Originally Posted by Bobcat
It is intended to be used inside of air gap walls. The air is the insulator and is trapped and therefore cannot move. Air is a somewhat decent insulator.......
Bobcat, thanks for the explanation. I have a better understanding now. Seeing as I have already bought it and is literally taking up 1/3 of the space in my cabin
, I think I will use it, however, not in all the places on my boat, just to use it up basically. In order to get at least some
use out of it, I was thinking of giving it a 3/4 air gap between the layers. besides, It can only be good for water
resistance since clearly it is impermeable to water. Cheers mate!
Originally Posted by redsky49
..... In the insulating claims that Reflectix make on their packaging, they indicate not what the insulating value of their product might be, but only show the total R value for whatever assembly they are quoting. There is very little insulating value to Reflectix and that is a fact! Yes, there is an insulating value for an air gap (if still air), but you can hardly claim credit for that because of your shiny product. A simple 6 mil plastic sheet will perform as well, and frankly, until the air gap exceeds about 3/4", it doesn't add an appreciable amount of insulating value....
Redsky, I extremely appreciate your honesty. At least now I know literally what I am working with. I figurered at this point, I will just use it, but I will not buy another roll (or 4 since that was how much I would have needed). Instead I will take your advice on getting Armaflex next. I will use that in the V-birth and most insulation
on the hull
port and starboard. If possible, I would like to use this still on the cabin
top while using your suggested 3/4in air gap (and some). I figured that it would be nice to get access to the cabin top in one fail swoop. So I have devized this in order to use it.
I figured that since I will want to use durable waterproof paneling, I would adhere the first layer of Reflexit to the panel, construct a plastic or wood spacers, and seal it between another layer of Reflexit. I figured that your math on 3/4 inch would be a good target. So that it gets the air gap that you suggested it needs. All while still leaving some gap between the hull
and the last layer of Reflexit. I would then mount and screw the panels
to wood furring strips that I would epoxy
to the cabins ceiling prior. Any thoughts anyone on this idea? The panels
themselves would be what the layers and gaps are attached to. I wouldn't, in this scenario, be adhering the ceiling directly. Is this a bad idea? Or something that has a chance of actually working?
Thank you all once again!