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Old 03-01-2013, 08:24 PM   #1
1 Rivet Member
santa fe , New Mexico
Join Date: Feb 2013
Posts: 17
1960 Tradewind insulation question

so, the walls appear to be in decent shape (for a 50+ year old trailer). Want to reinforce the insulation in the walls but don't really want to yank off he interior skin. Can I just spray inside by making a small hole or is it a waste of time? and, do i need to reinsulate if it appears okay from the few spots I can see it poking out?
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Old 03-01-2013, 11:08 PM   #2
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1966 24' Tradewind
1995 34' Excella
Lynchburg , Virginia
Join Date: Jun 2006
Posts: 4,130
It would be a waste of time. Even with no insulation, you do have a dead air space. The weak link is the widows. Remember, new solutions have new problems. Do nothing!

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Old 03-02-2013, 12:13 AM   #3
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1966 26' Overlander
Frozen , Tundra
Join Date: Dec 2012
Posts: 85
With the hundreds to thousands of holes created by the interior pop rivets dead airspace "seams" unlikely, fiberglass insulation does settle and compact over time even if glued in place. Some areas of my 66 were fully intact, some completely uninsulated. Attempts to re-insulate will certainly be labor intensive. While I'm no insulation expert, My dad buckled the roof of a station wagon in the 80s with spray foam. Foams expand and create heat as a byproduct of curing, both of which can damage your interior and exterior skins.
If you are adventurous enough to blaze a new path with foam also be aware that there are many compartments created within the walls by ribs and braces so you would need to ID the sizes of each (trace rivet lines) to not over foam. Also you will encapsulate all wiring in foam with this approach. Don't get me wrong, I want to see this work. It could save hours, frustration, and BTU's over the conventional approach. Just food for thought
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1960, 1960 tradewind

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