What we fit in Belfast
SkylightCompany.uk covers Belfast and the surrounding part of County Antrim, from a single roof window in a loft to a glass link or a warehouse roof.
Conservation areas and listed buildings in Northern Ireland are excluded from householder permitted development, so we check before quoting.
We cover all of Belfast and the BT1 district, and nearby Castlereagh and Newtownabbey.
Flat roof rooflights in Belfast
Lanterns & glass roofs in Belfast
Pitched roofs & lofts in Belfast
Commercial rooflights in Belfast
Upgrades, repairs & fitting in Belfast
Planning and building rules in Northern Ireland
In Northern Ireland, roof alterations come under Class B of the 2015 order: a rooflight facing a road must not project more than 15 cm and must sit at least 0.5 m from the ridge, eaves, verge and party wall. A side-facing window within 15 m of a neighbouring boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
Technical Booklet F1 (2022) asks for replacement windows and rooflights in existing homes to reach WER Band C or a U-value of 1.6 W/m²K, assessed in the vertical position. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
Nearby towns
Skylight questions: Belfast
Can you work alongside my builder in Belfast?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Belfast free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Do you fit skylights and rooflights in Belfast?
Yes. We survey and fit skylights and rooflights in Belfast and across County Antrim. Send your postcode and we will offer a survey date when we reply.
Will I need planning permission in Belfast?
Northern Ireland's householder permitted development allows rooflights within limits — no more than 15 cm projection on road-facing slopes and a 0.5 m margin from ridge, eaves and party walls.
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.
