material for outdoor window covers

Check this oitHERE

I did reflectix on my exterior windows to keep the heat out here in AZ while my RV was parked outside my home. Here's a pic.



Worked great for about two years. Really kept inside temps down. Held up against the wind for a while, also. Then the Reflextix started to fall apart. The velcro lasts forever, but the foil started to peel from the bubble wrap. I kept repairing it, but finally gave up and bought a cover instead.

I don't think it would be very useful against -40 cold.

Eric

PopupGizmos are used for that purpose on the bunk ends of hybrids and popups. Maybe something like that?

Contact them and they may like the idea enough to put them into production and give you a prototype set!
http://www.popupgizmos.com/bunkcoverpage.htm

Hi,

I want to use the outside covers in summer time to prevent heat gain. At the same time I want to be able to use them at -40 if need be.

You didn't specify what 'extreme cold' is, but I dont think any sort of outside material will help much.
Many snowbird Rv'rs use a insulation in their windows that's based on bubble wrap packing material. It is definetly INSIDE ONLY and is just cut to friction fit inside the window frame. Have seen it used in AZ as protection against sun damage during summer storage, so it should hold up fairly well. You should be able to find it in many big box home stores.
Hope that helps

Hi Jim,

I think Mylar would be pretty fragile at -40. They are for keeping heat out. I am not sure Mylar can be sewn.

The inside covers are going to be a sandwich that includes a layer of Mylar--but that would be unsuitable for outdoor use. Joanne's fabrics sells the material.

I put my existing vent and skylight "pillows" in large foil bags intended for bringing frozen goods home in hot weather. It made some difference on heat gain, and heat loss, so far as I can tell, over just the pillows.

I made "temporary" covers for the cab over windows, and sky lights from windshield cover material from the dollar store.

Per other thread are they for heat as well? If yes I would consider something with a Mylar or other reflective skin. If no black would allow some small absorption of heat. Every little bit counts.

Jim