Ford transit passenger van window covers12/16/2023 ![]() ![]() They are blackout, insulating, and somewhat sound deadening curtains with black cloth on one side and white on the other. Ĭurtain talk - I installed a curtain/rod running across my front cab, directly behind the front seats. But this article claims that all these radiant products have an R-value of 1: Īnd comments on all the misleading claims about reflectix, low-e, etc. Low-e: Could not find any data on r-value without air barrier - all published numbers assumed an air barrier. The material R-value for Reflectix is, indeed, only R-1.". Reflectix: " I just got off the phone with David Yarbrough. More background on the use of reflective products without an air gap: I can mount my shades with a 1" air gap between them and the window. My 4 custom windows will have wood framing around them. So even using a fairly thick 1/4" of foam, there's not much r value gained.īut I did come up with a solution to add an air gap. She stated an r value of 3.6 per 1" of mini cell foam. The best info I could find was by talking to the rep at Foam N More. I looked at minicell and it's insulation qualities. Too thick to be easy to put up, take down, and store. I thought about adding additional foam to improve this, but to get any real r-value, you have to go thick. As far as I can tell, Low-E and Reflectix do NOTHING on conduction. Belloinsula's covers fit so tightly they definitely help with this. * Convection: Wrapping the entire window with an almost airtight cover and prevent air flow from the hot window to the interior will definitely help. So I'll use low-e with the foil facing out on warm days during the day. * Radiation - the reflective products really only do radiation insulation, and once they are wrapped in fabric, that disappears. I'm thinking about convection, conduction, and radiation. Since I have so many windows in the van, it's worth it to me to take at least some steps to insulate them. The front windows are asymmetrical, so I'll swap shades from one side of the van to the other. ![]() The rear windows are symmetrical, so the shades can be flipped. Although one downside to mounting with the reflective facing in at night in warm climates is that our body heat is now reflected back to us even more Mount the shades reflective side out during the day, black side out at night, or during the winter to keep heat in. Someone (don't remember who) on this forum suggested reversible shades, reflective on one side, black on the other. Not advertise that someone is sleeping in the van at night with shiny shades on the windows - when there is no need to reflect radiant energy back to the outside Reflect back radiant energy to the outside to keep the van cool - and this need primarily occurs during the day when the sun is shiningĢ. I see several different and conflicting needs:ġ. There's no value to burying aluminum foil behind fabric, and during the day these covers would actually be hotter than the reflective covers. ![]()
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