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Old 12-31-2010, 05:43 PM   #1
Tifgilm
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Factory enclosed heated underbelly

Hello, we have a 2005 Jayco jayflight 28rls without the enclosed underbelly and we would like to see what the cost is to add a factory option to this, as we would like to use it in -10 temps...any advice?
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Old 12-31-2010, 07:49 PM   #2
dom424
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Dealer told me about $900 for a 24 RKS about a year ago.
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Old 01-02-2011, 05:12 PM   #3
Denise
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Welcome to the Jayco Owners Forum Dom424! Our heated enclosed underbelly was ordered from factory was quoted at original $371 but discounted cost was $260. I couldn't tell you what it would be for aftermarket install.
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Old 01-02-2011, 06:26 PM   #4
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Thanks, I should have read more carefully. The 900 was what the dealer quoted me after I purchased the TT if I wanted to add it.
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Old 01-05-2011, 09:12 AM   #5
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Personally, I rate factory underbelly insulation as a thin layer of fibre glass insulation (that holds critters and water - which is very bad) and is very "over rated" within the RV industry. YES. Very over rated. If you want proper insulation under your 5er/TT/RV, get it done properly. Get the underside sprayed by a certifieed contractor with Closed Cell 2 lbs Spray Foam. If wondering, I got the underside of my wife's 2006 Jayco 29FBS Spray Foamed and its after results were amazing. Based on before and after results, I strongly feel the all trailers must use Spray Foam insulation - professional grade (not those cheap DIY kits). And for our next 5er/TT/RV, I'd get its under belly spray foamed again.

For before and after pictures, surf:

Before:
http://i178.photobucket.com/albums/w...e/100_2046.jpg
http://i178.photobucket.com/albums/w...e/100_2055.jpg
http://i178.photobucket.com/albums/w...e/100_0658.jpg

After:
http://i178.photobucket.com/albums/w...e/100_0695.jpg
http://i178.photobucket.com/albums/w...e/100_0700.jpg
http://i178.photobucket.com/albums/w...e/100_0696.jpg

Note: We only Spring, Summer, Fall camp within our seasonal site TT. Thus, we did NOT get out TT's tanks sprayed. But if we did winter camping, I'd apply a 12V heat blanked on the bottom of each holding tank (to create 12V heated tanks) and spray foam the underside of them as well.

If wondering, my local Spray Foam contactor charged me $900 Canadian (which is often 1/3 higher cost then USA dollars) for 3.5"-4.0" of Closed Cell - 2lbs at 10ft wide by 24ft long. For same size TT in USA, Spray Foaming its underbelly should be approx $600-$800 range. Knowing the before and after results are amazing. I'd get spray foam done again - without hesitation...

Hope this helps in your research...

.
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Old 01-05-2011, 11:21 AM   #6
Denise
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Quote:
Originally Posted by dom424 View Post
Thanks, I should have read more carefully. The 900 was what the dealer quoted me after I purchased the TT if I wanted to add it.
What a mark-up, huh! For that price, you could actually insulate as Spike did


Quote:
Originally Posted by Spike99 View Post
Personally, I rate factory underbelly insulation as a thin layer of fibre glass insulation (that holds critters and water - which is very bad) and is very "over rated" within the RV industry. YES. Very over rated. .

The one thing I don't like about the enclosed underbelly is that we can't see what's going on under the trailer . However for our purposes, we don't camp in freezing weather (unless it uncharacteristically dips into the low 30's in the middle of night)... and our climate stays above freezing year round. However, when it does dip down to the low 30's all we have to do is turn the heater on and we don't have to worry about winterizing for just those few days and thus serves it's purpose for us
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Old 01-05-2011, 02:15 PM   #7
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Lightbulb

Quote:
Originally Posted by Spike99 View Post
Personally, I rate factory underbelly insulation as a thin layer of fibre glass insulation (that holds critters and water - which is very bad) and is very "over rated" within the RV industry. YES. Very over rated. If you want proper insulation under your 5er/TT/RV, get it done properly. Get the underside sprayed by a certifieed contractor with Closed Cell 2 lbs Spray Foam. If wondering, I got the underside of my wife's 2006 Jayco 29FBS Spray Foamed and its after results were amazing. Based on before and after results, I strongly feel the all trailers must use Spray Foam insulation - professional grade (not those cheap DIY kits). And for our next 5er/TT/RV, I'd get its under belly spray foamed again.

For before and after pictures, surf:

Before:
http://i178.photobucket.com/albums/w...e/100_2046.jpg
http://i178.photobucket.com/albums/w...e/100_2055.jpg
http://i178.photobucket.com/albums/w...e/100_0658.jpg

After:
http://i178.photobucket.com/albums/w...e/100_0695.jpg
http://i178.photobucket.com/albums/w...e/100_0700.jpg
http://i178.photobucket.com/albums/w...e/100_0696.jpg

Note: We only Spring, Summer, Fall camp within our seasonal site TT. Thus, we did NOT get out TT's tanks sprayed. But if we did winter camping, I'd apply a 12V heat blanked on the bottom of each holding tank (to create 12V heated tanks) and spray foam the underside of them as well.

If wondering, my local Spray Foam contactor charged me $900 Canadian (which is often 1/3 higher cost then USA dollars) for 3.5"-4.0" of Closed Cell - 2lbs at 10ft wide by 24ft long. For same size TT in USA, Spray Foaming its underbelly should be approx $600-$800 range. Knowing the before and after results are amazing. I'd get spray foam done again - without hesitation...

Hope this helps in your research...

.
Thats a great idea...
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Old 01-05-2011, 06:10 PM   #8
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I have to wonder how comfortable it would be at -10 in a Jayflight, especially with the wind blowing hard, which only has R7 insulation and by is no means considered a "four season" trailer like some of the heavier built Eagle and Arctic Fox trailers with polar packages and such. I suspect the furnace and propane bill would get a workout too. Not saying it can`t be done, I`ve only camped as low as 24 above at night but warming up during the day with mine WITHOUT enclosed underbelly and all went well so I have no experience at those low temps. It`s just not what these trailers were really built for IMO. But you may be just fine, I suppose you won`t know til you try it.

If you enclose the belly remember you still have to heat the tanks and plumbing. Some trailers have heat from the furnace ducted to the tanks and plumbing. Others use the 12 volt heaters as mentioned. Good luck. -Lee
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Old 01-05-2011, 09:19 PM   #9
Spike99
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For a good video about comparing traditonal Fiberglass to Spray Foam (for insulation, critter living reduction, water entry resistance, etc, etc.), surf entire video at:



Comparison speaks for itself....

If planning to get your trailer's underbelly insulated, do get professional grade spray foam. As I posted above, before and after comparison is amazing. To me. all RVs trailers need to use Professional Grade Foam....

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Old 01-06-2011, 12:30 AM   #10
Denise
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FYI... I'm not sure, but I would think that the heated enclosed underbelly would be more for folks like us who don't deal with freezing weather. If you plan to be in freezing temps, you might want to consider a package that is something like the advertised Polar Package One thing I know for sure, even though we have that heated enclosed underbelly, we won't be heading for the snow with our Jay Flight G2!
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