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11-12-2006, 07:07 AM
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#21
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Silver Mist
Currently Looking...
Riverhead
, New York
Join Date: Aug 2006
Posts: 3,011
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I disagree with that, the overall R value must average out higher.
Example years ago my grandparents had a home with no insulation in the attic or floors, just the walls.
One year they added insulation to the attic, there was a big improvement.
A few years later they did the floors, another big improvement.
The walls only had 2", the attic and floor had 4".
Based on your theory a house would have the R value of its windows, not!
I added Prodex to the floors (inside) and every wall that I opened up, maybe 40 Sq ft.
Everyplace else like in cabinets and under the sink, wheel wells, behind the built in sofa, the walls under the bed platforms will have Prodex glued in place.
This MUST help how could it not increase the overall R value?
__________________
Bob
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11-12-2006, 07:41 AM
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#22
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Rivet Master
1973 Argosy 26
Norristown
, Pennsylvania
Join Date: Sep 2006
Posts: 645
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Quote:
Originally Posted by Lipets
I disagree with that, the overall R value must average out higher.
Example years ago my grandparents had a home with no insulation in the attic or floors, just the walls.
One year they added insulation to the attic, there was a big improvement.
A few years later they did the floors, another big improvement.
The walls only had 2", the attic and floor had 4".
Based on your theory a house would have the R value of its windows, not!
I added Prodex to the floors (inside) and every wall that I opened up, maybe 40 Sq ft.
Everyplace else like in cabinets and under the sink, wheel wells, behind the built in sofa, the walls under the bed platforms will have Prodex glued in place.
This MUST help how could it not increase the overall R value?
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Hey Lippets; I need a break. Yes insulation helps this is why we install it. We are not talking about a house. Most modern house windows are thermal, in AS they are not. We are talking about the difference in R value between having for instance a 20% of bubble foil and 80% of original fiberglass insulation in the trailer. The 20% of sectional added bubble insulation will not make that much difference in overall R value of the trailer. "Boatdoc"
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11-12-2006, 08:30 AM
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#23
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Retired Moderator
1992 29' Excella
madison
, Wisconsin
Join Date: Aug 2002
Posts: 4,644
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foil bubble insulation?
i use it in my chicken coop, works good and keeps the birds at least 20 degrees warmer. however, the pullets like to pop the bubbles when they get bored.
not bad for basiclly a plywood box. i could see some applications in a trailer, some say the factory now uses it in some applications.
john
__________________
you call them ferrets, i call them weasels.
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11-12-2006, 08:49 AM
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#24
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418
2007 25' Safari FB SE
1958 22' Flying Cloud
1974 29' Ambassador
Yucca Valley
, California
Join Date: Jun 2002
Location: 1963 26' Overlander
Posts: 4,804
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Quote:
Originally Posted by soldiermedic
I am currently doing a partial floor replacement in my 68 Safari. Following the process that Stefroberts made almost famous, I took my lower interior panels off. Most of the insulation looks ok, but there are some spots that look pretty bad. I am interested in using the foil insulation due to it being waterproof, very efficient, and shapable. Has anyone in the past used this? If so did you double the thickness to fill the entire space, or just use a single sheet? Also, anyone know the rivet size for placing the panels back into the ribs once I finish?
Thanks,
SM
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I learned from my research that the foil bubble works best if used continuously, and without gaps. It needs airspace on both sides to work properly. It also needs to be joined meticulously to perform at it's best.
AS a matter of fact, joining the sheets, and sealing the seams took just about as long as installing the material, in my case.
I imagine that it could work well as a partial insulation, so long that you seal it tightly against the ribs.
The insulation in my 1963 Overlander works remarkably well on hot days, as well as on cool nights. I would definitely use it again. The brand I used was Reflectix.
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11-12-2006, 08:59 AM
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#25
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Rivet Master
Currently Looking...
Florissant
, USA
Join Date: Oct 2006
Posts: 5,083
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Holy Cow
The general concensus is to use this type of insulation. There should be an air gap on both sides...I could see using styrofoam blocks as spacers on the outer and inner skin. THe edges at the ribs should be caulked or taped to make it work better. Have I left anything out?
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11-12-2006, 11:14 AM
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#26
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Rivet Master
1973 Argosy 26
Norristown
, Pennsylvania
Join Date: Sep 2006
Posts: 645
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Quote:
Originally Posted by soldiermedic
The general concensus is to use this type of insulation. There should be an air gap on both sides...I could see using styrofoam blocks as spacers on the outer and inner skin. THe edges at the ribs should be caulked or taped to make it work better. Have I left anything out?
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Hey soldiermedic; You got it right.
Air gap on both sides by use of spacers.
Edges should be caulked with solid bead to form a vapor barrier.
No spacers are needed on inner skins if you glue the insulation to spacers on the outer skins.
Wires on top of bubble foil in case you ever have to replace them.
Make sure the insulation is not pushed in against the outer skins.
Good luck, "Boatdoc"
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11-12-2006, 12:20 PM
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#27
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Silver Mist
Currently Looking...
Riverhead
, New York
Join Date: Aug 2006
Posts: 3,011
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I saw something that you can use the foils itself at the spacer material.
Cut 3/4" strips of the foil glue them on the metal.
Then place the insulation in.
__________________
Bob
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11-13-2006, 05:33 PM
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#28
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Addicted to Aluminum
1959 18' "Footer"
1964 24' Tradewind
1954 29' Liner
Woodstock
, Georgia
Join Date: Jun 2005
Posts: 2,015
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for what it's worth, i didn't caulk my edges. i just made all the foil nice and snug. everyghint is taped in with carpet tape, and shimmed on both sides to keep it spaced evenly. if i were to do it over again (and i know i will be doing it again), i would use Uwe's method of gluing to one side. and having the other side totally free. i haven't gotten to install any panels yet, but when i do, it i should need to fish a wire through, and a spacer foam block is in the way, i'll pay for it.
i figure by the 4th or 5th one of tehse things, i'll have things figured out.
jp
__________________
8576
there's always room for one more!
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11-13-2006, 11:39 PM
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#29
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Rivet Master
1967 24' Tradewind
Alameda
, California
Join Date: Feb 2004
Posts: 1,570
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Great Thread
This is such good info. Marking this thread for sure. I'm coming up on doing this soon, when we have the dough and buy supplies.
__________________
"Let's look Death in the face and say, 'Whatever man.'"
~ Hurley
ingrid
1967 24' Tradewind #19104 ~ Forums #4449
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