Resealing is the planned, whole-lantern version of a leak repair: we cut out the old, failed sealant, clean every joint back to a sound surface and reseal the cappings, ridge and eaves with materials that suit the frame. Send photos from Potters Bar (EN6) and we'll tell you which it is — with the price agreed in writing before any work.
Signs you need roof lantern resealing
- Several small leaks rather than one obvious one
- Sealant applied over sealant from previous patch repairs
- A lantern that is 8–15 years old and has never been maintained
Why it happens
Sealant past its life
Exposed sealant on a roof takes UV, frost and constant expansion and contraction. It hardens, loses grip and pulls away from the glass.
Patch over patch
Fresh sealant run over old, dirty sealant rarely bonds. It looks fixed for a season and then lets go.
About Potters Bar and the EN6 area
Most inland lantern leaks aren't storm damage; they're usually tired sealant, a lifted capping or blocked eaves drainage. All three are quick to find and fix once you know where to look.
Potters Bar is around 8 miles from St Albans, and both are within our Hertfordshire coverage.
Neighbouring places we cover include Barnet (3 miles), Enfield (5 miles), Borehamwood (5 miles).
What should you expect to pay in Potters Bar?
Typical range: £245–£495 ex VAT, which is £294–£594 with VAT, per lantern. 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.
Roof lantern resealing in Potters Bar: questions
Do you cover Potters Bar?
Yes. We cover Potters Bar, including the EN6 postcode area, as part of Hertfordshire. Send photos by WhatsApp or the form for a free guide price, and we'll confirm the fixed price in writing before any work starts.
Which places near Potters Bar do you cover?
As well as Potters Bar, we cover nearby Barnet, Enfield, Borehamwood, Hatfield and the rest of Hertfordshire.
How much does it cost to reseal a roof lantern?
A standard-size lantern on a single-storey extension is usually £245–£495 ex VAT. Larger lanterns, difficult access or gasket replacement add to that, and you get the fixed price in writing first.
Can you match the colour of my frame?
We use sealants in common frame colours such as anthracite grey, black and white, and match as closely as the range allows.
Other lantern repairs in Potters Bar
- Upstand and kerb repairs in Potters Bar
- Cracked lantern glass replacement in Potters Bar
- Timber roof lantern repairs in Potters Bar
- Flat rooflight and skylight repairs in Potters Bar
- Leak investigation and inspection in Potters Bar
- Cleaning and maintenance in Potters Bar
Roof lantern resealing near Potters Bar
More about roof lantern resealing · All roof lantern repairs in Potters Bar