When polystyrene foam insulation was removed from GreenSpec in Sep ’09, why were ICFs and SIPs exceptions?
Also, GreenPrints (Mar ’10) claims that “EBN is working with USGBC to prevent the use of foam plastics insulation inside of buildings and above ground uses and will only be approved for below ground insulation.”
Why were ICFs and SIPs exceptions since both are used above ground?
Also, does GBA believe it is realistic to make significant progress in deep-energy retrofits in the next decade without the use of affordable polystyrene foam insulation?
Thanks in advance for your responses.
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