Guide prices in Hertfordshire
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 Hertfordshire
We work right across England, and Hertfordshire is covered on the same footing as everywhere else. There is no showroom or depot to visit. The survey happens at your property or, for fit-only jobs, from your photos. If your address is remote or reached by ferry, tell us early and we will confirm what arrangement is needed before quoting.
- Smoke vents (AOV) in Berkhamsted
- Smoke vents (AOV) in Bishops Stortford
- Smoke vents (AOV) in Borehamwood
- Smoke vents (AOV) in Bushey
- Smoke vents (AOV) in Cheshunt
- Smoke vents (AOV) in Harpenden
- Smoke vents (AOV) in Hatfield
- Smoke vents (AOV) in Hemel Hempstead
- Smoke vents (AOV) in Hertford
- Smoke vents (AOV) in Hitchin
- Smoke vents (AOV) in Hoddesdon
- Smoke vents (AOV) in Letchworth Garden City
- Smoke vents (AOV) in Potters Bar
- Smoke vents (AOV) in Rickmansworth
- Smoke vents (AOV) in St Albans
- Smoke vents (AOV) in Stevenage
- Smoke vents (AOV) in Ware
- Smoke vents (AOV) in Watford
- Smoke vents (AOV) in Welwyn Garden City
What's included
- New vent fitted, sealed and weathered into the roof
- Old vent removed with the stairwell kept protected below
- Controls, detection and wiring handled by the smoke-control specialist
- Certified as a system — We only fit smoke vents that are certified to BS EN 12101-2.
- Controls and backup power — We confirm the controls, detection and backup power are being dealt with by a specialist.
Rules that apply in England
A replacement smoke vent in England has to keep the free area and performance the building's fire strategy relies on, using a vent certified to BS EN 12101-2 with its actuator and backup power. We fit the vent and do the roof work; a smoke-control specialist connects and commissions the controls, and we confirm whether building control needs to be notified.
Common questions in Hertfordshire
Do you cover Hertfordshire?
Yes. Fitters travel to addresses in Hertfordshire and the surrounding districts, including AL, CM, EN, HP, SG and WD postcodes. 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.
What is included in the price?
The written quote lists it line by line. Typically that covers fitting labour, fixings, sealants, membrane or flashing materials, any upstand work, internal finishing if agreed, and taking away the waste. For supply and fit, the unit itself is included too. Scaffold, lifting gear and any third-party fees, where needed, are shown separately so you can see what each part of the job costs.
Can you fit a rooflight in winter or when it is raining?
Yes, within limits. Cold is less of a problem than wet, because membranes, primers and sealants need a dry surface to bond. We plan fitting days around the forecast and may move a date if heavy rain is due. If the roof has to be opened up, it is not left overnight without a temporary weather seal, so the room below stays dry while the work is finished.

