Split Face Stone tiles - best sealer to use? and when to seal?

[Matt V]

Are the gray bits painted? if so that needs to be removed

100% agree it needs to be removed, also have you considered the square metre weight of the tiles on the substrate? If that's just normal plaster then it can only take 20kg/m2

 

[hmtiling]

Sorry about the confusing photo, the brown portion of the wall is to be painted, it was plastered last night when I took the photo.

The dark grey bits are having the tiles on them, and our tiler assures us we do not need the Marmox if the walls are keyed properly and good adhesive used...

Those tiles are way over hanging weight for a skimmed wall.

 

[Albert]

It dosent look like it is skimmed just get the paint of and prime
you should be ok. If it is skimmed all is not lost you can overboard
with tilebacker board

 

[hmtiling]

It dosent look like it is skimmed just get the paint of and prime
you should be ok. If it is skimmed all is not lost you can overboard
with tilebacker board

There was another thread about how to tackle this. Apparently his tiler knows better. Those split face weight a lot per m2. I wouldn't do it without backer board and mechanical fixings.

 

[James C]

I agree, my logic was to mechanically fix 4mm Marmox boards through to the brickwork, but the tiler disagreed and says the weight will be taken away slightly as we are tiling from the floor boards now rather than from the skirting board!

 

[Albert]

I agree, my logic was to mechanically fix 4mm Marmox boards through to the brickwork, but the tiler disagreed and says the weight will be taken away slightly as we are tiling from the floor boards now rather than from the skirting board!

James does it tell you weight on the box or did the shop you bought from tell you the weight?

 

[Matt V]

I agree, my logic was to mechanically fix 4mm Marmox boards through to the brickwork, but the tiler disagreed and says the weight will be taken away slightly as we are tiling from the floor boards now rather than from the skirting board!

That's complete rubbish you cannot rest the tiles on the floorboards and tile. You need an expansion gap. Weight would be far too much for those walls needs overboarding as you said

 

[Waluigi]

4mm Wedi.

Score the living daylight out of the paint. Prime, tile adhesive and screws/washers. Not a lot of money the foam boards these days. Not worth the risk

 

[hmtiling]

I believe they come in at around 40kg per m2. As I explained to the op in another thread, the best way is to overboard

 

[hmtiling]

The it'll be fine shout from your tiler is always right until failure