Insulation Board for Sarnafil Roofing System
The insulation used for Sarnafil Roofing System as shown in roof detail in drawing no.
RF-602 shall be as follow:-
Extruded Polystyrene Foam Insulation Boards (EPS), manufactured through a
continuous extrusion process, EPS Insulation Board possess a rigid closed cell structure
with unique properties such as low thermal conductivity, high resistance to water
penetration and high compressive strength. Thickness of XPS insulation board is
25mm at 32 kg/m3 density. Installation of XPS board then loose lay of geotextile then
installed Sarnafil PVC membrane over geotextile and XPS insulation board. The
contractor is to guarantee that the insulation, waterproofing and top layer are
sufficiently fixed to the building so there is no risk of insulation, waterproofing and top
layer to be lifted from the building due to hard wind or the like.