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spread money over several projects.
Always compare insulation by Rvalue rather than by thickness. Rvalue of insulation is a rating number given to each insulation product to show how well it keeps heated air from flowing through it. The higher the R-value of any insulation, the more it slows down air flow.
During the winter, effective insulation keeps heat from escaping a home. During the summer, insulation keeps heat from coming into a home and it keeps cold air from escaping.
Insulate these areas: unfinished attics, finished attics (between ceilling joists), exterior walls of a home, floors above crawl spaces and all around a slab foundation.
Also insulate duct work ant’ plumbing in uninsulated areas.
Different places in a home need different amounts of insulation. Experts use R-values to recommend the amount for each place.
The Virginia Uniform Statewide Building Code requires R 19 for attic floors and R-19 for exterior walls and floors.
Most insulation has an R value of
88.9%