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

Black adhesive on concrete floor

Discussion in 'Floors, Stairs and Lofts' started by Carts69, 14 Nov 2015.

  1. Carts69

    Carts69

    Joined:
    14 Nov 2015
    Messages:
    14
    Thanks Received:
    0
    Country:
    United Kingdom
    Hi, I have just removed old tiles from kitchen floor with a view to laying ceramic tiles,the floor is now thinly coated in a black adhesive that is not wanting to be removed easily, despite throwing everything at it!
    I read that a slurry coat is the best way to go, my question is....can I slurry coat straight over the black as is, or does most of it need removing prior to slurry?
     
  2. Sponsored Links
  3. ree

    ree

    Joined:
    6 Feb 2014
    Messages:
    3,193
    Thanks Received:
    447
    Location:
    California
    Country:
    United Kingdom
    A posted pic would help?

    The black stuff could be either a bitumen adhesive that was used to set the old (ceramic?) tiles - or a DPM substitute to cover the slab surface against any damp.

    Is this stuff a hard brittle shell?

    Does it have ridges from a notched trowel?
     
  4. Carts69

    Carts69

    Joined:
    14 Nov 2015
    Messages:
    14
    Thanks Received:
    0
    Country:
    United Kingdom
    Yes, it's hard And brittle & chips of little by little, also yes there are thin ridges running through it, so it has been troweled on! Any ideas ree?
     
  5. ree

    ree

    Joined:
    6 Feb 2014
    Messages:
    3,193
    Thanks Received:
    447
    Location:
    California
    Country:
    United Kingdom
    You can continue to chip it away to leave a clean background - thats a best practice approach.

    Or, you can knock off any high spots and then prime, & pour a thin layer of SLC. But first call the SLC Mfr's for further advice ref the bitumen.
     
  6. dazlight

    dazlight

    Joined:
    6 Apr 2012
    Messages:
    1,524
    Thanks Received:
    249
    Location:
    Merseyside
    Country:
    United Kingdom
    Grind it off. If solid you can put Ardex NA screed over it
     
  7. simonpolly

    simonpolly

    Joined:
    29 Jan 2009
    Messages:
    333
    Thanks Received:
    17
    Country:
    United Kingdom
    Also for future reference the tiles you removed probably contained asbestos,Marley tiles i think they are called it was common practise in the 1970s to lay them on a coat of bitumen.
     
  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

     
  9. Sponsored Links
Loading...

Share This Page