phenolic foam thermal insulation pre-insulated duct insulation panel HVAC ducting system heat insulation

Rigid phenolic insulation products offer very good thermal insulating properties due to the very low thermal conductivity of phenolic foam, compared with rigid polyurethane or extruded polystyrene. It can actually be 50% more effective than other common insulation materials. Its low thermal conductivity allows specified thermal performance targets to be achieved with minimal thickness of insulation. This is particularly significant where space saving is important.