Earthwool FrameTherm Rolls are used for the thermal insulation of external walls and warm roofs in timber frame construction and are friction fitted between studs and rafters. Earthwool FrameTherm Rolls are resilient, non-combustible, glass mineral wool products, supplied at 570mm wide to suit common timber stud centres Earthwool FrameTherm Roll 35 has a thermal conductivity of 0.035 W/mK Sized to friction fit between studs at 600mm centres Easy to handle and install with no gaps between adjacent rolls