Adhesive Advice: Ceramic on 18mm Chipboard & 6mm No More Ply Screwed and Glued

[drumste]

Hi Folks

I'm looking for some advice. I have spent a lot of time searching for my exact situation and haven't found a definitive answer. Here's what i've got:

-200mm x 50mm Joists on 300mm centres, 12ft span
-18mm Green Chipboard
-6mm No More Ply, screwed and glued with the manufacturer recommended Mega Strength Adhesive (I did have half of it laid with 6mm ply . . . i know, i know, don't all kill me at once :smilewinkgrin: . . . but ripped that up and got the no more ply after reading lots of posts on this forum)
-600mm x 600mm Ceramic Tiles

With this all done can i use a single part flexible adhesive like Mapei Super Flexible Adhesive (Buildfix) or do i need to go 2 part? Recommendations would be very welcome.

Thanks

Steve

 

[Gazzer]

That adhesive will be fine. I assume there is no deflection in the floor ?

 

[drumste]

I forgot to mention i screwed the chipboard to the joists evey 6-8inches too. The floor feels very solid to walk on. I can tell the difference from before the preparation work was done.

 

[Mike]

to test it you can fill a glass of water and put it on the floor in the centre of the room and jump on the floor (not the glass:lol and there should be no spillage

 

[drumste]

Mike

A few of questions:
Do I fill it flush with the top rim or bulging (surface tension)?
Do i jump right next to it ?
What is it does spill ?

Steve

 

[Gazzer]

This is a story we heard from various Reps over the years when sent out to see why a floor failed.

Walk around the glass and if water spills then the floor has too much bounce......we asked "what if no spillage?" They replied " We walk harder !"

 

[Rich]

That is brilliant :lol:

Drunste, as long as the floor was well and truly screwed down feels like there is no bounce to it then your floor should be fine. A good quality single part adhesive is fine

 

[drumste]

Thanks for all the help. I've not made any progress this weekend but i'll be cracking on in the next few weekends. I'll pick up some single part adhesive this week.

 

[Rich]

Dont forget to pop back and let us know how it goes and maybe even show us some pics