[Greenbuilding] [BULK] Re: PEX tubing

[Clarke Olsen]

    I believe that the aluminum layer is an oxygen barrier for use in 
closed
    systems.
    Clarke Olsen

On Jan 17, 2007, at 8:58 AM, Lawrence Lile wrote:
>
> Radiant floor companies sell a special tubing for this application, it
> has an extra layer of plastic on the outside of the PEX.  They also 
> sell
> a tubing called PEX-Al-PEX, which is two layers of polyethylene
> sandwiching a layer of aluminum.  This should last longer than the
> already long-lasting two layer tubing.  The tubing comes in long rolls
> to minimize joints under the slab.
>
> I would not recommend using hardware store tubing.
>
> --Lawrence Lile
>
>