While others "that look comparable" are stating R-7/R-14/R-14. R-38 really sounds impossible in what seems like a fairly limited space.
What we are looking at right now is the Wildcat maxx. Nice floor plan and "feels nice" inside. Large tank capacities and advertises R-38 floor and ceiling.
We love the Arctic Fox but price wise is a bit steep......
And around Sept 2015 we HOPE to be full timing.
Thanks for any feedback
Rick and Patti
2 Proud CONSERVATIVES
2002 Chevy Silverado, 8.1, Crew, LB, 3.73, 4X4
1992 Road Ranger 32AF, Front Living Quarters
Live in Northern CA ... but the heart is with MONTANA STATE UNIVERSITY
I cannot find the R Value of the walls but figure the best they could have was R-14.....All the brochure stats is Fiberglass fiber roof insulation (R-14), R-38 with Astrofoil.....Same stated for floor.....
If you read the fine print, it will very likely say "calculated R value" and/or "equivalent R value". Calculated really means best case R value not average or worst case, and best case is the combined R values for all components even if all components don't exist over then entire floor. For example, frequently the underbelly only runs between the main frame rails (and that is where the max R value will occur), but the floor area from the frame rails to the side walls will have far less insulation and with a distance of around 12 inches, that represents 25% of the total floor area.
Roof, same thing, max R value will occur where the roof is the thickest, but will be less as the roof tapers. Also, the AC ducts occupy a significant roof area, length x width x thickness and therefore result in a major reduction in actual R value.
My understanding is that astrofoil has an "equivalent R value" that while an impressive number, really doesn't insulate like expected. Maybe someone else can provide more detail. Anyway, true insulation requires real wall, floor and ceiling thickness to provide real R values. R30 requires about 6 inches of rigid foam or about 11 inches of fiberglas. No manufacturer can achieve true R38 floor and roof insulation in a fiver with 6 ft bedroom height and still keep the overall height under 14 ft tall.
Finally, with slide out seals, aluminum frame windows, uninsulated roof vents and many other air leaks and poorly insulated areas, the average RV has a significant surface area that is inadequately insulated that would make real R38 insulation in other areas totally ineffective.
Texas Baptist Men-Retiree Builders since '01
'03 GMC 2500HD D/A EC SB, Jordan controller, custom RKI bed/hitch, TF 45gal tank, grey Speedliner
'11 CrossRoads Cruiser CF32MK loaded Rig Photos
Reflects radiant energy, but seems RV manufacturers are marketing it as additional "insulation". In stick n' brick, it's usually installed directly under the roof deck between the trusses. Where do they put in an RV's "attic"? Makes you wonder what good it does in the subfloor, outside of reflecting lost heat from living area back toward the underside of the floor.
My house has r-38 ceiling insulation. On a house that requires about two feet of fiberglass. Wish I'd heard of astrofoil before...
Astrofoil is the best. WE had it put in our Attic of our stick and brick. Saved a lot of our heating and cooling. Wish they would use it all over on the 5th wheels. Our Key largo has it with the package we had added. Here is the normal numbers.
TOTAL INSULATION VALUES
Walls - R9 Insulation
Roof – R23 Insulation
Floor System - R35 Insulation
Slide Room Floors - Radiant Technology R38 equivalent
1987 Ford F800 7.8 with a RT6610 trans 4.56 rear.
2004 Duramax/allison Trans C/C 4x4
2012 Landmark Key Largo
2008 Lund 1825 Pro Guide Tiller, With a Evinrude 90 HP E-Tec