How we approach conservation rooflights in Castlereagh
Thinking about conservation rooflights in Castlereagh? The short answer: slim, low-profile steel-look rooflights for period and listed roofs. The longer answer depends on your roof, which is why we survey before we price.
Wind and rain off the Atlantic make upstand and flashing details important on Northern Irish roofs. Typical uses for conservation rooflights include period, listed and conservation-area roofs.
Jobs in Castlereagh are planned around access: whether the roof can be reached from the garden, whether a hoist or crane is needed, and where we can park. We check this when we measure.
Choices for your Castlereagh project
- Flashings for slate or plain tile
- Blinds
- Steel or aluminium frames
- Central vertical glazing bar
- Toughened or laminated double glazing
- Often preferred by conservation officers
- Double glazed behind a period look
Before you order: points to check
- Projection above the roof line is limited — usually as flush as possible
- Lead or matching flashings may be required
Do you need permission in Castlereagh?
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.
Northern Ireland's energy rules assess rooflight U-values in the vertical position — unlike England and Wales — and expect 1.6 W/m²K or Band C for replacements. Extensions follow a 25% glazing allowance in Technical Booklet F1.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Castlereagh
Prices below are shown including and excluding VAT. In Castlereagh, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or electric conservation rooflight | £2,755 – £4,195 | £2,295 – £3,495 |
| Standard conservation rooflight Typical | £2,035 – £2,755 | £1,695 – £2,295 |
| Small conservation rooflight | £1,795 – £2,155 | £1,495 – £1,795 |
What happens next
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Castlereagh address.
- Measure and check. A surveyor visits Castlereagh, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Nearby towns
More we do in Castlereagh
Conservation rooflights in Castlereagh: questions
Are conservation rooflights double glazed?
Most modern ones are, with slim units behind the traditional frame.
Can they open?
Yes, most are top-hung or side-hung for ventilation and cleaning, with manual or electric operation.
Do they suit slate roofs?
Yes — flashings are made for slates and for plain tiles.
Do I need to be at home for the survey in Castlereagh?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Is the survey in Castlereagh free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
