Skylights and rooflights across South Glamorgan
SkylightCompany.uk covers the whole of South Glamorgan — homes, extensions, schools and commercial roofs — with a free survey for new installations.
Slate roofs, stone cottages and terraced valleys are typical across Wales, and slim rooflights that sit low in the slates suit them best.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere.
Towns in South Glamorgan
Products and services in South Glamorgan
Planning and building rules in Wales
In Wales a rooflight on a house is usually permitted development if it stands no more than 15 cm proud of the roof, except on protected land such as conservation areas and National Parks, where permission is needed. A side-facing rooflight within 10.5 m of the boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
Welsh Building Regulations expect new or replacement rooflights to reach 2.2 W/m²K and roof windows 1.4 W/m²K or a Band B rating. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
Neighbouring areas
Common questions
Do you cover all of South Glamorgan?
Yes. We survey and fit across South Glamorgan, including Cardiff, Barry and Penarth. Remote and island addresses are by arrangement.
Do I need planning permission for a rooflight in South Glamorgan?
Welsh householder permitted development (Class C) allows rooflights that project no more than 15 cm and sit no higher than the existing roof — but not in conservation areas, National Parks, AONBs or World Heritage Sites.
Will a rooflight make my room too hot?
It can on a south-facing roof with clear glass. Solar-control glass, an opening unit and a blind keep the room comfortable.
Do you cover my area?
We survey and fit across England, Wales, Scotland and Northern Ireland. Remote and island addresses are by arrangement — send your postcode and we will confirm.
How quickly can you fit?
Manufacturers typically quote two to four weeks for standard rooflights; bespoke, structural and motorised units take longer. Your quote states the lead time.
