In Milford Haven, as everywhere, each glazing bar on a roof lantern has a top capping that clamps the glass onto gaskets. Send photos and we'll tell you what we think has failed.

Signs you need glazing bar and capping repairs
- Gasket rubber poking out, cracked or missing
- Water running down one glazing bar inside
- Rattling or whistling in wind
What usually causes it?
Gasket shrinkage
Rubber gaskets shrink back from the ends over time, leaving a gap at the ridge or eaves.
Fixings working loose
Screws and clips that hold the capping relax with thermal movement, so the clamp on the glass weakens.
About Milford Haven and the SA73 area
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.
Coastal wind drives rain hard against lanterns, so cappings and ridge seals on the seaward face take the most punishment.
Milford Haven is around 33 miles from Carmarthen, and both are within our Dyfed coverage.
Close by, we also cover Pembroke Dock (4 miles), Haverfordwest (7 miles), Cardigan (30 miles).
What should you expect to pay in Milford Haven?
Typical range: £165–£395 ex VAT, which is £198–£474 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 Wales?
Most lantern repairs in Wales need no approval at all. Where a job turns into a replacement, the Building Regulations 2010 (as applied in Wales) apply and we confirm how the work will be signed off before we start. 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.
Glazing bar and capping repairs in Milford Haven: questions
Can you repair a lantern someone else installed in Milford Haven?
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.
Which places near Milford Haven do you cover?
As well as Milford Haven, we cover nearby Pembroke Dock, Haverfordwest, Cardigan, Carmarthen and the rest of Dyfed.
Can a capping just be clipped back on?
Sometimes, if nothing underneath has failed. We check the gaskets first, because clipping a capping over a perished gasket doesn't stop the leak.
Do you repair uPVC and timber lantern bars too?
Yes. Timber lanterns use different beads and cappings, and we repair those as part of timber lantern repairs.
Other lantern repairs in Milford Haven
- Ridge and hip repairs in Milford Haven
- Solar control and self-cleaning glass upgrades in Milford Haven
- Timber roof lantern repairs in Milford Haven
- Opening vent and actuator repairs in Milford Haven
- Cleaning and maintenance in Milford Haven
- Commercial roof lantern repairs in Milford Haven
Glazing bar and capping repairs near Milford Haven
More about glazing bar and capping repairs · All roof lantern repairs in Milford Haven