Celotex Double R insulation

garry crothers

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Feb 2, 2002, 3:46:08 PM2/2/02

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I was thinking of using Celotex Double R, as the insulation material
for a fridge/freezer that I am fitting.
Does anyone have any experience/views of using this product..

FYI Celotex is a rigid polyisocyanurate foam , in baord form with foil
backing on each side 70mm thick, has a thermal conductivity of 0.018
W/mK and the 70mm thick panel has a Thermal Resistance (m2K/W) of
3.53.

anyone understand those values..??

regards
garrt

Glenn Ashmore

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Feb 2, 2002, 6:31:56 PM2/2/02

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Where the heck did you find 70 mm foil covered iso??? I have been
looking for anything over 18 mm for years!

It will work fine. Iso is the general replacemet for urethane. Has
slightly higher "r" value and slightly less hydroscopic.

Just remember to step the joints with each successive layer overlapping
the joints of the previous so that air has a zig-zag path to get to the
box and wrap it in Poly film to reduce moisture absorption.

garry crothers wrote:

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com

JAXAshby

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Feb 2, 2002, 9:18:06 PM2/2/02

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>Celotex is a rigid polyisocyanurate foam ,

I recall some serious discussion in the past regarding polyisocyanurates, there
were some serious issues with the material, though I do not recall what they
were. The issues were show-stoppers. You might want to do an archives search.

garry crothers

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Feb 3, 2002, 8:38:52 AM2/3/02

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On Sat, 02 Feb 2002 18:31:56 -0500, Glenn Ashmore
<gash...@mindspring.com> wrote:

>Where the heck did you find 70 mm foil covered iso??? I have been
>looking for anything over 18 mm for years!

Take a look here for the
product.....http://www.celotex.co.uk/celotex/PDGA2000.html.
I am able to get it in my local builders merchant in n.ireland

regards
garry

garry crothers

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Feb 3, 2002, 8:53:31 AM2/3/02

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I did a search on google for polyisocyanurate and health, and didnt
find anything too frightening...

regards
garry

JAXAshby

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Feb 3, 2002, 11:08:09 AM2/3/02

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Sorry, I don't recall what the issue were, whether they were health or
effectiveness related, but I do most definitely remember there were issues.
You might try www.boatbuilding or www.cruisingworld.com BB
>
>regards
>garry

Richard Kollmann

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Feb 3, 2002, 7:16:54 PM2/3/02

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In the US if you have a health question on a product produced from
chemicals, the supplier selling the product is required to provide the
necessary health information.
The form required by law is a Material Data Sheet (MSDS). The concerns
with Insulation are the gases given off over time. The MSDS will list
the Time weighted average exposure as a numerical TLV. Example Diesel
Fuel fumes at a TLV of 1000 are hazardous. If the Data Sheet is not
clear you can get advice on the TLV limit from a local Occupational
Safety and Health Office.

http://wwwKollmann-marine.com

Glenn Ashmore

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Feb 3, 2002, 9:15:55 PM2/3/02

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garry crothers wrote:

Oh, that will be a problem. My pickup won't make it back to South
Georgia from N. Ireland. ;-)

John J Filicko

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Feb 10, 2002, 4:01:54 PM2/10/02

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Glenn,
You could always pause the boat project, build yourself a beautiful
airplane, teach yourself to fly, go over to Ireland , and pick up what you
need .-}