ressull

I'm going to tile my bathroom (walls & floor) shortly with porcelain tile which are roughly 60cm x 30cm. The walls are plasterboard and the floor is wooden, which I will cover with 18mm board.

From what i've read on here i'd be far better buying bags of powder adhesive and mix myself rather that pre-mixed tubs. I've only ever used ceramic tiles before and have used pre-mixed but think bags would be better for this job, does that sound right? if so, can anyone recommend what brand/type to buy and roughly how much to expect to pay?

thanks in advance

Russell