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Suspended timber floor vs solid concrete

  • 22-07-2024 7:17pm
    #1
    Pentax
    Registered Users, Registered Users 2 Posts: 71 ✭✭


    Hi All,

    I have a 1970's house in Dublin and the ground floor is a timber suspended floor. I am considering removing the timber floors and intalling an insulated concete floor, The area is approx 45msquared. The floor void is approx 2 4inch blocks height (430mm).

    Has anyone else performed this exercise and what was your experience. Did you think the benefit outweighed the cost.

    The benefits for me would be the floor would be insulated, the step into the garden would be reduced and the step to the attached garage would also be reduced.

    Thank you in advance.

    Pentax



Comments

  • #2
    10-10-20
    Registered Users, Registered Users 2 Posts: 8,074 ✭✭✭10-10-20


    Hi, so you're proposing to drop the FFL (finished floor level)? Normally an infilled floor would just return the FFL back to the same level. How's that going to work-out with door heights and thresholds and such?

    Also one of the best returns on your reflooring investment can be achieved if you fit underfloor heating pipes into the screed at the same time, is that a consideration at all? No way would I do this job without fitting them, even if I wasn't planning on installing a heat-pump…



  • #3
    Pentax
    Registered Users, Registered Users 2 Posts: 71 ✭✭Pentax


    https://www.boards.ie/discussion/comment/122413775#Comment_122413775

    Hi,

    The void space under the floor is approx. two blocks plus the floor joist deep, all in all around 500mm. I would imagine I could drop the FFL by about 250mm but I that hasn't been confirmed by anyone.

    Yes the external front door would have to be lowered and also the back door. Floor in the garage is already about 500mm lower than the main house.



  • #4
    Clo-Clo
    Registered Users, Registered Users 2 Posts: 6,808 ✭✭✭Clo-Clo


    I had suspended timber, I got the insulated tin foil, the proper high grade stuff, put it down and then ply on top of it, then wooden floor, you will get similar u value I would expect, not as good but not the huge cost you are talking about



  • #5
    Mellor
    Registered Users, Registered Users 2 Posts: 39,902 ✭✭✭✭Mellor


    https://www.boards.ie/discussion/comment/122414727#Comment_122414727

    I think you are missing his point.

    Lets say you front door, back door and all internal doors are 2050mm doors. When you drop the floor by 250, you now have 2300 door openings. Meaning a gap at the top that needs to be infilled. Or all doors and frames replaced, as the frames are also short of the floor now too.

    Assuming there is a stairs, you'd have to make up the change in FFL too. You' also be raising the height of all the windows above the FFL by 250mm. Light switches, sockets, cupboards, will all be raised. The knock on effect is huge. I's only be doing this as part of a major renovation.



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