Anyone know how to tile on seraphite? Primer?

[Sean-tries-to-tile]

I have just been told this is seraphite, just about to tile it, wasn't going to prime as I thought it was just sand/cement. House is 1955. Cheers

 

[angrypirate]

Not having any idea what seraphite is, I would be tempted to mechanically fix backer board over it then tile to that, just to be safe.

 

[Sean-tries-to-tile]

Not having any idea what seraphite is, I would be tempted to mechanically fix backer board over it then tile to that, just to be safe.

Hi, thanks for the advice. Unfortunately I can't do that though because its a tiny cloakroom toilet and every cm counts! Even tiling was a concession because it reduces the rooms width by about 3cm!

 

[Dave]

Thats a new substrate on me. I’ve never heard of Seraphite. ?

 

[Sean-tries-to-tile]

Thats a new substrate on me. I’ve never heard of Seraphite. ?

Hi, Well it may not be, I was just told that that is what it is... what does it look like to u in the photo? Is in a downstairs cloakroom loo. At present I plan to use no primer as I don't know what the substrate is (and I've heard pva is a no no for tile adhesive

 

[Dave]

Hi, Well it may not be, I was just told that that is what it is... what does it look like to u in the photo? Is in a downstairs cloakroom loo. At present I plan to use no primer as I don't know what the substrate is (and I've heard pva is a no no for tile adhesive

What adhesive you using ?

 

[angrypirate]

iirc even if it is sand and cement it should be primed, the only thing I don't prime is backer board.

 

[Sean-tries-to-tile]

Ah thanks, I'm sure that very good advice, but I don't know what it is... if I primed with acrylic primer or sbr, and it turned out to be gypsum based plaster... would that be a disaster?

 

[Sean-tries-to-tile]

Dave, BAL flex one is the adhesive

 

[Dave]

Dave, BAL flex one is the adhesive

Not used it lol. But primer is required imo mate. Don’t over apply so not to create a skin.

 

[Sean-tries-to-tile]

Not used it lol. But primer is required imo mate. Don’t over apply so not to create a skin.

Ok, i know that is wiser, but what primer? (Considering i can't identify the substrate)

 

[Dave]

Bal APD. 😁

 

[Sean-tries-to-tile]

Bal APD. 😁

Ah, so is that ok for gypsum based substrates too?

 

[Dave]

Ah, so is that ok for gypsum based substrates too?

It’s Acrylic , so yes.

 

[Sean-tries-to-tile]

It’s Acrylic , so yes.

Thats great, so really, whatever the wall substraight turns out to be, acrylic primer bal apd will work fine? If that's the case then problem solved! And thanks very much for your help to all who commented 👍