Replies

1. 
   inperfectionist | Aug 30, 2008 03:54pm | #1

   Sun,

   Inch and a half slabs are done all the time, w concrete, to accomadate pex on heated installations.

   I'm guessing 2" of concrete would be fine on this unheated porch.

   I don't understand the purpose of this slab in your situation (thermal heat storage??)

   It does make a nice tile base.

   Better get the designer and the tile guy on the same page before you frame this floor.

   Harry

1. 
   Sunburst | Aug 30, 2008 04:27pm | #3

   I think the purpose of the slab is to make for a good weatherproof tile base. Although the porch will get the 3 season room panels, it still might get wet at times if someone leaves them open and it rains. We are not incorporating any type of drainage or pitch to this room. Yeah next week I will speak with the tile guy and designer again, I was just seeing if anyone has an ideas or experience with this here. Thanks.

1. 
   inperfectionist | Aug 30, 2008 04:40pm | #5

   I'm guessing the tile folks may have an effective and less expensive approach.Best of luck with your project.I love screen porches.Harry

2. 
   Henley | Aug 30, 2008 04:17pm | #2

   I haven't used it yet but, that sounds like a great application for
   Ditra.

   Here is their website:

   http://www.schluter.com/6_1_ditra.aspx

3. 
   mikeroop | Aug 30, 2008 04:40pm | #4

   I've never seen a mud slab that wasn't concrete,but what do i know? designers and archys know it all!

4. 
   McMark | Aug 31, 2008 01:49am | #6

   A mud slab could also be a gyp-crete floor.  Bottom line though, the "Designer" isn't doing their job.  Beat on them until you get an answer