Getting fire door frames right in Isleworth
Our fire door frames service covers Isleworth and the wider Greater London area. Every job starts with a survey of the openings, so the quote reflects your actual doors rather than a guess.
Around Isleworth, mixed-use office buildings, schools and clinics all depend on fire doors that close, latch and seal. We survey each opening and tell you plainly which doors need work and which don't.
In older buildings the frame can be the weak point even where the leaf is sound, so we check it on every Isleworth survey. Frame-to-wall gaps on Isleworth jobs are sealed with materials supported by the test evidence, as BS 8214:2026 sets out.
Frames on their own
Where a leaf is sound but the frame is not, a new compatible frame can sometimes be fitted to the existing leaf, provided the combination is supported by the leaf's certification. More often, a frame replacement is part of a doorset installation.
As standard, the work covers:
- Photographs of fixing and sealing before covering
- Hardwood or certified frames to suit the door
- Architraves and making good
- Assessment of frame condition and compatibility
Which fire door rules apply in Isleworth?
Fire doors in Isleworth fall under English rules. New and replacement doors are covered by the Building Regulations 2010 and Approved Document B. In workplaces and the common parts of blocks, the Regulatory Reform (Fire Safety) Order 2005, as clarified by the Fire Safety Act 2021, puts the duty on the responsible person to keep fire doors suitable and maintained. Enforcement of fire safety law in Isleworth sits with the London Fire Brigade.
For residential buildings in Isleworth above 11 metres, regulation 10 of the Fire Safety (England) Regulations 2022 adds checks: communal fire doors at least every three months and best-endeavours checks of flat entrance doors at least every twelve months. Higher-risk buildings of at least 18 metres or seven storeys also come under the Building Safety Act 2022, where works may need approval from the Building Safety Regulator.
Buildings and duty holders in Isleworth
Landlords, managing agents, facilities teams and homeowners in Isleworth can all commission fire door frames from us. The usual settings are schools and offices, though single doors for converted houses are just as welcome.
The steps on a Isleworth installation
- Remove architraves and inspect frame fixing
- Decide repair, re-fix or replace
- Prepare the opening and fit the frame
- Pack and fix at specified centres
- Seal the frame-to-wall gap
- Photograph, fit architraves and make good
Budgeting for fire door frames in Isleworth
Budget around £250–£600 per frame replaced, fixed and sealed, ex VAT for fire door frames. Our guide prices are the same in Isleworth as elsewhere; what changes the cost is the doors themselves. Use our guide-price tool for a quick estimate.
Around Isleworth
Neighbouring towns such as Hounslow, Heston, Richmond and Southall are covered too, so clients with several buildings can use one installer and one evidence format.
Questions
Do you cover TW7 and nearby postcodes?
Yes. We cover Isleworth including TW7, and nearby towns such as Hounslow and Heston. The survey and written quote are free.
Can you work from an existing inspection report for my Isleworth building?
Yes. Send it over and we can often price straight from it, then confirm on site. We report back against the same door references so you can close actions off.
Can I use expanding foam around a fire door frame?
Only a fire-rated foam with evidence for that use and gap size. Ordinary expanding foam is not suitable.
What is the frame-to-wall gap?
It is the space between the door frame and the surrounding wall, normally hidden by the architrave. If it is not filled with a suitable fire-resisting material, fire and smoke can pass around the door.

