Wet Room Project (Not another one!)

[YT233]

Hi Guys,

Planning to re do my wet room. Original wet room was built as follows:

Impey aquadec
Aquapanel on walls
Marine ply on floor

all the edges were sealed with the impey joint tape. Forgot to roll out the tanking membrane. Thankfully not had a leak yet due to my incompetence.

New project looking to do the following:

Impey aquadec
Ditra matting on floor
Kerdi Board on wall
Kerdi tape to seal all joints

I have 2 questions:

1: the ditra matting do i lay that over the aqua dec or just finish on the edge and then seal with the kerdi tape.

2: sealing the joints where the kerdi board meets the former, with just the kerdi band will it be enough?

Thank you in advance for all your help. This forum has been very informative.

 

[Old Mod]

Hi and welcome to the forum.

Your Ditra should finish level with your former and seal with Kerdi Keba (band)

Sealing between wall and former with the keba will be fine, kerdi Keba is waterproof, however, you must use Kerdi Coll adhesive in conjunction, its waterproof also.
Your former must be fitted correctly with no movement.

But why Impey deck when everything else is schluter?

Schluter formers have Kerdi Keba attached and it's factory fitted, perfectly watertight.

 

[Drainage by Design]

But why Impey deck when everything else is schluter?
Schluter formers have Kerdi Keba attached and it's factory fitted, perfectly watertight.

Remember that Impey and Schluter manufacturing processes are different
Impey is a composite board (fibreglass and polyester resin), with falls moulded in it,originally designed for use as a load bearing showertray, to be covered with vinyl flooring as the waterproofing AND finish.
It's been adapted (or rather the installation of it has) to use with tiling.
Schluter formers follow the other industry method pioneered by Wedi, now used by many, a polystyrene foam sheet with falls cut in it and then covered with a cement based surface to faciliate tile adhesion. It's not load-bearing, of course.