FD30 vs FD60: what's actually different
FD30 doors are typically 44mm thick and resist fire for 30 minutes — the standard for flat entrance doors, HMO bedroom doors and most common-area doors in low-rise residential. FD60 doors are usually 54mm thick and hold for 60 minutes — required for higher-risk locations, plant rooms, basements and certain commercial premises. The thickness, core (solid timber, particleboard, mineral) and edge bandings all change. We match the door to the risk and the existing frame, and we never up-spec to sell — FD30 is correct for most domestic uses.

