Guide prices in County Londonderry
Vent swap
Like-for-like certified vent and actuator, connected to the existing controls and commissioned by a smoke-control specialist
Vent with new controls
Vent plus new control panel and detection, commissioned by a smoke-control specialist
Multiple vents
Several stairwells or larger systems, priced from a survey
Guide ranges for supply & fit; controls and commissioning by a smoke-control specialist. 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.
Towns we list in County Londonderry
Coverage in County Londonderry works by postcode, not by distance from an office. Give us the full postcode and we will confirm whether it is standard cover, as it is for most of Northern Ireland, or one of the few remote and island areas handled by arrangement. Either way, you get a written quote before any work is booked, with travel included in the price.
Included in the work
- Commissioning and sign-off carried out by the specialist before handover
- Upstand checked, adapted or rebuilt to the vent maker's drawing
- Old vent removed with the stairwell kept protected below
- Fire rules near escape routes — We check the roof around the vent for fire rules that affect it.
- Certified as a system — We only fit smoke vents that are certified to BS EN 12101-2.
Rules that apply in Northern Ireland
In Northern Ireland, smoke vents must be certified products that keep the free area the building's fire strategy requires, with controls connected and commissioned by a smoke-control specialist. The Technical Booklets and building control set the detailed requirement, and we confirm it before quoting.
Common questions in County Londonderry
Will my new smoke vent rooflight leak?
A correctly fitted unit should not. Leaks usually trace back to the detail around the frame: an upstand that is too low, a membrane or flashing that is not dressed properly, sealant applied to a damp surface, or water ponding against the kerb. We fit to the maker's instructions and check each of those points. The fitting carries a written workmanship guarantee, with its terms set out on your quote.
Does a rooflight need building control approval?
In Northern Ireland a new opening alters the roof structure, so expect a building control application; confirm the position with your council, including for replacements. The new rooflight must meet WER Band C or 1.6 W/m²K. We confirm what applies before you commit.
Do you need scaffolding to fit a rooflight?
Not always. Single-storey roofs can often be reached safely with ladders, a tower or edge protection. Higher roofs, steep pitches and large units usually need scaffold or a mobile platform, and heavy glass may need a crane. We assess access from your photos or at the survey, and any scaffold or lifting cost is shown as its own line on the written quote.
