Quick question guys.
I have some Weber rapid set flexi adhesive (suitable for ply floors)

The floor is solid and the ply is well screwed down. It is only a small bathroom floor, maybe 8m sq.

I have done a search but cant find conclusive advice on this.

Do I prime the floor with a decent tiling primer? as iirc BAL doesnt need the ply priming, but Im not sure about Weber?

Also, what size trowel would you advise I use?
Will 6mm be enough? I dont want to raise the floor height toooo much as the ply already lifts it a lot.

The tiles are polished porcelain , 600 x 300mm

Any other tips would be appreciated.

Thanks in advance

Weber tiling solutions recommends sealing the non tiling surface i.e. back and edges with Weber AD250. They say priming the tiling surface is not necessary but it can "help to reduce distortion of the wood from the moisture in the wet adhesive mix"

trowel Size should be a minimum of 10mm notch but I personally use a thick bed/solid bed trowel.

Originally Posted by grumpygrouter

Weber tiling solutions recommends sealing the non tiling surface i.e. back and edges with Weber AD250. They say priming the tiling surface is not necessary but it can "help to reduce distortion of the wood from the moisture in the wet adhesive mix"

Thanks grumpy grouter.

That is good to know

Anyone got any suggestions on trowel size while Im at it?!

Check my post again I added a bit.

trowel size doesn't really matter as long as you a solid bed but i would of thought with that size tile it would need to be at least 10mm Webber i would have thought would have all these details on there website under application :Pete
weber.set SPF - Weber, world?s leading manufacturer of industrial mortars for the facade, tile fixing and construction markets

Thanks guys!

Gulp....solid bed
Since when? Weber advocate a notched trowel for the use of their adhesive (to floors as well) on their site...?

Will it be ok with a 10mm round notched trowel?

8m sq was an exaggeration, I would say 4msq and only 2.5 of that is actual foot traffic heavy..

all u have to do generally to get a solid bed is flat skim the back of the tile which i would always do unless i was using PTB it is good practice on floor tiling :Pete

Originally Posted by theanalyst

Thanks guys!

Gulp....solid bed
Since when? Weber advocate a notched trowel for the use of their adhesive (to floors as well) on their site...?

Will it be ok with a 10mm round notched trowel?

8m sq was an exaggeration, I would say 4msq and only 2.5 of that is actual foot traffic heavy..

Sounds like you are misunderstanding the term "solid bed" slightly. You still use a notched trowel to apply the adhesvise, as you press the tile into place you move it around to distribute the adhesive underneath the tile. if you have applied enough adhesives it will spread to give a "solid bed" beneath the tile. You can check this by lifting a tile after you have set it to check your coverage on the back of the tile and the substrate - you should have 100% coverage.

also dont forget to seal the tiles before you grout,

Originally Posted by grumpygrouter

Sounds like you are misunderstanding the term "solid bed" slightly. You still use a notched trowel to apply the adhesvise, as you press the tile into place you move it around to distribute the adhesive underneath the tile. if you have applied enough adhesives it will spread to give a "solid bed" beneath the tile. You can check this by lifting a tile after you have set it to check your coverage on the back of the tile and the substrate - you should have 100% coverage.

Thanks grumpy I was indeed misunderstanding the 'solid bed' terminology!!

Rav - thanks, will do

Originally Posted by theanalyst

Thanks guys!

Gulp....solid bed
Since when? Weber advocate a notched trowel for the use of their adhesive (to floors as well) on their site...?

Will it be ok with a 10mm round notched trowel?

8m sq was an exaggeration, I would say 4msq and only 2.5 of that is actual foot traffic heavy..

that should be fine

Originally Posted by doug boardley

that should be fine

Thanks Doug