Opening vents in roof lanterns are usually driven by a chain actuator on a switch, remote or rain sensor. Send photos from Hanworth (TW13) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need opening vent and actuator repairs
- Vent won't open or close
- Leaks from around a closed vent
- Rain sensor doesn't close the vent
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.
Covering Hanworth and nearby
Sun and UV do more damage than rain on many lanterns here: brittle ridge caps, chalky finishes and hardened gaskets. They're cheap to replace before they let water in.
London's extensions are often tight to neighbouring walls and roofs. Where a repair needs access over a neighbour's property, we'll tell you in advance so you can arrange it.
Hanworth is around 12 miles from Westminster, and both are within our Greater London coverage.
If you're just outside Hanworth, we also cover Hampton (2 miles), Feltham (2 miles), Sunbury-on-Thames (3 miles).
Guide prices for opening vent and actuator repairs in Hanworth
Most opening vent and actuator repairs jobs come in between £195 and £545 ex VAT (£234–£654 including 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 England?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in England. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010; we confirm in writing which route applies before any replacement. Listed buildings need listed building consent from the local council for alterations, and conservation areas can have extra controls; like-for-like repairs are treated differently from changes, so check with the council's conservation officer first.
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 Hanworth: questions
How do I get a price for opening vent and actuator repairs in Hanworth?
Send a few photos of the lantern and the problem, with your Hanworth postcode. We'll reply with a guide price and tell you whether a visit is needed before we can fix the price.
Which places near Hanworth do you cover?
As well as Hanworth, we cover nearby Hampton, Feltham, Sunbury-on-Thames, Hounslow and the rest of Greater London.
How much does a vent repair cost?
Usually £195–£545 ex VAT per vent, confirmed in writing before work starts.
Can you add a rain sensor?
Often, if the actuator and control are compatible.
Other lantern repairs in Hanworth
- Upstand and kerb repairs in Hanworth
- Misted glass unit replacement in Hanworth
- Cracked lantern glass replacement in Hanworth
- Aluminium roof lantern repairs in Hanworth
- Roof lantern replacement in Hanworth
- Orangery lantern repairs in Hanworth
Opening vent and actuator repairs near Hanworth
More about opening vent and actuator repairs · All roof lantern repairs in Hanworth