Twitter SIP #fireresistant #energyefficiency #foundations, #floors, #basements #loadbearingwalls. #sustainableconstruction http://t.co/grDVkzEW1I SIP #fireresistant #energyefficiency #foundations, #floors, #basements #loadbearingwalls. #sustainableconstruction http://t.co/grDVkzEW1I Jun 25, 2014 1 #fireresistant #energyefficiency #foundations, #floors, #basements #loadbearingwalls. #sustainableconstruction