Hi, got some Abacus tile backer boards for my shower, floors and masonry plastered walls, what adhesive could i use to fix them, there own KST adhesive is quite expensive, wounder what else could i use?

1 hour ago, alexbr said:

Hi, got some Abacus tile backer boards for my shower, floors and masonry plastered walls, what adhesive could i use to fix them, there own KST adhesive is quite expensive, wounder what else could i use?

We’ve gone onto using the Gipson backer board (yellow) Cheaper easer to cut and handle better performance than Hardy 

Use drywall adhesive for fixing 

with a knock in fixing once set