Hi All,

This is my first post, been reading the posts on the forum for a while, it's been very informative.

I am specing a new wetroom (2 showers) in an old listed building, use will be commercial, so am going for belt and braces.

Will be using 20mm Marmox boards and system to line partitions in area, ready for tiling. The floor is existing timber joists with new 18mm WBP ply and I plan to use a low profile walk-in shower trays.

The floor will have UFH (18mm Polypipe heavyweight overlay system) so am planning on laying additional 18mm ply under trays so that ply and UFH are at same level, then tanking across both with Durabase C1 and bonding this to the Marmox boards. Tile will then go over the UFH area, so the Durabase will also act as decoupling membrane.

Do you guys see any issues with the proposal? Do you think using the tray option is a little over the top when a level walk-in shower would be so much better? Don't have much experience with wet rooms so any advice would be appreciated.


Thanks Chris

I would use wetroom trays and tile them.. less chance of leaks then..


Have you tried pricing your materials at PHG wetrooms. Chris.. PHG Wetrooms - The Perfect choice for all your wetroom supplies great service and delivery times.

Hany yet will will have a look.

I thought using a tray would give me a first line of defence, the tanking would be the second, or am I just being overly careful? Might be time to join the 20th century!!!

Agree.. time to move on with the times... use the link above and get this project moving.

Also don't forget your 5% Discount for all Tilers Forum members on your wetroom