Your attic is a great way to start saving money. Attic floor insulation does not change actual attic temperature, it instead affects the conditioned living space by keeping hot air from attic out in summer and keeping heat in in the winter. A 5.5 R-Value can be attained in the floor stopping 97% of the radiant energy from passing down thru the mass insulation in the floor. Mass insulation only slows down transfer of heat. After a while the heat will make it through the mass insulation. Heat rises when radiant energy attaches to moisture and becomes lighter than surrounding air. It's a fact that heat rises, and, when looking at adding insulation, most people think of adding more to what they already have. If you have to add 6" of insulation to what you already have, that must mean that you're losing heat through the existing 6". So why would you want to put more of a material that only slows down heat loss/gain on top? Micro-E goes in rafters and reflects heat away from the attic, therefore lowering attic temperature. Also, it keeps heat inside of the house rather than melting snow on the roof and allowing ice to form. By installing Low-E Micro-E under your rafters you're stopping the heat gain in the summer as well as helping to keep it in during the winter months. This also helps in areas where ice damming is a bad problem. Ice damming occurs when the snow on a roof melts at a rapid rate, the moisture then wicks under the roofing material only to freeze yet again. Ice and water shields only patch a problem. Low-E helps solve it! Low-E stops heat gain/loss! Unlike mass insulations Low-E will not absorb heat, it will reflect it. One layer of Low-E under your attic rafters will reflect the heat at it rising from your living area. This will slow the melting process down which could help save your roof and add a few years to it.
Green building is not just a trend, but the wave of the future as more and more homeowners and builders demand energy efficient homes and products.ESP Low-E® Insulation products are designed for maximum energy and cost efficiency. Whether it™s under slab, under roof, around duct work or wrapping the entire house, ESP Low-E® Reflective Insulation saves more money on heating and cooling than regular insulation and housewrap.