UK 0.11 ach airtight home has Foamglas floor insulation and external Isolair insulation wrapping SIPS panels – Heat Space and Light Ltd 2021 Published 8 March 2021 at 1075 × 696 in Cotswold new build is 55x more airtight than Building Regs and 3x more airtight than Passivhaus ← Previous
