Tuesday 30th September 2025
FD30 internal fire doors provide essential protection by resisting fire for a minimum of 30 minutes. These fire rated internal doors form a critical part of building safety systems, containing fire spread and protecting escape routes during emergencies.
Essential FD30 Internal Fire Door Requirements
FD30 internal fire doors must meet strict specifications to achieve their 30-minute fire resistance rating. The door construction requires correct thickness, typically 44mm minimum, with appropriate core materials designed to withstand high temperatures.
Certified hinges play a vital role in door performance. Each internal fire door needs a minimum of three fire rated hinges to maintain structural integrity during fire conditions. These hinges must match the door’s fire rating to ensure complete system performance.
Compatible intumescent strips expand when exposed to heat, sealing gaps around the door frame. These strips prevent smoke and flame penetration, maintaining the fire compartment’s effectiveness throughout the 30-minute period.
Installation Standards for Fire Rated Internal Doors
Proper gap tolerances ensure optimal performance of FD30 internal fire doors. The door requires 2-4mm gaps around all edges to allow for thermal expansion while maintaining fire resistance. Larger gaps compromise the door’s ability to contain fire and smoke.
Self-closing mechanisms ensure the fire door automatically closes after use. This feature maintains fire compartments even when occupants forget to close the door manually. The closing mechanism must provide sufficient force to overcome normal air pressure and friction.
Fire rated glazing panels, when present, must match the door’s 30-minute rating. The glazing system includes the glass, beading, and fixing method – all certified to withstand fire conditions for the full rating period.
Commercial Fire Door Applications
Commercial fire doors serve multiple building types including offices, schools, hospitals and retail premises. These internal fire doors protect stairwells, corridors and room entrances, creating safe escape routes during emergencies.
FD30 doors suit areas requiring 30-minute fire protection, typically separating different occupancy areas or protecting escape routes. Building regulations and fire risk assessments determine the specific requirements for each location.
BWF Certifire Approval and Certification
All Safelincs FD30 doors carry third party certification approval, meeting the highest industry standards. This certification guarantees the door has undergone rigorous testing to prove its 30-minute fire resistance capability.
Certification marking on each door provides traceability and compliance evidence. Building inspectors and fire safety officials recognise this marking as proof of the door’s tested performance and regulatory compliance.
Professional Fire Door Services
Safelincs offers complete fire door services including supply, installation and inspection throughout mainland UK. Our certified team ensures correct installation in compatible frames, maintaining the door’s fire rating and building compliance.
Our fire door inspection service identifies potential issues with existing installations. Type 1, 2 and 3 inspections suit different building situations, from new installations to maintenance checks on established fire door systems.
Made to measure fire doors ensure perfect fit and optimal performance. Our manufacturing partner produces doors to exact specifications, eliminating installation problems and maintaining certification requirements.
Contact our fire door specialists on 0800 433 4289 or email firedoors@safelincs.co.uk for expert advice on FD30 internal fire door requirements and installation services.
All information correct at time of posting.
