[Cob] pipes

[karl and tabitha o'melay]

I have installed thermal board in a few houses. i'd guess it's not the 
easiest thing to remove--construction glue and a large amount of staples 
make it pretty much permanent. the room reacts quickly to a call for 
heat as long as there isn't too much insulation between the tubes and 
the room (wool area rugs are the worst). no thermal mass inherent in the 
product so when you stop applying heat to the radiant it reacts quickly 
and cools too.

the daughter of Asclepius doesn't like radiant either... 
<http://en.wikipedia.org/wiki/Asclepius>



Lee Shultz wrote:

>For radiant heat, I read a little bit about the WarmBoard:
>http://warmboard.com/
>
>I never used it, and don't know how green it is. But it is an interesting idea. They sell the radiant heat subfloor in a board. If there was a problem, I would think that it would be easier to fix than tearing up an earthen or cement slab.
>
>Has anyone used this product or know anything about it?
>
>Thanks,
>
>Beverly (Lee) Shultz
>Technical Communications Specialist
>Ojai, CA
>805-455-2773
>
>
>-----Original Message-----
>From: coblist-bounces at deatech.com [mailto:coblist-bounces at deatech.com]On
>Behalf Of Shannon C. Dealy
>Sent: Friday, April 29, 2005 9:45 AM
>To: coblist at deatech.com
>Subject: Re: [Cob] pipes
>
>
>  
>
>>From: "karl and tabitha o'melay" <karl at omelay.com>
>>To: <coblist at deatech.com>
>>Sent: Friday, April 29, 2005 9:55 AM
>>Subject: Re: [Cob] pipes
>>
>>
>>    
>>
>>>i second that... pex is great, easy to work with and anyone with limited
>>>mechanical skills can install it. if you kink it  you can heat it with a
>>>heat gun & it'll memory-shape to origional. yes, pex is also for radiant
>>>heating. PVC is evil--i would never consider it for my water supply.
>>>
>>>see http://www.nextwavefilms.com/bluevinyl/sundance.html regarding PVC
>>>
>>>karl
>>>      
>>>
>[snip]
>
>There is no panacea in piping, pex has at least some history of recalls,
>lawsuits, and catastrophic failures, particularly when used to transport
>hot water.  It's use in plumbing is relatively recent, and we don't know
>what the ultimate long term issues might be (my brother was one of the
>unlucky ones who used it in the house he built in the early/mid 1990's).
>It is generally a good idea to assume the worst when using a new material
>for a long term application, because accelerated material life testing
>does not have the greatest track record.  My personal approach is avoid
>routing water anywhere you don't have to (imagine the work involved in
>replacing failed hydronic piping in a cob floor, or even worse, a cement
>one), and make provisions to minimize the damage elsewhere (drainage
>and/or routing through areas where the damage will be minimal).
>
>FWIW.
>
>Shannon C. Dealy      |               DeaTech Research Inc.
>dealy at deatech.com     |          - Custom Software Development -
>                      |    Embedded Systems, Real-time, Device Drivers
>Phone: (800) 467-5820 | Networking, Scientific & Engineering Applications
>   or: (541) 929-4089 |                  www.deatech.com
>
>
>_______________________________________________
>Coblist mailing list
>Coblist at deatech.com
>http://www.deatech.com/mailman/listinfo/coblist
>
>_______________________________________________
>Coblist mailing list
>Coblist at deatech.com
>http://www.deatech.com/mailman/listinfo/coblist
>
>
>  
>