anhydrite adhesive

  1. R

    Info on Weber.Col anhydrite 2 Gypsum based adhesive...

    Hello all, some of you will know that I managed to get my hands on some of the Weber gypsum based adhesive last week (many thanks to Ajax123). Thought I would put up some info given to me by Weber as Im starting to see more and more anhydrite screeds and VERY few people seem to know how to work...
  2. P

    Thickness of flexible tile adhesive for terracotta tiles on anhydrite screed

    Hi - We are nearing the end of a self-build project and have hit yet another brick wall! We have 100m2 of floor to tile with 25mm thick terracotta tiles over UFH. They are a bit uneven and the makers recommend bedding them on a 15-20mm mortar bed, our tiler wanted 25mm in order to do a good job...
  3. A

    Weber.col Anhydrite Tile Adhesive get tilers seal of approval

    Hi All Weber are now offfering a Gypsum Based tile adhesive. They gave me some bags to give to a tiler of my choice to tile to Gyvlon screed. It does have a relatively short open life on the floor but a reasonable pot life. The tiler has now used the gear and has fed me back his thoughts. He...
  4. D

    Method of prep / priming to anhydrite screeds.

    Ok.. I am interested on some discussion on how you prep and prime an Anhydrite screed ready for tiling. What method of sanding do you use , even if the screed is low laitence .. What method of priming do you do .. Do you use Acrylic primer or maybe epoxy primer. Do you use a cement based...
  5. 2

    anhydrite screeds !!!!!!!!!!

    Hi all , Question about anhydrite screeds iam afraid ! lol.., how do i no if its a anhydrite screed or not ? so confused about screeds!! :mad2: and y do you have to use anhydrous screed ? whats the benefit over latex ? :helpsmilie:
  6. C

    Anhydrite screed with UFH - Help please

    Hi, I am after some advice on my recent project of self build house. I have recently tiled my kitchen floor which was a anhydrite screed with wet type UFH fitted. The floor has been down for over 12 months or more now and fully dried out. I have used the following for my floor after...
  7. F

    Anhydrite Primer

    I'm about to lay Karndean tiles on an anhydrite screed which has hot water underfloor heating. The screed is thoroughly dry and has had the laitance removed. The tile supplier advised priming with Uzin 360 and then smoothing with Uzin NC110. My questions are:- the surface is already smooth...
  8. G

    The dreaded Anhydrite/freeflow screed

    As an ongoing contract i have been tiling a property with screed that i was told was Freeflow screed. No problems up till now. The screed was dry and any laitance was removed and then 2 coats of primer (90 degrees to each other) were laid. Dural Ci was laid with SPF adhesive then the Travertine...
  9. E

    Ettringite formation over gypsum screed

    Just updating a previous post that I made in February about using cement based adhesive over an anhydrite calcium sulphate (gypsum) screed with no primer. Took four months for the problem to develop but tiles are a write off and will all now have to be ripped up and replaced. Symptoms start...
  10. E

    Cement based adhesive on calcium sulphate (gypsum) screed

    Recently a job was completed for me and I'd like some advice if possible. Floor comprises of a poured anhydrite calcium sulphate (gypsum) screed. The tile adhesive use was BAL Rapidset Flexible adhesive and the adhesive was applied directly to the floor screed. Recommended primer such as BAL...

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