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: 3/7/2024: The Eagles email account at GoDaddy no longer works. I have set up a gmail account as a workaround: eaglesinternational.email at gmail.com
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 at gmail.com
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Urethane Foam Insulation
- beltguy
- Site Admin
- Posts: 2663
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- FMCA #: F246286
- 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.
- 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