isotherm roof insulation

145mm Isotherm Ceiling Insulation is South Africa’s premium soft-touch polyester ceiling insulation. With a declared R-value of 3.32 and an installed R-value of 3.72, this 145mm thick roll provides outstanding thermal performance. Manufactured from 100% recycled PET fibres, it is completely itch-free, dust-free, non-allergenic and formaldehyde-free – making installation safer and more comfortable than glasswool. Each roll covers 6m² (5m x 1.2m) and offers excellent slight noise reduction plus self-extinguishing fire safety. Fully SANS 10400-XA compliant, it is ideal for new builds, retrofits and all South African climates, delivering major energy savings and year-round comfort.