Fitting jobs in Derry/Londonderry
Fitting & replacement
- Fit-only rooflight installation · from £445
- Rooflight replacement · from £1,095
- New rooflight in an existing roof · from £2,295
- Rooflight upstands & kerbs · from £245
- Rooflight glass replacement · from £445
- Rooflight leak repairs · from £145
Flat roof rooflights
- Flat rooflight installation · from £995
- Frameless rooflight installation · from £1,445
- Electric opening rooflight installation · from £2,645
- Walk-on rooflight installation · from £3,345
- Sliding rooflight installation · from £7,795
- Roof access hatch installation · from £1,795
- Roof lantern installation · from £3,095
Pitched roofs & lofts
- Pitched roof window installation · from £845
- Loft conversion roof windows · from £1,795
- Conservation rooflight installation · from £1,145
- Sun tunnel installation · from £595
Commercial & trade
- Commercial rooflight installation · from £1,095
- Dome rooflight replacement · from £395
- Smoke vent rooflight installation · from £3,595
- Trade rooflight fitting · from £295 + VAT
Specialist fitting or a general builder
Large glass units are heavy, awkward and expensive to replace if dropped. Getting one onto a roof may need a hoist, a crane or a planned lift from a scaffold. Fitting it means setting it level on packers, without twisting the frame, while the weather holds. A general builder may do this a few times a year. A rooflight fitting team plans the lift, the equipment and the sequence before the day. That lowers the risk to the unit and to the people lifting it.
Covering Derry/Londonderry and surrounding areas
From the centre of Derry/Londonderry out to its edges, postcode districts BT48, BT47 and BT49 are all standard cover. The same applies to neighbouring Coleraine, about 27 miles off, and Omagh, around 27 miles away. If you are further out, towards Dungannon or beyond, send the postcode and we will confirm before quoting.
Do you need permission in Derry/Londonderry?
For a home in Northern Ireland, check planning first: rooflights are excluded from permitted development in conservation areas and within the curtilage of listed buildings, and elsewhere must keep 0.5 m clear of the ridge, eaves and verges. Then building control: a new opening alters the roof structure, so expect a building control application and confirm with your council, and the glazing must achieve WER Band C or 1.6 W/m²K. We check both for your address before quoting.
Questions about rooflight fitting in Derry/Londonderry
How does payment work?
Payment terms are set out on your written quote before you accept it. Depending on the job, that may mean a deposit, stage payments for larger work, or payment on completion. The contract is with S&K Property Investments and Improvement Ltd, part of the S&K Group. Nothing is added without your agreement: if something unexpected comes up, we discuss it and agree any change before carrying on.
Do you make good inside after fitting?
Yes, where the quote includes it. Internal finishing usually means lining the reveal with plasterboard, taping or skimming, and fitting trim where it meets the ceiling. Some people prefer their own plasterer or decorator to finish off, which is fine. The written quote spells out exactly where our work stops, so nobody is left guessing about who does what once the unit is in.
What if my roof opening is the wrong size for the rooflight?
We find out before the fitting day, not on it. If the opening is slightly out, it can usually be adjusted by trimming or by packing out the upstand. If it is a long way off, the choice is between altering the opening and changing the unit. Bear in mind that rooflights are often sold by builder's opening size rather than external size, so check which one your measurement refers to.
Do you cover Derry/Londonderry?
Yes. Fitters travel to addresses in Derry/Londonderry and the surrounding districts, including BT48. We do not run an office there; the survey and the fitting happen at your property. A few island and remote postcodes are covered by arrangement; if yours is one, we confirm travel and dates before quoting.

