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Condensation in 9" solid block shed

  • 14-01-2016 11:47am
    #1
    geoweb2k14
    Registered Users, Registered Users 2 Posts: 70 ✭✭


    Hi guys and forgive me if this post is in the wrong section. I have a fierce problem with dampness/condensation in my shed. Not only that but I also have water coming in under the bottom block(between floor and block, through the mortar basically) when it rains. The shed has a layer of felt on the roof with galvanise sheets over it. The condensation issue I can probably solve by removing my oil burner to outside as its an outside burner anyway and drilling a few air holes in the walls as there are no vents hence little or no air. My real problem is how to sort out the floor issue. Could I just pour another floor of about 2-3 inches over the existing one so it covers over the mortar joint between floor and first block by 2-3 inches? Any help welcome as I have a swimming pool in my shed every time it rains :mad:. Thanks in advance.


Comments

  • #2
    jack of all
    Registered Users, Registered Users 2 Posts: 2,376 ✭✭✭jack of all


    Are you saying that the finished floor level is level with the external ground level? If so this is certainly a fault that should be remedied, floor level should be ideally 150mm above external ground level, although 100mm would be adequate for a shed. Best solution would be to pour a new floating (unbonded) screed on 1200 gauge DPM over existing floor. Screed thickness should be a minimum of 75mm although 100mm would be preferable as thin screeds would be inclined to crack, curl or lift when unbonded.


  • #3
    geoweb2k14
    Registered Users, Registered Users 2 Posts: 70 ✭✭geoweb2k14


    jack of all wrote: »
    Are you saying that the finished floor level is level with the external ground level? If so this is certainly a fault that should be remedied, floor level should be ideally 150mm above external ground level, although 100mm would be adequate for a shed. Best solution would be to pour a new floating (unbonded) screed on 1200 gauge DPM over existing floor. Screed thickness should be a minimum of 75mm although 100mm would be preferable as thin screeds would be inclined to crack, curl or lift when unbonded.

    Yes thats exactly it. We poured a floorand foundation as one big slab and the built straight onto it so floor is the slab basically. When you say unbonded what exactly do yo mean? Thanks for your help..


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