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RE: building a shop - radiant heat

To: rex@txol.net, ericm@lne.com, msloane@att.net
Subject: RE: building a shop - radiant heat
From: jmark.vanscoter@amd.com
Date: Wed, 17 Oct 2001 16:47:27 -0500
When I did a search for this technology recently, I found that the generic name 
for the plastic tubing is PEX (meaning cross-linked polyethylene, or Poly 
Ethylene X-linked).

Here is a very good article on the subject:
http://www.taunton.com/finehomebuilding/pages/h00028.asp

Mark V.S. in Austin, TX

-----Original Message-----
From: Rex Burkheimer - WM [mailto:rex@txol.net]


> Nowadays, they use plastic (probably polyethlyne) tubes.

The tradename is PEK. It appears to be widely available. It's about $1.00/ft
in 300-ft rolls, which does about 500 square feet the way I was looking at
it.

For a shop like we are discussing, you will likely be dealing with a
concrete slab floor.
When the foundation is ready to pour, you lay out the tubing on the rebar
grid with the ends sticking out so they will be exposed after the pour. The
plastic walls of the tubing takes care of expansion and corrosion issues.
Once the building is up you attach the heater - regular water heater, solor,
both.
   This appears to be sufficient for Texas climate. If you are in te Great
Frozen North, there may be more elaborate techniques required.
  I'm no expert, and have not done my own yet. Thiis is what I have learned
from my own casual research.

Rex Burkheimer

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