Client had 2 buildings side by side totaling 10,000sf. Largo Green (LG) designed an attic energy efficiency plan including Radiant Barrier. LG sourced the best products in using HeatBloc-Ultra paint. It's an aluminum colored, water- based, low emissivity (low-e) coating. LG applied it to the entire under-roof and rafters. HeatBloc-Ultra lowers their surface emissivity to 0.19 or lower, blocking over 80% of the radiant heat. Client noticed immediate significant cooling results