Tanking tape on outer corners of niche

[phatboy]

Hi all,

I have a niche cut out in my shower wall, it's all made from Jackoboard. The inside corners are easy to tape and tank, but the outer edge I am unsure how to cut the tape to cover it. It isn't the right way for a pre-formed external corner. I've searched online but cannot see anything helpful.

Any advice, or example photos, much appreciated.

Tim

 

[yorksbuilder]

Tape the horizontal edges, seal all areas after with tanking membrane. see below image, no leaks from this

 

[phatboy]

Tape the horizontal edges, seal all areas after with tanking membrane. see below image, no leaks from this

View attachment 400884

Thanks for this, is there tanking tape on the verticals too? Looks like yes on the right, but the left not sure?

I was worried about not getting complete coverage, especially the corners on the face, but the tape seems to just be a means to hold the liquid membrane in place so it covers everywhere, it's actually full of holes!?

 

[yorksbuilder]

The tape provides a flexible joint between a junction, or over screw heads etc.
The tanking membrane seals all holes.
Yes, on the left there's none, I ran out by then!