Tom The Great wrote:
On 16 Jan 2007 18:25:40 -0800, wrote:
Over by the plywood in the Home Depot are these panels made for what
you are trying to do. They are what appears to be tongue and groove
underlayment supported on a plastic substrate with many channels to let
air or moisture pass through.
I saw that option too, but the price seems a little high. Does anyone
sell the plastic part seperate?
I suspect that particular design is patented so you probably won't see
it separate for a while.
I have see a drainage product from Exxon called "Tiger Drain" that is a
convoluted plastic mesh mat (very strong) with a filter fabric bonded to
one side intended for use vertically behind retaining walls that I
suspect would function as desired if laid flat under your floor
underlayment.