I wanted to know if anyone had any experiences using the bubble wrap w/ the double sided radiant barrier.
I had a weird experience thanks to a fire pit, my Brother-in-Law, and a few beers. My Brother-in-Law made a make shift pot holder looking glove and held it about 8" away from a pile of extremely hot embers. After nearly a minute the glove started to smoke because the exterior nearest the fire was starting to melt. Despite this, he said the inside never got that hot.
What I am figuring is that, if this material works this well with such extreme temperatures, why wouldn't it be useful in a knee wall area? It would be a lot easier to install than rigid foam board and much easier to squeeze through a small access hole.
What do you guys think? Do you have experience using this material? (Keep in mind I live in Atlanta, GA, not New England). Thanks!
Installed in that location -- over the fiberglass batts -- I would be concerned about condensation on the bottom surface wicking into the fiberglass and creating mold habitat. I'd also be concerned that dust would accumulate on the top surface and make the radiant properties useless.
Has this stuff been in use long enough to be able to check in on an installation that's 5 or 10 years old to see how it's holding up?
I'm guessing that the foil/bubble wrap will provide a real good air seal if installed properly (like every other air seal material) but will be much more costly than poly wrap and not provide anywhere near the insulation of EPS or XPS board. I've seen no independent testing of these products to verify their claimed "R" values. Knee walls are always a pain; almost makes you want to rip out the walls to re-do everything.
You should put a link to Reflectix in your post. I haven't heard of it.