In a separate thread (http://www.eaglesinternational.net/foru ... foam#p2579) it was suggested that urethane foam breaks down after a few years. That really bothered me.
The urethane family is very stable and quite inert. It is used for a ton of products including shoes, windshield glue, automotive paint, and we used it for our Harley belts at Gates. I had not heard of any issues with product life. Indeed, urethane foam has been the product of choice in the high end RV market and industrial trailers for many years.
I sprayed my truck conversion several years ago. Some of the spray got on the outside. I was told that it would break down in a year or two (efforts to remove it proved fruitless), because of UV exposure. I had that truck for several years, and the overspray never broke down.
I did considerable searching today and the following are some sites that suggest urethane insulation (sprayed or sheet) is very long lasting.
1) http://www.eaglesinternational.net/foru ... foam#p2579
2) http://www.bpmcontracts.co.nz/sprayedurethane.html
3) http://www.stevesurethane.com/faq/
I did quite a bit of searching for problems using words like "life" "breakdown" "Walmat" etc. and did not find any issues.
I then did a search for urethane foam and "trailers" and fournd this site: http://refrigeratedtrans.com/fleet/trai ... _together/
This site would suggest that urethane is still the universal insulator in commercial trailers.
I wonder if the Walmart trailer issue involves some other foam product? Homes have a cellulose based spray and I am sure there are others.
So, I thought I would bring this back up on a new thread and see if others have heard of any problems. This is mostly academic for me, as I will probably never have a situation where I can spray our bus, but I know a bunch of you are headed in that direction.
Jim
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As of 12/1/2021, a major update of the forum software was accomplished
Update: 4/20/2024: The Eagles email account at GoDaddy no longer works. I have set up a gmail account as a workaround: eaglesinternational.email@gmail.com (This link seems to work for my outlook email, but may not work for other email platforms. If it does not load, copy and paste the link in your platform.)
Registration is open to the public (*) and free from any cost or obligation. Please allow up to 36 hours for your application to be processed. If you have problems registering, please email me at: eaglesinternational.email@gmail.com
(*) spambots will be deleted -- only legitimate public applications will be processed.
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Urethane Foam Insulation
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beltguy
- Site Admin
- Posts: 2668
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- Bus Model: 1985 Eagle 10 with Series 60 and Eaton AutoShift 10 speed transmission (SOLD)
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Urethane Foam Insulation
Jim Shepherd
Evergreen, CO
'85 Eagle 10 with Series 60 & Eaton AutoShift 10 speed transmission SOLD
2005 Dodge 2500 with 5.9 Cummins and 6 speed manual 2022 Sunset 28 foot trailer
Bus Project pages: http://beltguy.com/Bus_Project/busproject.htm
Blog: https://beltguy.com/Travelogue/
Email: eaglesinternational.email at gmail.com NOTE this email box is only for general correspondence related to the forum and not technical advice. Technical questions will not receive a response.
Evergreen, CO
'85 Eagle 10 with Series 60 & Eaton AutoShift 10 speed transmission SOLD
2005 Dodge 2500 with 5.9 Cummins and 6 speed manual 2022 Sunset 28 foot trailer
Bus Project pages: http://beltguy.com/Bus_Project/busproject.htm
Blog: https://beltguy.com/Travelogue/
Email: eaglesinternational.email at gmail.com NOTE this email box is only for general correspondence related to the forum and not technical advice. Technical questions will not receive a response.
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luvrbus
- Club Member
- Posts: 2981
- Joined: Mon Oct 13, 2008 12:50 pm
- FMCA #: F262917
- Bus Model: 05
Re: Urethane Foam Insulation
Jim, check out http://www.insulstar.com a divison of Branhart Mfg in North Carolina their Insurance Co paid me dearly to remove it for Walmart on 5 stores.They will get around to telling you that the foam has a R valve of 10R per inch but goes to 6R in 6 months time and are not telling you everything.Bet you their rates went through the roof paying a 5 mil claim.
Clifford
Clifford