:wtf: ... well, I just now discovered something of importance ... I had heard many times, that Mylar reflectance is affected by it's overall condition (scratches, smudges, etc) ... but, I never knew how much ... my Mylar is (I thought) in pretty nice condition, I clean it only with Windex and soft papertowels ... looks very shiny, not dull, BUT ... the corners of my cabinet are flat-white painted 2x4s ... the walls are all quality Mylar ... my white 2x4s are reflecting twice as much light as my 'one-year old shiny Mylar' ... damn it ... :wtf:
the image reaper Reviewed by the image reaper on . Mylar vs. foil For a long time I assumed everyone knew what they were talking about when they said not to use aluminum foil, and to use mylar. Apparently foil can create hot spots. But here's the thing, so can mylar. In fact, it's often used precisely because of its ability to reflect heat! Anyway, I've heard all sorts of misinformation, like that aluminum foil is only 40% reflective whereas mylar is 98% reflective. So I looked up some data in my thermodynamics textbook from college. Actually, Rating: 5