Which backer board

[rj1884]

Good evening all. I'm starting 2 bathrooms on of which has 22mm chipboard fixed to the joists and the other has 18mm ply, fixed to joists. Both floors are solid. I've used hardie in the past and found it to be ok to use. I've read a lot about marmox and dukkaboards to overlay which is apparently slightly easier to use. From all your vast experience what do you all prefer to overboard with.

 

[cam_low]

Jackoboard. Hardies old news these days

 

[White Room]

For overboarding 6mm hardie glued and screwed.

 

[martin1c]

Love Marmox. Light and easy to cut

 

[johnryan]

Jackoboard. Hardies old news these days

never seen that before. what's the price like? is it easy to use.

 

[lizzardtong]

5.99 +vat at ctd 1200 by 600 mm for 6 or 10mm

 

[johnryan]

5.99 +vat at ctd 1200 by 600 mm for 6 or 10mm

is that the new boards they have on the offers sheet. meant to ask them about those. very good price for them if they're any good. do they do the thicker sizes?

 

[lizzardtong]

Thats the ones. Not sure if they do other sizes. Give them a ring.

 

[rj1884]

Cheers for your replies. Martin1c, when using marmox on these floors would you use 6mm boards. Cam_low, what's the minimum thickness of the jackoboard on these floors. Good price as well

 

[martin1c]

I think 6mm should be fine. Just make sure that you stick with the basics, flexible adhesive and screwed down every 6-8 inches using the plastic or metal washers

 

[judge]

Whats the difference between the jackoboards and the hardi ?

 

[lizzardtong]

Ease of use and insylation properties

 

[charlie1]

If using hardie then use standard cement, not flexi. Hardi advise this! I know I know, everything is telling you to use flexible, I thought so too... We live and learn

 

[White Room]

I still use flexi, it has'nt let me down...

 

[charlie1]

I still use flexi, it has'nt let me down...

if you do ever get a failed floor then don't give them an opportunity to pass blame, follow manufacturers instructions.