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Discuss Thickness of WALL tile adhesive in the DIY Tiling Forum area at TilersForums.co.uk.

  1. Jrterror

    Jrterror Active Member

    Location:
    Barnsley
    Hi.
    If using a 6mm notched float to apply adhesive, once bedded, how thick should the adhesive be?

    Additionally, I decided to buy a tile levelling system and I notice that the foot of each unit (the section that lays beneath the tile) is bent upward, like this -). It sits around 6mm high, so I'm thinking that dictates the thickness of the adhesive, but does that not mean that the tile is not squashing into the adhesive, if using a 6mm float.
     
  2. jcrtiling

    jcrtiling Professional Tiler TTA Member

    Location:
    Salisbury
    What size tile are you using
     
  3. Waluigi

    Waluigi Professional Tiler Top Contributor

    Location:
    UK
    6mm is far too thin for the tiles you are using if I remember correctly from your thread #85
     
  4. Jrterror

    Jrterror Active Member

    Location:
    Barnsley
    They're 500mm x 300mm

    Ive put three tiles on and I struggled a little. I think I mixed the adhesive to tight I struggled to push the tiles in to the Addy, I also tried to use the Vitrex Lash levelling system and the foot of each unit appears to lift the tile away from the adhesive.

    The tiles also seem to have a slight curve in them to. When I look down at the adhesive behind the tiles, it's thicker in the middle than it is the edges.

    I should never have started to be honest, I didn't leave enough time to do owt before I had to go out.
     
  5. Waluigi

    Waluigi Professional Tiler Top Contributor

    Location:
    UK
    I’d go 10mm notched trowel.
     
  6. hmtiling

    hmtiling Trusted Advisor Professional Tiler JOTM Winner

    Location:
    Isle of Wight
    Lash clips are terrible. You'll need 12mm notch minimum. 6mm not suitable for that size tile unless walls and tiles are perfect and not using wedge type clips
     
    • Like Like x 1
  7. Jrterror

    Jrterror Active Member

    Location:
    Barnsley
    I thought so. I took them out. The walls are perfect, so hoping it will be fine.

    Is there information, i.e a chart that indicates minimum adhesive thickness for different size tiles?
     
  8. 3_fall

    3_fall Administrator. Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    SW London
    As Harry has said, ditch the lash clip, unfortunately the worst on the market, because of that curved base plate.

    Go to our sponsors @Pro Tiler Tools@Pro Tiler Tools and get these

    Levelling clips

    Use a 12mm notch trowel as above and mix adhesive as instructed on the bag, to the correct proportions.
    Trowel wall and using flat edge of trowel skim back of the tile too. Fit the tile and remove it, and check you have good coverage, if not, trowel adhesive on back of tile where it’s needed, and try again.
    Make sure you have standard set adhesive and not rapid.
    Mix approx a quarter of the bag to start, just till you get used to it.
    And try again. :)
     
  9. 3_fall

    3_fall Administrator. Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    SW London
    The minimum thickness of adhesive bed is one that gives you full coverage when tiles are fitted.
     
  10. Cranbrook

    Cranbrook TilersForums.co.uk Addict

    My local branch of CTD (Cardiff) sell the lash system for some unbeknown reason! Think they'd know better!
     
    • Agree Agree x 2
  11. Waluigi

    Waluigi Professional Tiler Top Contributor

    Location:
    UK
    I can vouch for Protiler tools and the Premtool system. Very reasonable too. Sam @ Protiler is excellent in terms of being helpful and sending stuff out ASAFP

    Also if you download he DPD App you can automatically see your parcel.
     
  12. Jrterror

    Jrterror Active Member

    Location:
    Barnsley
    Hi. Thanks for this. that's helpful. I've decided to use the lash system. But, need to be seen making progress tomorrow. The Mrs is getting fed up of my very slow progress with this project. So, Im gonna go ahead and tile without a levelling system since I wont be able to get a good one from anywhere tomorrow, Sunday.

    I did mix exactly as indicated on the bag. The bag said 10kg requires 3.8lt of water. So, I measured out 2.5kg, using my Mrs weighing scales (don't tell her), then added it to 0.95lt of water. I then mixed it with a paddle in a drill. I suppose I should have trusted my instinct when it appeared to be quite stiff, but thought well I've measured it out exactly. Not having done any tiling before, I had no idea of the consistency required. I even used a second type of weighing scale, just to make sure my quantities were correct.

    Anyway, lesson learned.

    I keep thinking should I, in the morning, attempt to remove the three tiles I have done, just in case they have not adhered correctly, but worry that they'll just pull off all the tanking that I've all ready done. Especially since they'll have been on overnight. I also wish I'd not started in the shower section of the en-suite, the most critical area.

    lots of lessons learnt today.

    Not gonna give up though.
    Thanks again
     
  13. 3_fall

    3_fall Administrator. Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    SW London
    The consistency wants to be of thick wallpaper paste.
    Dip your serrated trowel in to the mix and scoop up a lump of adhesive size of your fist and hold it perpendicular to the floor, it should in between staying on the trowel and slumping off. Make sense?

    Don’t try to remove the fixed tiles. If they’re acceptable as they are, as there is only 3, force adhesive in all around the sides and in any voids.
    If they’re on the verge of falling off anyway, then remove them.
     
  14. Jrterror

    Jrterror Active Member

    Location:
    Barnsley
    3 FAll, You Are A Star! You've said just what I wanted to hear. I wish everyone else on here was as helpful. Many thanks for your help, it really is much appreciated
     
  15. 3_fall

    3_fall Administrator. Staff Member Trusted Advisor Professional Tiler JOTM Winner Top Contributor

    Location:
    SW London
    Just a thought, but did you leave the adhesive to stand after you first mixed it?
    Once mixed leave it to ‘slake’ for 5-10 mins, (allow the mix to absorb all the water properly) then remix. It should return to the state at which it was first mixed.
    It will stay useable longer, and at no point add more water, it will weaken the mix and go off quicker.
    Also clean the bucket between mixes, dried adhesive on the sides will set the fresh adhesive quicker.
     
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