Need advice – thin slab over radiant

In the next few weeks I’ll be pouring a 1 1/2″ thin slab over radiant tubing on TJ Performance Panels.
The current plan is to use pea gravel with fibers and superplasticizer. Since the subfloor will be covered with Visqueen I’m worried about excess bleed water and cupping.
Anybody have experience with this type of slab?
Replies
Greetings Jim,
This post, in response to your question, will bump the thread through the 'recent discussion' listing again which will increase it's viewing.
Perhaps it will catch someone's attention that can help you with advice.
Cheers
-Thoreau's Walden
In the event you fail to receive the information you requested you may be able to find it in the achive listing of old threads on Breaktime.
If you scroll up in the upper left corner of your screen there is an advanced search function that will take you to a page of instructions directing you to previous threads dealing with whatever you type in the search bar.
If you type in 'radiant heat', 'floor heating' or other keywords of the subject matter you'll get a supply of data from those old threads.
Cheers
-Thoreau's Walden
Why are you not using gypcrete? I did it over 1-1/4 Advantec and it worked just fine. There was a little water leaking to the basement but nothing substantial. The contractor sealed up the penetrations prior to the pour. If I had to do it over I'd wait till nice weather. We did it in Feb 06 and keeping it warm plus keeping the rest of the building dry was a PITA and expensive. We tiled over a little more than half and glued Santos Mahogany over the rest.