So I hooked up the sink and decide to see how the Noble Seal TS would work. Not fair if Schluter has a lock on this new niche market so I decided to check myself the exact thickness level difference between Kerdi and Noble Seal TS.
Here is what I have found to date.
It takes 14 layers of Kerdi to equal the thickness of my "Chubby". That is 5/16". Kerdi on their spec sheet shows Kerdi to be 8 mil (including the fleece) so if 8 mil equals 8/1000 of an inch it should take 39 piece of Kerdi to equal 5/16". Something is not right here.
Either Kerdi is thicker than they say or the measurement is not including the fleece. http://www.schluter.com/media/Waterproofing-ENG.pdf If you view the cross section at the above link Kerdi is clearly marked as measured with the fleece. So is Kerdi the waterproofing part only 1/3 of 8/1000 or 1/375" - Can't be - Can it?
I tested some Kerdi Band to see how it stacked up. Since Kerdi Band is sold as being 4mil (4/1000's of an inch) you could argue that it would take twice as many pieces to equal Kerdi. Guess what? It does not. At 4 mil I was only able to stack 16 layers under my "Chubby".
I tried the "Chubby" on the side (5/8") and managed to get only 30 pieces of Kerdi Band under my drain brace. I then cut out 30 pieces of Noble Seal TS. If Noble Seal TS is 30mil or (30/1000") 30 pieces should nearly be an inch.