Getting certified fire doorsets right in Derry
Our certified fire doorsets service in Derry is simple: a survey, a fixed quote, certified products and an installation finished to the manufacturer's evidence.
Around Derry, HMOs, family homes after loft conversions and low-rise blocks of flats 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.
Doorsets suit refurbishment programmes in Derry, where several openings can be measured, ordered and fitted in one planned sequence. Pre-hung doorsets keep disruption down in occupied buildings in Derry, with less cutting and fewer return visits.
Why choose a doorset over a door leaf?
A fire door's rating belongs to the assembly that was tested, not to the leaf on its own. When a certified leaf is hung in an old frame with mismatched hinges and seals, nobody can say with confidence how it will perform. A doorset arrives with the frame, gaps and ironmongery already matched, so the installer's job is to fix it correctly into the opening and seal it to the structure.
Doorsets also cut time on site, which matters in occupied buildings: less cutting, less dust and fewer return visits.
Each installation includes:
- Doorset selection to rating, size and use
- Certificate references and photo record per opening
- Frame fixing and frame-to-wall gap sealing
- Pre-hung, pre-machined doorsets where available
The regulations behind fire doors in Derry
Derry is in Northern Ireland, where fire doors are covered by the Building Regulations (Northern Ireland) 2012 and Technical Booklet E on fire safety. Duties in non-domestic premises come from the Fire and Rescue Services (Northern Ireland) Order 2006 and the Fire Safety Regulations (Northern Ireland) 2010.
The English regulation 10 checking regime does not apply here, so the fire risk assessment sets how often doors in Derry are checked. We hand over evidence that supports it.
Buildings and duty holders in Derry
The need for certified fire doorsets usually arises in schools and offices or refurbishment programmes, and sometimes new-build and conversion projects. Each has its own pressures, such as residents at home or a building that must stay open, so we plan the sequence of work in Derry to keep escape routes protected throughout.
The steps on a Derry installation
- Survey and measure every structural opening
- Specify doorsets by rating, size, hand, finish and hardware
- Prepare openings and remove existing doors and linings
- Fix and seal the frames to the structure
- Hang, adjust and test each leaf and closer
- Fit architraves, make good and hand over evidence
What does certified fire doorsets cost in Derry?
Guide pricing for certified fire doorsets: £650–£1,300 for an FD30 doorset and £850–£1,800 for FD60, supplied and fitted, ex VAT. Volume work across several doors in one Derry building usually brings the per-door cost down. Your written quote is fixed once we have surveyed.
Covering Derry and nearby
As well as Derry, we cover neighbouring towns including Coleraine, Omagh and Ballymena. The survey and quote are free.
Questions from Derry
Is Derry within your coverage area?
It is. We cover Derry in County Londonderry and neighbouring towns such as Coleraine. There is no charge for the survey.
Can you work from an existing inspection report for my Derry 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.
Are doorsets more expensive than a leaf?
The product costs more, but the labour is often lower and the result is better evidenced. Where a frame would need replacing anyway, a doorset is usually the better value.
Can a doorset be fitted into an existing opening?
Usually, yes. Doorsets are made to fit the structural opening once the old frame is removed. We measure the opening on the survey so the doorset is made to the right size and the gaps to the wall stay within what the evidence allows.

