Fire Doors for Offices: Fit-Out Compliance and Ongoing Checks

The office door map

• Stair core doors (base build): the protected escape spine — landlord territory typically, FD30S with severe-duty closers, the priority doors every triage names
• Compartment line doors: between tenancies/floors per the building's strategy — demarcation documents say whose (get them — the multi-tenant counsel from our office guides)
• Demise/suite entrance doors: tenant fit-out spec meeting building strategy — where Cat B projects breed compliance debt
• Internal fit-out doors: meeting rooms/cellular offices on escape routes take ratings per strategy; glass-partition ecosystems integrate rated glazed doorsets (the glazed guide's office tier)
• Plant/riser/comms doors: keep-locked logic, steel-leaning per duty (the materials table)
• Circulation hold-opens: the wedge-prevention engineering offices need most — alarm-released devices on the doors everyone props (kitchen points, print corridors — the hold-open menu deployed)

Fit-outs: where office door compliance is decided

The Cat B project pattern that fills our remedial diary: designer specifies glazed everything, contractor value-engineers doorsets to leaves-and-bits (the doorsets fork taken wrong), hold-opens get omitted then wedges appear week one, and the building's fire strategy meets the fit-out at practical completion — adversarially. The prevention sequence: strategy review at design (which lines rate, which doors carry what — landlord approval processes exist for this), certified specifications into contracts (doorset schedules with scheme certifications named — the procurement language from the cost and manufacturer guides), installer scheme requirements flowing to subcontractors (the FIRAS expectations), and commissioning evidence at handover (certificates, gap records, the golden-thread pack — tenant files inheriting properly). Offices buying fit-outs: door lines deserve the scrutiny M&E gets; they're cheaper to specify than to remediate, by roughly the ratio our invoices document.

The operating rhythm and demarcation hygiene

Steady-state office practice: annual professional surveys (the survey product at office scale — modest door counts, quick rounds), monthly-ish facilities walk-rounds (the five-step lite on cores and circulation — the small business checklist's door lines), drill-coupled exit checks (panic hardware pushed per the exits guide), and hold-open device proving within alarm tests (the cause-and-effect habit touching doors). Demarcation hygiene preventing the classic gaps: documented door ownership splits (landlord cores/tenant demise — service charge and lease schedules reconciled to an actual door list), works notifications both ways (tenant alterations touching rated doors trigger approval; landlord programmes touching demise access coordinate), and shared-building survey economics (whole-building door surveys split per demarcation beat per-tenant fragmentary efforts — the multi-tenant bundling we broker). Costs office-scale: surveys £150–£400 typical suites; remedial sweeps £400–£1,500; fit-out door packages per the cost guide with glazed premiums. One rhythm, documented, survives tenancy churn — which is the office estate's only constant.