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Constructional Hearth Guidance

Discussion in 'Building' started by CharlotteKA, 11 May 2021.

  1. CharlotteKA


    11 May 2021
    Thanks Received:
    United Kingdom
    Hello everyone,

    I have spent the last few days reading lots of posts on constructional hearths for solid fuel stoves but very little reference to gas fires.

    The background: I have bought an 1890's victorian semi which was unoccupied for 16 months and previously rented out. The property suffered a lot of neglect and was damp due to ineffective rain water goods, poor brickwork and failed flashings. This is all rectified so now work begins inside to remove the floordboards and joists. In doing so, I found the concrete hearth of the ground floor living room to be cracked, the first course of bricks loose and lots of damp in this area (possibly made its way down from the failed flashings around the chimney stacks). So I have removed the concrete and subsequent damp rubble and now I'm left with a recess.

    I've had new plates with DPM and new joists installed, floorboards will eventually be P5. But what do I do about this hearth, I plan to have a stove effect gas fire here. Do I need to adhere to the same hearth rules as solid fuels?

    The old flue will be removed and bricked up, a lower concrete lintel will be installed and bricked above this to reinstate a smaller opening. The finished flooring will be laminate of some sort and a small tiled decorative hearth.

    Lots of pictures of the progress attached. Since the last picture I have removed the loose rubble at the top and my gloves/tools of course :D

    Attached Files:

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  3. oldbutnotdead


    11 Jan 2013
    Thanks Received:
    United Kingdom
    Have you picked the exact gas fire you want yet- if so, have a read of the installation instructions, it should specify there what type of surface is suitable (and air supply and flue). You can of course get gas fires that don't require a flue but you still need good ventilation (lots of water vapour released when you burn gas as well as CO2).
    Constructional hearth probably not required but it may be the most cost-effective setup...
  4. DIYnot Local

    DIYnot Local

    3 Sep 2019
    United Kingdom

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