Hardiebacker

[Diamond Pool Finishers]

i would use addy and go for full bed/fix of board, your finish is only as good as your backing!!

 

[The Legend; Phil Hobson RIP]

Hi Harry, I have Never used Hardibacker on walls. But I use Wedi or Marmox, on brick work I think flex adhesive would be better. Mapei or the like, not sure if Hardiebacker is suitable for dot and dab.

 

[White Room]

The reason being it was'nt designed for the purpose, dry wall adhesive is for gypsum boards even certain metal systems.

You may get a reaction between the two materials which cause a failure if moisture penetrates the gypsum and cement.

 

[harry]

The reason being it was'nt designed for the purpose, dry wall adhesive is for gypsum boards even certain metal systems.

You may get a reaction between the two materials which cause a failure if moisture penetrates the gypsum and cement.

Thanks for all your replies and info, due to the bare brick work been very uneven ( 120 yr old house ) so a full bed of adhesive is not possible, i think I will have to dab it out with plasterboard and then fit a homelux tanking kit ..

 

[doug boardley]

why not use a sand/cement render for your bare blockwork?

 

[Aston]

there is another option..

you could use no more ply! you can dot and dab that. you just use spf adhesive and prime the board with sbr @ 3-1 ratio..they do 6mm and 9mm and you can use you 6mm for doting and dabbing

cheers
ed