Replies

1. 
   BillHartmann | Jan 01, 2005 07:36pm | #1

   There is a product called DRYCORE (maybe DRICORE) that consist of a plastic vapor barrier covered with plywood. The plastic has bumps on it so that it forms an insulation space. But it is not a huge amount of insulation.

   The problem is that is that after adding a finished floor you have raised the floor 1 1/4" or more. That makes for difficult transitions to other areas.

1. 
   1toolman | Jan 02, 2005 06:32am | #2

   Bill,

   I belive the only flooring that DriCore is not approved for is tile.  Everything else is OK.  Carpet, Wood, etc

   I have always wondered about 1/2" of polystyrene with cement board on top.  It is used to insulate under slabs, how about on top.  I would expect it would work as a isolation membrane as well.  I know this does not answer the question and it also adds an extra 1" or more to the floor height as well.

   Tim

1. 
   BillHartmann | Jan 02, 2005 06:40am | #3

   Actually I did just that in my basement for an office.I think that I used 3/4" foam. Then I put plywood over it and use a few tapcon's to hold it in place. Then I installed some underlayment and vynal over it.My big mistake was useing cheap 3 ply plywood and I think that it was too thin if I remember correct (3/8") and I did used screws and no adhesive to attact the underlayment and not all of the screws held.

2. 
   EricPaulson | Jan 02, 2005 05:20pm | #5

   I think he wants to go OVER tile. Not add tile to the top.

   EricI Love A Hand That Meets My Own,

   With A Hold That Causes Some Sensation.

1. 
   hazel8 | Jan 02, 2005 06:14pm | #6

   Yes, SHE does want to go over tile -my message was a bit confusing. I am still concerned that I am going to have a moisture problem around the perimeter of the room....Hazel8

1. 
   EricPaulson | Jan 02, 2005 07:02pm | #7

   The reason it is wet (likely) in the summer is a simple matter of the warm moist air coming in contact with a dense cool object, in this case your floor.

   AC would work, keep the windows shut, thus keeping out some of the warm air, dehumidifier, but that will add heat.

   Carpeting over a later of pad and poly may work.

   I dunno.

   EricI Love A Hand That Meets My Own,

   With A Hold That Causes Some Sensation.

2. 
   Sphere | Jan 02, 2005 08:06pm | #8

   wasn't Hazel a TV show? Wasn;t Hazel a woman? How many fingers are I holding up? LOL...Happy NY guy...you be cool. 

   Spheramid Enterprises Architectural Woodworks

   I'll just do it>

    

    

3. 
   EricPaulson | Jan 02, 2005 09:29pm | #9

   uh............one???

   Hey! Cut that out!

   HNY to you too bud..........hope ur feelin better.

   Sometimes it pays to remember that things can't get much worse. Been there, done that.

   EricI Love A Hand That Meets My Own,

   With A Hold That Causes Some Sensation.

2. 
   billyg | Jan 02, 2005 06:46am | #4

   Wedi board is a foam core board used for tiling.  The foam is extruded foam.  Custom Building Products makes an "Easyboard" with a core that is expanded PS foam.  I would use the Wedi board.  Thinset it down to the slab and tile on top.  It is an insulator and it is waterproof.

   Another way to address the cold and moisture problem is to put a heating mat or wires on the slab, and put a membrane such as Ditra between the heating wires and the tile.

   Billy