Skylight replacement in Belfast: what is involved?
For Belfast homes and buildings we offer skylight replacement: replacing tired domes and failed glass with a modern rooflight. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Conservation areas and listed buildings in Northern Ireland are excluded from householder permitted development, so we check before quoting. Think of skylight replacement for older extensions due a modern rooflight.
Belfast is the main town we list in County Antrim; we also cover nearby Castlereagh and Newtownabbey.
Options we can specify in Belfast
- Upstand rebuild and insulation
- Misted glass unit replacement only
- Fixed to electric opening
- Dome to flat glass upgrade
- Roof window replacement in pitched roofs
- Cures most chronic leaks
- Option to add opening and rain sensor
Before you order: points to check
- A replacement is a chance to meet current thermal standards
- Old glass and domes are disposed of responsibly
Consents for skylight replacement 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. Listed buildings also need listed building consent from the council.
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.
Our planning guide covers each nation in more detail.
What does skylight replacement cost in Belfast?
Prices below are shown including and excluding VAT. In Belfast, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Replacement with upstand rebuild and opening unit | £2,995 – £4,795 | £2,495 – £3,995 |
| Dome to flat glass upgrade Typical | £1,915 – £2,995 | £1,595 – £2,495 |
| Like-for-like glass rooflight | £1,555 – £2,155 | £1,295 – £1,795 |
What happens next
- Tell us what you have. Send the BT1 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Belfast, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Skylight replacement near Belfast
Related work in Belfast
Questions about skylight replacement in Belfast
Can I go bigger when replacing?
Possibly. Enlarging the opening means trimming joists, so we check the structure first.
What do you do with the old unit?
We remove it from site and recycle what can be recycled.
Can you replace only the misted glass?
Sometimes, if the frame is sound and the maker supplies replacement units. Often a complete new rooflight costs little more and performs better.
Is the survey in Belfast free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Will I need planning permission in Belfast?
Most rooflights on houses in Northern Ireland are permitted development under Class B, but not in a conservation area or on a listed building's curtilage.
