UK Fire Hearth Rules

I’m putting in a lounge fire, in the form of a contained log burner.

These are the rules I’ve found regarding a hearth.


  • Stricter rules if a stove into a fireplace recess Vs a freestanding stove.
  • Freestanding stove rules (NOT in a recess):
    • assumes stove  is independently certified not to heat the hearth underneath it to more than 100 degrees centigrade;
    • 12mm thick non-combustible superimposed hearth onto the floor
    • Minimum size 840mm x 840mm
    • Minimum 150mm each side and behind the stove
    • Minimum 225mm in front of the door. Best practice is 300mm.

If it’s a stove going into a fireplace recess, also look at