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

Is it ok to leave a very small amount of wallpaper glue on plaster before priming?

Discussion in 'Decorating and Painting' started by Robbie Rollie, 8 Sep 2020.

  1. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Is it ok to leave a small, smooth amount of wallpaper glue, seemingly perfectly level with the plaster to the eye and touch before priming with a dedicated primer? I can get it all off in little 3 by 3'' patches with hot, soapy, vinegary, bicarbonate of soda water but it takes a lot of hard scrubbing and I've got a house worth of big walls to go. It would take a long time and maybe wear out my arm at this rate. 20200908_140533.jpg 20200908_140520.jpg
     
  2. Sponsored Links
  3. JohnD

    JohnD

    Joined:
    15 Nov 2005
    Messages:
    65,361
    Thanks Received:
    3,508
    Location:
    Morecambe
    Country:
    Cook Islands
    Are you sure it is glue?

    Not distemper?

    How old is the house?

    You can get paste off by spraying it with warm water to soften it, then scraping of the sludge with a broad metal scraper.

    BTW vinegar and bicarbonate neutralise each other.
     
  4. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Pretty sure it's not distemper (first I've ever hear of it and just looked it up), I scraped off wallpaper and as much of what I think is glue that I could and now my scraper won't affect what's left as it's very smooth after scrubbing with my solution. I'm hoping I've got rid of enough with my scrubbing, that's been quite hard already, to not have to really put my back into it to get it to completely bare plaster. It seems like what's left might even work some way towards being a primer. Using a better solution might help too, thanks a lot for pointing out my mistake with vinegar and bicarb.
     
  5. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    The whiter patches feel smoother than the grey plaster but not glossy as some describe wallpaper glue sometimes being after scraping on here.
     
  6. JohnD

    JohnD

    Joined:
    15 Nov 2005
    Messages:
    65,361
    Thanks Received:
    3,508
    Location:
    Morecambe
    Country:
    Cook Islands
    How old is the house?

    What colour is the stuff you scrub off?

    Might be supermatt.
     
  7. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    I don't know, maybe 40-60? No newer than mid century.

    20200908_145233.jpg Here's a photo of some of the remaining wallpaper and what can be seen of what I've been scraping and scrubbing off.
     
  8. JohnD

    JohnD

    Joined:
    15 Nov 2005
    Messages:
    65,361
    Thanks Received:
    3,508
    Location:
    Morecambe
    Country:
    Cook Islands
    have you got a pump-up plant-mister?

    it looks like the paper is painted woodchip, which is horrible.
     
  9. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Yep I have.

    It really is yeah.
     
  10. Sponsored Links
  11. JohnD

    JohnD

    Joined:
    15 Nov 2005
    Messages:
    65,361
    Thanks Received:
    3,508
    Location:
    Morecambe
    Country:
    Cook Islands
    mist it repeatedly with warm water and a tiny spot of WUL. It will slowly soak through.
     
  12. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Then just wipe off with a rag?
     
  13. JohnD

    JohnD

    Joined:
    15 Nov 2005
    Messages:
    65,361
    Thanks Received:
    3,508
    Location:
    Morecambe
    Country:
    Cook Islands
    scrape it off with your broad metal scraper.
     
  14. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Ahh that's loads easier, thanks very much.
     
  15. mattylad

    mattylad

    Joined:
    27 Apr 2008
    Messages:
    7,201
    Thanks Received:
    459
    Country:
    United Kingdom
    A wallpaper steamer does a good job too.
    However, glue is a biatch and won't come peacefully.

    I just removed ancient paper from my stairwell walls, the paste left behind would have withstood a nuclear explosion.
    Had to sand the walls down in the end, very messy but didnt take too long.
     
  16. opps

    opps

    Joined:
    16 Jun 2006
    Messages:
    4,308
    Thanks Received:
    661
    Location:
    London
    Country:
    United Kingdom
    Personally, I would recommend lining the walls prior to painting them. You will (read:should) get a much better finish. Tiny amounts of residual glue will not be an issue.

    Other than washing up liquid and warm water, you could use Zinsser DIF, it is an enzyme based solution that breaks down the starch in the glue. Or sand the glue away with a DA sander connected to a dust extractor.
     
    • Thanks Thanks x 1
  17. Robbie Rollie

    Robbie Rollie

    Joined:
    8 Sep 2020
    Messages:
    15
    Thanks Received:
    0
    Country:
    United Kingdom
    Thanks, leaving some of the residual glue will save me a lot of time and effort. What's lining? I was planning on a couple of layers of primer before painting.
     
Sponsored Links
Loading...

Share This Page