Products > Therma > Therma TR27 LPC/FM > Overview Therma TR27 LPC/FM Insulation for flat roofs waterproofed with fully adhered single-ply, partially bonded built-up felt, mastic asphalt and cold liquid applied waterproofing Kingspan Therma TR27 LPC/FM Properties Download PDF Thermal conductivity (insulant thickness) 0.026 W/m.K (< 80 mm) 0.025 W/m.K (80–119 mm) 0.024 W/m.K (≥ 120 mm) Compressive strength at 10% compression 150 kPa Facings Coated glass tissue Core High performance rigid thermoset polyisocyanurate (PIR) insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP). Board size 1.2 x 1.2 m