I have not been able to find any brand of static-cling window film that is clear (or almost clear) and blocks 99% of UV. They seem to top out at about 90%. Could you please direct me to a brand that is removable, clear, and blocks 99% of UV rays? The less distortion, the better, of course.

I have single pane windows that are probably more than 40 years old, and that have a few cracks. Could I safely install regular (non-cling) film? I am a renter, so cannot replace windows, do not want to damage them further, and would ideally want to be able to remove film when I move out. Also, film should not be noticably tinted.

Any advice would be much appreciated!

Thanks.

Also, Winter performance it no wholly true. Static cling films CAN be removed, however, the amount of heat gain while the sun is lower in the sky is nominal, you are actually not gaining from it, since you are losing heat through the glass. It also does very little to heat areas that will radiate the heat into the space.(ie. floors, furniture) Couple that with the fact that film provides an insulating value (heat loss reduction can be as high as 10-15%)

Nice topic, but the facts are a little skewed.