- Misted glass unit replacement in Thurso
- Cracked lantern glass replacement in Thurso
- Condensation diagnosis and fixes in Thurso
- Aluminium roof lantern repairs in Thurso
Opening vent and actuator repairs near Thurso
More about opening vent and actuator repairs · All roof lantern repairs in Thurso