Rooflight glass replacement across Cardiff & the Vale

Rooflight glass replacement in Cardiff & the Vale

A good share of rooflight glass replacement in Cardiff & the Vale is replacement work. Older units go brittle or discoloured, sealed glass mists, and seals give up after years of sun and frost. Swapping the unit is often possible on the existing kerb, provided that kerb is sound, level and tall enough above the finished roof. Where it is not, we rebuild it. We cover the whole of Cardiff & the Vale, across 13 postcode districts, with fitters travelling to each address.

Guide prices in Cardiff & the Vale

Small sealed unit

£445 – £795including VAT at 20%

Misted or cracked unit up to about 1 m² measured, made and refitted

Medium sealed unit

£795 – £1,295including VAT at 20%

Units up to about 2 m², or toughened and laminated

Large or specialist

£1,295 – £2,395including VAT at 20%

Triple glazed, solar-control or heavy units needing lifting gear

Guide ranges. The first visit is charged and priced before booking; any new glass is priced in writing before work starts. Scaffold, access towers or a crane are priced separately if the job needs them, and building control fees, where a job needs them, are shown as their own line.

Towns we list in Cardiff & the Vale

Fitting across Cardiff & the Vale means planning routes, access and lifting as well as the roof itself. Narrow lanes, shared driveways and town-centre parking restrictions all affect how a large unit is delivered and raised to roof level. We ask about these early so the quote reflects them. That approach is the same everywhere we work in Wales, from single domestic jobs to multi-unit commercial sites.

What we do on the day

Frame rebate cleaned and checked for damage, corrosion or failed seals
Sealed unit ordered to match or improve on the original glass
New unit set on packers, then beaded, capped or bonded as designed
Matching the glass make-up — We identify the existing glass so the replacement performs at least as well.
Can the glass come out? — We check whether your rooflight has removable glass or a bonded unit before booking a fitting visit.

Rules that apply in Wales

Wales sets energy limits of 2.2 W/m²K for rooflights and 1.4 W/m²K for roof windows, and new rooflight openings generally need building regulations approval. Replacement units are controlled fittings; we are not registered with a competent person scheme, so ours are covered by a building notice to the council. Planning permission is needed for rooflights in conservation areas, National Parks, AONBs and World Heritage Sites. We check which applies and include the fee in your quote.

Common questions in Cardiff & the Vale

Is the measuring visit charged?

Yes. The first visit measures the existing glass and checks the frame, and it is charged. We confirm that price before you book. The fitting of the new glass is then priced in writing, so you see the full cost before anything is ordered.

Is new glass or a new rooflight better value?

If the frame, gaskets and drainage are sound, new glass is usually the cheaper fix. If the frame is cracked, distorted or leaking at the kerb, a full replacement is better value. After the measuring visit we price both so you can compare.

Can I upgrade the glass while it is being replaced?

Usually. Solar-control, self-cleaning, toughened or laminated glass can be specified as long as the frame can take the thickness and weight. We check that on the measuring visit and price the options side by side.