Installing shower with tile backer boards

[Tommy-Lee Staples]

Hi all,

I have a square en-suite which has 3 walls made of stud work and then one wall is thermalite blocks. I am looking to use insulated tile backer boards with a shower tray. I just wanted to make sure I was doing it right!

I am planning to board the walls with 12mm Jackoboard insulated tile backer board right down to the Moisture resistant T&G chipboard.
There shower tray area with have a coat of SBR and then bedded onto a sand and cement bed with Classi Seal Shower Tray sealant tape as an upstand around shower and then it will be tiled which will overhang the shower tray to ensure water runs into the tray.
The remaining floor will be boarded with 6mm Jackoboard insulated tile backer board cut around shower tray and on a bed of tile adhesive and then screwed to the floor.

Please let me know if I have done anything wrong or missed something important.

 

[Wayners]

Skillbuilder on YouTube covers tray and backer board. Some good advice so take a look.

 

[Felix247]

This is pretty much the same as what I'm doing with my bathroom refurb, though I'm going to use tile adhesive to bed the tray.
Be aware that 12mm Jackoboard probably requires studs at 300mm centres....your's may be wider apart.

 

[Tommy-Lee Staples]

Thanks for your reply. Their instructions show that 10mm is okay for 300mm so I was hoping 12 mm would be okay on 400mm centres laying the boards horizontally with additional noggins to fix the boards too