I'm really interested in people's experience with the Reflectix/fur combination.
When I look at the Scamp website they talk about having R15 superinsulation. When I look at the Reflectix website I see much lower claims and then only when used in specific ways. Most critical is that the reflective side must be immediately adjacent to an air gap for the material to function as a radiant barrier. As I understand it, on the Scamp one side is glued to the trailer wall (no air gap) and the other side has "Fur" glued to it (no air gap). Reflectix points out that even dust on the reflective surface impairs performance and in the Q&A section of their website says:
What if There is No Air Space Present on Either Side of the Product?
No Air Space = No Reflective Insulation Benefit
(An R-1.1 is provided from the product itself for the Reflective/Double Bubble material.)
So to my mind, the Reflectix is only providing R1.1 used in the way that it is. I can see much greater benefit if the Reflectix was left bare (as Reflectix suggests) - but then we would be looking at silver (aluminum) foil covered walls.
has a similar issue with its double insulation option. From the photos on the Escape
forum it seems that under cabinets, etc. they leave the Reflextix exposed and it presumably works properly as a radiant barrier. But elsewhere (all exposed walls, etc) it seems to be glued behind their regular foam insulation - so to my mind it cant work properly there either.
Please correct me if my understanding of the construction of these trailers is incorrect. Also, could people with experience with both the Reflectix/fur combination and other insulation types provide their comments comparing the Reflextix/fur to these other insulation types. I'm very interested in this.