Skylight replacement in Lisburn: what is involved?
For Lisburn 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.
Many Northern Irish homes have later flat-roofed kitchen extensions where an old dome can be swapped for glass. In Lisburn, as anywhere, skylight replacement is the usual choice for older extensions due a modern rooflight.
Jobs in Lisburn 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.
Specification options
- Fixed to electric opening
- Roof window replacement in pitched roofs
- Dome to flat glass upgrade
- Misted glass unit replacement only
- Like-for-like size replacement
- Better thermal performance
- Usually done in a day
What to check first
- Upstand and roof condition decide the scope
- A replacement is a chance to meet current thermal standards
Consents for skylight replacement in Lisburn
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. Listed buildings also need listed building consent from the council.
For homes in Northern Ireland, Technical Booklet F1 sets 1.6 W/m²K (or WER Band C) for replacement glazing including rooflights. New dwellings must average 1.40 W/m²K across windows, roof windows and rooflights.
Read the planning permission guide before you commit to a design.
Skylight replacement prices in Lisburn
Guide prices for skylight replacement in Lisburn are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Lisburn address.
- Measure and check. A surveyor visits Lisburn, 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
Related work in Lisburn
Skylight replacement in Lisburn: questions
What do you do with the old unit?
We remove it from site and recycle what can be recycled.
Do I need building regulations approval to replace a rooflight?
Replacements in existing homes generally need to meet current thermal standards and may need notification or approval. We advise on the route for your job.
Will it mess up my ceiling?
We protect the room and make good the reveal. Minor decoration may be needed afterwards.
Can you work alongside my builder in Lisburn?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Is the survey in Lisburn free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
