Details: supply and installation of roof – prefabricated insulated ppgl face panel:roof: insulated sandwich panels for roof of total thickness mentioned below exclusive of crest height of top corrugation. panel shall be made of0.50mm (+/-0.04mm) thick pre coated metal sheet on both sides of rigid polyurethane insulation. the top external facing metal sheet shall havecorrugated shape with crest. the trapezoidal shape crowns/crest height should not be less than 30mm. the pre-coated metal sheet shall be ppgl (pre painted galvalume sheet with az coating) sheet having sdp (super durable polyester) colour coat of 18 micron (min). the bottom sheet must have tongue and groove type (u shape) of 8mm x 8mm on groove side and 8mm x 12mm on tongue side. must be on lengthwise sides for joining adjacent panels. panel's bottom side ppgl sheet must also bepre-strengthened by full lengthwise stiffening with semi-circular beading of 12mm width & 3 to 4mm depth at 240 (+/-5) mm pitch. the top corrugated sheet
Sector: Tourism