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Old 03-02-2014, 07:11 AM   #1
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Wood roofs & floors ??

Just received Jayco's 2014 Eagle brochure. Inside back page illustrates Jayco's construction diagram. Seems Jayco is still using wood in their roof trusses and in their floor joists. OLD TECHNOLOGY!!!
Jayco's prices certainly aren't any cheaper than anyone else's and yet other RV Mfgr's are using aluminum.
Plus the roof insulation and floor is standard residential fiberglass insulation.
Don't let anyone kid you the R-14 foil works, as it is only good under certain construction methods which RV's DO NOT meet.
Just thought you should know.
(18 days till Spring!!)
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Old 03-02-2014, 07:19 AM   #2
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Numerous manufacturers still use wood it just depends on the price point of the unit, There are still hundreds of units on the road with all wood frames that have held up fine. If they are properly maintained there should not be any issues.
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Old 03-02-2014, 07:57 AM   #3
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Originally Posted by Grumpy View Post
Numerous manufacturers still use wood it just depends on the price point of the unit, There are still hundreds of units on the road with all wood frames that have held up fine. If they are properly maintained there should not be any issues.
==============================
Granted! Of course the word here is maintenance.
My point though was Jayco's Eagle line is their top of the line Travel Trailer and they still are using old technology. For instance: Keystone's Cougar High Country (their top of the line) has all aluminum welded walls, floors and ceiling. Plus they use foam insulation in the walls, floors and ceilings. Makes for a very well insulated- sound proof construction. And the pricing is the same....

Hopefully Jayco will start upgrading- the technology has been available for a few years now.
Happy trails,
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Old 03-02-2014, 08:42 AM   #4
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The wood arched roof truss is stronger then stamped or modular metal based roof systems. Jayco touts the roof structure in online demo's showing how their pre-stressed truss and oversized nail plates with vertical supports are stronger then standard roofs. Also, wood in the floors and roofs is common on upper brands because of the thermal attributes of wood versus aluminum tubing. I had a unit with tubular aluminum floor joists bonded to foam and luan, worse flex in a floor I've ever owned.
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Old 03-02-2014, 08:53 AM   #5
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Originally Posted by billb800si View Post
snip....... Seems Jayco is still using wood in their roof trusses and in their floor joists. OLD TECHNOLOGY!!! Jayco's prices certainly aren't any cheaper than anyone else's and yet other RV Mfgr's are using aluminum.....snip
IMO the use of wood in a TT's frame structure wouldn't be considered "old technology", what's important is how any given material is utilized and/or applied. The use of aluminum in framing may have it's advantages in some applications, but IMO in the RV industry it's to reduce weight which doesn't mean it's the best choice over other materials.

Bob
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Old 03-02-2014, 09:11 AM   #6
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They are probably using wood to boost their "sustainable" earth friendly green ROHS compliant ratings.
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Old 03-02-2014, 09:26 AM   #7
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Wood does not transfer heat and cold as much as Aluminum...just a thought
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Old 03-02-2014, 09:37 AM   #8
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Eagle is not the top of the line for their Fifth Wheels. They have the HT(half-ton towable), Eagle Touring, Eagle, Premier and then Pinnacle. The fact that they have been in this business for quite some time speaks well for the quality of their product, in my opinion. And, I have owned two Jaycos, so far with no roof or floor quality problems.
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Old 03-02-2014, 09:47 AM   #9
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[QUOTE=billb800si;179177]Just received Jayco's 2014 Eagle brochure. Inside back page illustrates Jayco's construction diagram. Seems Jayco is still using wood in their roof trusses and in their floor joists. OLD TECHNOLOGY!!!
Jayco's prices certainly aren't any cheaper than anyone else's and yet other RV Mfgr's are using aluminum.
Plus the roof insulation and floor is standard residential fiberglass insulation.
Don't let anyone kid you the R-14 foil works, as it is only good under certain construction methods which RV's DO NOT meet.
Just thought you should know.

Here are the specs on said unit...

Below is information on the Cougar High Country Construction

1. Roof:
a) Nylon reinforced molded composite arched roof trusses 16” on center.
b) R-14 battan insulation
c) 3/8” plywood roof decking
d) Dicor rubber roof system
2. Sidewalls
a) 1 ” tubular aluminum framed- double welded
b) 1/8” luan interior wall board
c) 1 ” R-9 Block foam insulation
d) 1/8” exterior luan sub straight
e) 1/8” Premium Medallion high gloss fiberglass
3. Front Wall
A) 1 ” Tubular aluminum framed welded wall
B) R-14 Battan insulation
C) Gel coat fiberglass Front Cap
4. Rear wall & Side of Slide Walls
a) 1 ” tubular framed welded wall
b) R-14 battan insulation
c) 1/8” luan sub straight
d) 1/8” High Gloss Medallion high gloos fiberglass
5. Floor:
a) 1 ” tubular aluminum framed- double welded
b) 1/8” luan interior wall board
c) 1 ” R-9 Block foam insulation
d) 1/8” exterior luan sub straight
e) 1/8” Premium Medallion high gloss fiberglass
6. Slide out floors:
a) R-15 astro-foil sheet insulated
7. Zero degree tested & Rated Underbelly:
a) ” Corruagted plastic covered underbelly
b) Insulated with R-15 Astro Foil Sheet
8. Slide System:
a) Norco Accuslide
9. Exterior Electric Jacks & Remote
a) Lippert
10. Suspension System:
a) Mor Ryde CRE 3000
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Old 03-02-2014, 09:50 AM   #10
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Originally Posted by mwebber78 View Post
The wood arched roof truss is stronger then stamped or modular metal based roof systems. Jayco touts the roof structure in online demo's showing how their pre-stressed truss and oversized nail plates with vertical supports are stronger then standard roofs. Also, wood in the floors and roofs is common on upper brands because of the thermal attributes of wood versus aluminum tubing. I had a unit with tubular aluminum floor joists bonded to foam and luan, worse flex in a floor I've ever owned.
==========================
Jayco's video compares wood joists to competitors WOOD joists that has smaller jointer plates NOT to steel or aluminum. If you don't think aluminum is strong I suggest to stop flying in commercial aircraft.
I had a unit with aluminum floor joists and foam insulation and it didn't flex at all.
Aluminum isn't doing to rot....
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