Sisalation 420 definition
Sisalation 420 or equal approved heavy industrial grade aluminium foil based insulation 4 Insulation laid taut over purlins (at approximately 450mm centres) and fixed concurrent with roof covering including galvanised steel straining wires m2 1,570
Examples of Sisalation 420 in a sentence
Specification for non-visible roof insulation material: Super Sisalation 420 RSA or equivalent approved reinforced reflective aluminium foil (heavy grade) laid on 1,6 mm diameter galvanised straining wires at 300 mm centres to the manufacturer’s specification.