Do I need to prime - Tile Advice

[Gnomes]

I am tiling our kitchen splashbacks with metro ceramic tiles. The old brick /plastered walls were originally painted which I have sanded scraped and scored ....do I need to prime the walls and if yes what product goes best with Weber set plus white adhesive .
Any comments appreciated and Thanks in advance

 

[Dave]

I am tiling our kitchen splashbacks with metro ceramic tiles. The walls were originally painted which I have sanded scraped and scored ....do I need to prime the walls and if yes what product goes best with Weber set plus white adhesive .
Any comments appreciated and Thanks in advance

Weber PR360. 4:1 ratio.

 

[Gnomes]

Having trouble

Weber PR360. 4:1 ratio.

Having trouble finding pr360 as local wholesalers seem to sell mapei or Bal products. What would be a good alternative to the weber primer ....I can get mapei primer G easily . I this any good for my needs

 

[Dave]

Having trouble

Having trouble finding pr360 as local wholesalers seem to sell mapei or Bal products. What would be a good alternative to the weber primer ....I can get mapei primer G easily . I this any good for my needs

Thats fine.