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Slight mould on new Dot & Dabbed Wall

Discussion in 'Decorating and Painting' started by Luckyphil, 17 Dec 2019.

  1. Luckyphil

    Luckyphil

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    Location:
    Cheshire
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    Hello all

    1st visit in here , I’m looking for some advice :-

    Unoccupied 2 Bedroom Semi , no central Heating at present
    The Property is undergoing a full refurb , with a recently added single storey Extension , this is where a problem has arisen :-

    Whilst drying out I’ve noted that in one Corner of the Extension there is shadowing almost a damp type stain with a slight growth on the face of the Plaster , this growth wipes off no problem , there is a small similar area of staining under the Steel Lintel area and at the bottom of the Doir reveals , The Wall is Plasterboard dot & dabbed then skimmed , Walls are Brick / Rockwool Wall Slab / Blockwork

    The Extension was built during inclement Weather but was covered up as best as it could be during Construction , there is no new ingress of Water on checking Walls etc

    putting a damp Meter on it shows around 20% on the majority of the Walls but around 26-28% in the problem area

    I’m questioning will this staining / growth go away as the Walls dry out further , when painted is it likely to break through the Paint finish

    is there a primer I can paint the Walls with prior to decoration ?
    Any feedback would be appreciated

    thanks

    Phil
     
  2. KenGMac

    KenGMac

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    Luckyphil, good evening.

    Suggest you take no drastic action just now but.

    When is the property due to be occupied?

    Is there a working Central heating system installed? or is it still work in progress? If the system is working suggest you fire it up on a low setting say @ about 35 / 40 C? this will re-introduce heat slowly so as not to cause any issues with a sudden shock from an un-heated space to a space heated to 20 C.

    Ken.
     
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  4. Luckyphil

    Luckyphil

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    Hi Ken

    it’s still unoccupied at present , there’s back ground Heating kicking in occasionally, the Central Heating is due to go in Mid January & my Step Daughter is purchasing hopefully in March / April , so hopefully things will clear up then ?
    Thanks for your reply

    Phil
     
  5. KenGMac

    KenGMac

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    Luckyphil, good evening, again.

    If possible, introduce and increase heat slowly, that way [hopefully] nothing reacts to being cold one day and a lot warmer the next?

    Ken.
     
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