Tiling to the top (underside) of a window alcove

[Martyn Leeds]

Yes, is what I'd say. The tech person has said it and it will also say roughly the same on the bag.. This is just a couple of small ceramics on a window reveal yes?

 

[Realstokebloke]

Yup.

Tiddlers: 20x20's.

Just find it odd (confusing) that: as I understood it, cement adhesives needed a primed base, the SPF bag & the primer both say to prime, whereas the 'techie' said no need when going straight onto pb?

which, in turn is the complete opposite if the advice I had when doing my ensuite recently (use acrylic and score the board!).

So...

no primer then.