Derry/Londonderry guide prices
Small frameless
Up to about 1000 × 1000 mm, hidden frame inside the upstand
Medium frameless
Up to about 1000 × 2000 mm
Large frameless
Large single panes, lifting gear on the day
Guide ranges for supply & fit. Your price is fixed in a written quote after we have seen photos or surveyed. Scaffold, access towers or a crane are priced separately if the job needs them, and building control fees, where a job needs them, are shown as their own line.
Coverage in and around Derry/Londonderry
Fitters travel to the job, so the address is what counts. In Derry/Londonderry that means postcode districts BT48, BT47 and BT49, and the same teams can just as easily take on work in Coleraine, about 27 miles away, or Omagh at roughly 27 miles. Survey and fitting dates are offered according to fitter availability, and travel is built into the quote rather than added later.
Already bought your unit?
Your unit or ours, the fitting standard is the same. For supply and fit we choose a frameless rooflight to suit the roof and price it with the installation. For fit-only we work with what you have, after confirming it arrived undamaged, that it matches the builder's opening, and that the upstand will sit at the height the maker asks for. Report any transit damage to the seller, as the product cover is theirs and the maker's. Our written guarantee applies to the fitting itself.
Included in the work
- Inside reveal formed so plaster or trim meets the glass cleanly
- Kerb squared across the diagonals before the glass is ordered or fitted
- Fall set in the upstand so rain clears the oversailing glass edge
- Tolerance on the upstand — We build frameless kerbs to the maker's tolerance rather than to normal carpentry accuracy.
- Drainage at the overhang — We check how water leaves the glass where it oversails the kerb.
Fitting your frameless rooflight, step by step
Fitting days start with a look at the sky. If rain is due, the order of work changes so the roof is never left open to it. A typical day for a frameless rooflight runs like this: set up access, protect the room, open up the roof or prepare the existing kerb or frame, check sizes, fix, seal, then finish inside. On jobs that take more than a day, the opening is weather-sealed overnight. The last hour goes on tidying, waste removal and a walk-round with you.
Regulations for Derry/Londonderry properties
Northern Ireland has its own rules. Permitted development for rooflights on a house requires the unit to sit below the highest part of the roof, project no more than 15 cm where the slope faces a road, and stay at least half a metre from the ridge, eaves, party wall and verge. It doesn't apply in conservation areas or within the grounds of a listed building. For building control, structural roof alterations need an application, and rooflights must meet WER Band C or 1.6 W/m²K.
Getting a price from photos
Each detail you send takes a question off our list. Photos inside and out show the opening and the ceiling. Rough measurements tell us the unit size. The roof covering tells us how it will be sealed in. Access notes tell us whether a tower or scaffold is needed. A product link, if you have one, lets us check it against the opening. Your postcode, BT48 or nearby, confirms travel.
Common questions in Derry/Londonderry
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.
Can you replace an old dome without redoing the whole roof?
Usually, yes. If the existing kerb is sound, level and tall enough, a new unit can often sit on it with a fresh seal to the roof covering. If the kerb is rotten or too low, we rebuild it and patch the covering around it rather than stripping the whole roof. This is checked at the survey and included in the written quote, so you know the full scope first.
What upstand height and roof pitch does frameless rooflight fitting need?
It depends on the product. Manufacturers usually specify a minimum upstand height above the finished roof surface, and a minimum pitch on the glass so rain runs off. We follow the maker's figures for your unit rather than a rule of thumb. If your existing kerb or roof falls short, we explain the options, such as raising the upstand or choosing a unit with built-in pitch.
Get in touch with the details of your Derry/Londonderry property and we will explain what the job involves and what it costs.
