Hairline cracks

Discussion in 'UK DIY' started by Mike Mitchell, Oct 21, 2003.

  1. I painted the walls four months ago, using Homebase/Dulux Emulsion
    (whatever I hadn't used up). I treated several hairline cracks
    beforehand with flexible filler out of the gun (the kind that is
    overpaintable after about an hour). But because the cracks were really
    hairline ones, I just smeared the filler on with a palette knife,
    forcing it into the crack, then wiped over with a damp sponge.

    Now the cracks have reappeared. What can I use to prevent this from
    happening again? Maybe I *should* have used the gun and really forced
    the gunk into the crack. However, they really ARE hairline ones!

    Cheers!

    MM
    Mike Mitchell, Oct 21, 2003
    #1
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  2. Mike Mitchell

    dg Guest

    Use a flexible filler or mastic.

    dg


    "Mike Mitchell" <> wrote in message
    news:eek:...
    > I painted the walls four months ago, using Homebase/Dulux Emulsion
    > (whatever I hadn't used up). I treated several hairline cracks
    > beforehand with flexible filler out of the gun (the kind that is
    > overpaintable after about an hour). But because the cracks were really
    > hairline ones, I just smeared the filler on with a palette knife,
    > forcing it into the crack, then wiped over with a damp sponge.
    >
    > Now the cracks have reappeared. What can I use to prevent this from
    > happening again? Maybe I *should* have used the gun and really forced
    > the gunk into the crack. However, they really ARE hairline ones!
    >
    > Cheers!
    >
    > MM
    dg, Oct 21, 2003
    #2
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  3. Mike Mitchell

    David Hearn Guest

    "Mike Mitchell" <> wrote in message
    news:eek:...
    > I painted the walls four months ago, using Homebase/Dulux Emulsion
    > (whatever I hadn't used up). I treated several hairline cracks
    > beforehand with flexible filler out of the gun (the kind that is
    > overpaintable after about an hour). But because the cracks were really
    > hairline ones, I just smeared the filler on with a palette knife,
    > forcing it into the crack, then wiped over with a damp sponge.
    >
    > Now the cracks have reappeared. What can I use to prevent this from
    > happening again? Maybe I *should* have used the gun and really forced
    > the gunk into the crack. However, they really ARE hairline ones!


    Aren't you meant to widen hairline cracks (into a V shape) and then fill
    them. AFAIK, attempting to fill hairline cracks with filler is
    difficult/impossible to do properly.

    D
    David Hearn, Oct 22, 2003
    #3
  4. Mike Mitchell

    fred Guest

    In article <>, Mike Mitchell
    <> writes
    >I painted the walls four months ago, using Homebase/Dulux Emulsion
    >(whatever I hadn't used up). I treated several hairline cracks
    >beforehand with flexible filler out of the gun (the kind that is
    >overpaintable after about an hour). But because the cracks were really
    >hairline ones, I just smeared the filler on with a palette knife,
    >forcing it into the crack, then wiped over with a damp sponge.
    >
    >Now the cracks have reappeared. What can I use to prevent this from
    >happening again? Maybe I *should* have used the gun and really forced
    >the gunk into the crack. However, they really ARE hairline ones!
    >

    I have an old house with lath and plaster ceilings & walls & this is an
    ongoing problem. There are small movements going on all the time which
    mean that cracks just open up again & again. I am just about to try some
    wall repair tape from screwfix:
    http://www.screwfix.com/app/sfd/cat/pro.jsp?id=87018
    It is very thin and has a flexible self adhesive backing with a tissue paper
    like top layer. Haven't tried it yet, but it looks like it will flex enough to
    absorb movement and is paintable.
    --
    fred
    fred, Oct 22, 2003
    #4
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