Single - Skin Insulated Construction
Single-skin insulated roof and wall construction comprises of roof and wall cladding with metal building roof insulation used underneath the cladding as underdeck insulation. The metal building insulation is rolled over the purlins or girts & the external cladding SRS/ SWS are then fixed to the secondary framing through the insulation. Only the vapour barrier is visible from inside of the building.
Double - Skin Insulated Construction
Double — skin insulated roof construction comprises of internal liner panels directly screwed to the secondary framing, sub-girts screwed through spacer blocks and liner sheet to the purlins below. Metal building roll insulation with vapour barrier is laid over the sub-girts and finally the outer panel is screwed to the inside face of girts with the external sheet and insulation fixed on the outside of the building.