If I do not need a hearth, I will install my gas fire. I'm looking at the installation instructions for an older Potterton gas fire which covers models Allura, Brava Charm and Decor. I believe these instructions are made in light of The Gas Safety (Installation and Use) Regulations 1994 (As Amended). I wish to install the fire wall mounted. At 2.7 it says " 2.7 Wall Mounting If the fire is to be wall mounted over a combustable hearth or floor, the bottom of the fire casing MUST be at least 100mm above the level of the hearth or floor covering. " Now, unless things have changed in this area, I believe that I can lay carpet below the fire, as long as the fire casing is 100mm or more above the carpet. And that this is within current regulations. And that I DO NOT need a non-combustible hearth. Can anyone please confirm this? Thanks. P.S. I am designing the brickwork, I will have a gas-qualified person fit the fire.