Skylights and rooflights across Dyfed
SkylightCompany.uk covers the whole of Dyfed — homes, extensions, schools and commercial roofs — with a free survey for new installations.
Welsh planning rules exclude rooflights from permitted development in conservation areas and National Parks, so we check the designation before quoting.
Many Welsh homes have older single-storey rear extensions where a glass rooflight brightens a dark kitchen.
Towns in Dyfed
Products and services in Dyfed
Planning and building rules in Wales
Planning rules in Wales are tighter than in England for rooflights: Class C rights do not apply in conservation areas, National Parks or AONBs, so a rooflight there needs planning permission. 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.
Approved Document L in Wales (2022 edition) sets 2.2 W/m²K for rooflights, measured horizontally, and 1.4 W/m²K or Band B for roof windows in existing homes. Wales also has its own overheating rules (Part O) for new homes, in force since November 2022.
Neighbouring areas
Common questions
Do you cover all of Dyfed?
Yes. We survey and fit across Dyfed, including Llanelli, Ammanford and Aberystwyth. Remote and island addresses are by arrangement.
Do I need planning permission for a rooflight in Dyfed?
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.
Can a skylight be fitted into an existing flat roof?
Yes. We form the opening, trim joists, build an insulated upstand, re-waterproof and make good the ceiling.
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.
Are you accredited?
We do not display trade-body logos unless a membership is held and current. Product certifications belong to the manufacturers and we provide their documents.
