Patching up a window reveal

Discussion in 'Painters' Talk' started by Iron_Mike, Sep 28, 2018.

  1. Iron_Mike

    Iron_Mike Active Member


    I am trying to sort out this crack in a large window reveal.

    Appears that someone has attempted to put in some ready mixed filler which looks like cottage cheese.

    Planning on doing the following to sort it out:

    1. Sand down the existing filler.

    2. Give the crack a clean and remove dust

    3. The larger crack above the window, apply skim tape.

    4. Mix and apply filler (Toupret)

    5. Allow filler to set and lightly sand down

    6. Paint

    Any tips appreciated. Video attached.



  2. Richard_

    Richard_ Active Member

    That crack will reappear as sure as night follows day. It'll be where a cavity closer meets the outer wall. The plaster needs to be stripped back and the reveal boarded properly across the full width.

    By the way, is that a sign of damp in the crack across the head?
    Iron_Mike and KIAB like this.
  3. Iron_Mike

    Iron_Mike Active Member

    Thanks Richard.

    Yes I believe water damage has caused the split.
  4. Richard_

    Richard_ Active Member

    Do you know how long it has been like that compared to the age of the window?

    I'd be concerned to work out why & when it got damp. The risk is that the damp could happen again and ruin your repairs.
  5. Iron_Mike

    Iron_Mike Active Member

    Think it has been like that for around 6 months. Whereas the window is years old.

    I am not exactly sure how it came about.

    The rest of the area is ok, so doesn't appear to be an ongoing damp issue.
  6. Richard_

    Richard_ Active Member

    In which case you could repair it and pray the damp doesn't return. I'd remove the plaster and then board across the depth of the reveal to bridge over the cavity closure.
    Iron_Mike likes this.

Share This Page