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Wood floor.

  • 25-01-2013 6:01pm
    #1
    me4many
    Registered Users, Registered Users 2 Posts: 294 ✭✭


    I am thinking of putting a wooden floor down over an old concrete floor. The floor had lino on it but when I took it up the concrete had condensation on it. ( maybe because moisture was trapped but I dont know.) Its a room in the middle of the house..ground floor.

    Can the concrete be treated with some sort of sealer or are there other methods used today to deal with this kind of situation.
    As said earlier its an old building.

    Any ideas please.
    Thanks


Comments

  • #2
    3ndahalfof6
    Registered Users, Registered Users 2 Posts: 5,184 ✭✭✭3ndahalfof6


    Lino can show condensation when lifted, leaving it for a few days to see will it dry off might show it was the lino ( that created the condensation), if it does not dry up there might be some other problem,

    if it does dry up, you could batten the floor, rising your new wooden floor off the concrete, but this would depend on how it would effect doors opening onto the new floor,

    PVA the concrete with a strong solution would seal it, as long as it dried out, what type of wooden floor are you putting down, click boards or a solid timber floor,

    if it is a click floor and the concrete dried out ok and you PVA the concrete, the click floor with underlay should work out fine, it just depends on if the concrete dries out, best of luck with it,

    also if the concrete is not level, using self level compond would be a good idea.


  • #3
    North West
    Registered Users, Registered Users 2 Posts: 439 ✭✭North West


    Hi
    First of all you will need to take up the lino and leave floor for about a week to dry. ( lino will always sweat on concrete ) You will then have to do a test for moisture in the concrete floor. You can use a concrete moisture meter or get about 8 pieces of visqueen 12" square. Tape them down on floor in various areas. Leave for a week and check is there any condensation on visqeen. See how dense it is. if it is still very wet there is a lot of moisture in the concrete slab. A concrete floor has be down to 5% or less before you can install any floor on it. Moisture is timbers enemy. However there are ways of controlling the moisture when you find out exactly what moisure content the floor is.Would there be a moisture barrier under old concrete floor?? let me know how you get on.
    NW


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