Which Trailers Have A Double Shell? - Page 5 - Fiberglass RV


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Old 05-02-2013, 06:38 PM   #57
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Originally Posted by accrete View Post
well....when i read the OP the question eye saw (i'll check my eyesight) was the idea of screws or pop rivets holding fixtures and shelves in the structure...that idea was my context for replying
remember Thom you are dealing with some old folks here and to expect us to remember what the context of the original question was 50 post later was! Gezzzzz
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Old 05-02-2013, 06:43 PM   #58
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Old 05-09-2013, 11:06 PM   #59
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As someone who has worked in a profession that delt with insulation, R factors, U factors, thermal transmission, heat loss/gain and whatnot for 45 years i'd just like to say that most of this is just splitting hairs. The differnce in these small cubic footage campers, with the various insulations and hull thicknesses is the difference between running your heater rhree minutes or four minutes to maintain. Not anything to worry about.
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Old 05-09-2013, 11:13 PM   #60
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I have to respectfully disagree with you there, George...

Double hulls and/or insulated walls make a very big difference indeed when it comes to what in my opinion is one of the biggest comfort-related problems with molded trailers: condensation.

Even the smallest gap between the inside and outside surfaces will prevent its formation on interior surfaces, and as someone who's fought that battle for years I can tell you that for a fact.

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Old 05-09-2013, 11:18 PM   #61
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Condensation / proper ventilation and thermal transmission are two seperate issues.
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Old 05-09-2013, 11:46 PM   #62
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Francesca, lots of solutions to the dilima, all depending on the construction of the unit. So many varations. i'm not familiar with the construction of these trailers. Maybe just the installation of a couple of computer sized fans for in and out air. A circulation is usually all that is necessary to curb condinsation in any space.
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Old 05-10-2013, 12:01 AM   #63
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Factors and Insulation

I watch the X-Factor AND have owned both a SCAMP 13' and a Lil'Bigfoot 13'. After watching a few episodes of X-Factor from the 3rd season it became apparent that the Bigfoot required less additional heat (at about 35 degrees) than did the SCAMP.

But, what you pointed out was that there could be a 25% reduction in heater operation and that's a good deal for me.

And I haven't got all that many hairs left to split...


Quote:
Originally Posted by George Nagel View Post
As someone who has worked in a profession that delt with insulation, R factors, U factors, thermal transmission, heat loss/gain and whatnot for 45 years i'd just like to say that most of this is just splitting hairs. The differnce in these small cubic footage campers, with the various insulations and hull thicknesses is the difference between running your heater rhree minutes or four minutes to maintain. Not anything to worry about.
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Old 05-10-2013, 12:12 AM   #64
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Originally Posted by George Nagel View Post
Condensation / proper ventilation and thermal transmission are two seperate issues.
Lower thermal transmission means warmer interior wall surface temperatures, which means less condensation for the same interior temperature and humidity... so they are not so separate. It's the same effect as double-pane windows.
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Old 05-10-2013, 12:18 AM   #65
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Gosh Bob, not having ever watched the "X-factor" , I can't really follow. I was just trying to contribute as best I could.
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Old 05-10-2013, 12:24 AM   #66
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Brian, good point, but i doubt these campers are insulated well enough to make a huge difference. A little ventilation is necessary I think.
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Old 05-10-2013, 03:55 AM   #67
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[QUOTE="George Nagel;386045"]Brian, good point, but i doubt these campers are insulated well enough to make a huge difference. A little ventilation is necessary I think.,considering the vapor barrier provided by the shell. Simply provide fresh air in and the (moist breath) out. The same problem existe in buildings (homes)...1990's ventilation and 2010's insulation and vapor barriers.QUOTE]
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Old 05-10-2013, 08:49 PM   #68
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double hull

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Originally Posted by Ken C View Post
Snoozy is not a double Hull as described above.
I am not Shure what you meant ? the snooz has an outer shell of fiberglass , and an inter shell of fiberglass and between the two there is a layer of closed cell foam to me that sounds like a double hull I have sample's of snooz hull believe me they are double hull
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Old 05-10-2013, 08:56 PM   #69
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Quote:
Originally Posted by BAMA & Pachyderm Posse View Post
I am not Shure what you meant ? the snooz has an outer shell of fiberglass , and an inter shell of fiberglass and between the two there is a layer of closed cell foam to me that sounds like a double hull I have sample's of snooz hull believe me they are double hull
I had the same initial reaction to Ken's post, Herschel, but decided that he meant that since the O.P. was inquiring about both double hulls and molded in cabinets, the Snoozy didn't answer to the purpose/question posed by the O.P.



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Old 05-10-2013, 08:57 PM   #70
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IMHO double-hull in the all molded towable means separate molds to make the components. Not an outer hull with components then built in the interior. But truly all parts molded fiberglass that are not removable. More like four molds.. complete molds, not individual fiberglass cabinetry, etc.
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