1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Denzo tape "stuff" appearing through wall

Discussion in 'Decorating and Painting' started by davo84, 25 Nov 2012.

  1. davo84

    davo84

    Joined:
    3 Sep 2012
    Messages:
    3
    Thanks Received:
    0
    Location:
    London
    Country:
    United Kingdom
    Hi all,

    I had some work carried out in the bathroom and the plumber sealed a couple of pipes with denzo tape and then plastered over them.

    After about a day the plaster was showing some traces of "green stuff" permeating from the denzo tape, and even after a month and a couple of white emulsion coats is still visible and expanding (even though a bit slower). The plumber claimed that he sealed the plaster to make it paintable (although I wasn't there).

    What should I use to get a decent paint finish?

    Thank you in advance,
    Davide
     
  2. joe-90

    joe-90

    Joined:
    28 Oct 2005
    Messages:
    31,284
    Thanks Received:
    1,062
    Country:
    United Kingdom
    Are you sure that there isn't a slow leak?
     
  3. Sponsored Links
  4. davo84

    davo84

    Joined:
    3 Sep 2012
    Messages:
    3
    Thanks Received:
    0
    Location:
    London
    Country:
    United Kingdom
    The pipes have been uncovered for a couple of days and there was no sign of leaks, but I can't exclude that.

    the thing is that the layer of plaster is very very thin, and it does not look like a normal leak, nor seems damp.
     
  5. davo84

    davo84

    Joined:
    3 Sep 2012
    Messages:
    3
    Thanks Received:
    0
    Location:
    London
    Country:
    United Kingdom
    Hi,

    bumping up this post, as I waited long enough to understand that there is no leak. The emulsion got this tight area of yellowish colour (the denso tape permeating).

    What's the best way to prepare it for painting?
     
  6. Sponsored Links
  7. joe-90

    joe-90

    Joined:
    28 Oct 2005
    Messages:
    31,284
    Thanks Received:
    1,062
    Country:
    United Kingdom
    Oil undercoat is by far the cheapest.
     
  8. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page