The ridge is where the hip bars and glazing bars meet at the top of a lantern, usually under a moulded or pressed end cap. Send photos from Tredegar (NP22) and we'll tell you which it is — with the price agreed in writing before any work.

Signs you need ridge and hip repairs
- Drips near the centre or top of the lantern
- A cracked or faded ridge end cap
- Staining along the hip bars inside
What usually causes it?
Movement at the junction
Several bars meet at one point and each moves slightly with temperature; the seals at the ridge take the strain.
Poor original sealing
Ridge details are fiddly. If the original sealing was rushed, it's often the first place to leak.
Covering Tredegar and nearby
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.
We cover Tredegar as part of Gwent, about 17 miles from Newport, Gwent.
Neighbouring places we cover include Ebbw Vale (2 miles), Merthyr Tydfil (6 miles), Blackwood (7 miles).
What should you expect to pay in Tredegar?
Typical range: £195–£445 ex VAT, which is £234–£534 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?
Straightforward repairs — resealing, gaskets, cappings, eaves and like-for-like parts — don't normally need building regulations approval in Wales. Replacing the whole lantern or enlarging the opening is different and falls under the Building Regulations 2010 (as applied in Wales); we confirm in writing which route applies before any replacement. 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.
Ridge and hip repairs in Tredegar: questions
Do you cover Tredegar?
Yes. We cover Tredegar, including the NP22 postcode area, as part of Gwent. 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 Tredegar do you cover?
As well as Tredegar, we cover nearby Ebbw Vale, Merthyr Tydfil, Blackwood, Aberdare and the rest of Gwent.
What does a ridge repair cost?
Usually £195–£445 ex VAT for a standard lantern, confirmed in writing before work starts.
My ridge cap is a different colour from the frame — does that matter?
Faded or chalky caps are a sign of UV damage. Colour alone isn't a leak, but brittle caps crack, so we check them.
Other lantern repairs in Tredegar
- Glazing bar and capping repairs in Tredegar
- Upstand and kerb repairs in Tredegar
- Flat roof junction and flashing repairs in Tredegar
- Roof lantern respraying in Tredegar
- Leak investigation and inspection in Tredegar
- Roof lantern replacement in Tredegar
Ridge and hip repairs near Tredegar
More about ridge and hip repairs · All roof lantern repairs in Tredegar