Great insulation value, but I saw this on the site 'If you submerge a finished Warm Window shade in liquid, uneven shrinkage or sizing issues may occur.'rmrwade said:anybody used that warm window product for this application? claims an r value of 7.69 when used with a single pane window..
https://warmcompany.com/products/warm-home/warm-window
As some folks have pointed out in other threads, the main value in using Reflectix to keep a camper warm is reflecting infrared radiant heat back into the interior space. It's better at reflecting radiant heat than it is at retarding heat conduction. For that reason, it works best if the Reflectix is on the inside of the vinyl, with nothing over the inside face of the Reflectix.Porkface said:Considering a Reflectix layer (or two) for the outside. Light weight and hopefully no more difficult to install and remove than heavier inside insulating layers.
I read that about two layers but didn't investigate further to see how much air space is enough for better insulating between the two layers. Should be easy to add some kind of spacers (thin strips of Reflectix?) to create a few millimeters of air space, much thicker spacers may be too bulky for storage. I'll have to research it some more.NRVhawk said:As some folks have pointed out in other threads, the main value in using Reflectix to keep a camper warm is reflecting infrared radiant heat back into the interior space. It's better at reflecting radiant heat than it is at retarding heat conduction. For that reason, it works best if the Reflectix is on the inside of the vinyl, with nothing over the inside face of the Reflectix.
The Reflectix web site has some interesting reading on how it works. According to that web site, using two layers of Reflectix only has a marginal increase in performance if you don't have an air space between the two layers.