For a feasibility study, your Metal Roofing breakdown is 25% labour, 75% materials and 0% fixed costs,
and your Butyl Roofing breakdown is 35% labour, 65% materials and 0% fixed costs.
Tile Roofing
Standard pattern concrete tile on 40mm x 25mm battens
Ridge, hip verge tiles
Standard pattern prefinished metal tile on 50mm x 50mm battens
Ridge hip, barge covers, etc
Sheet Roofing
Corrugated translucent glass fibre reinforced sheet
Corrugated steel roofing on timber purlins
Ribbed steel/aluminium sheeting on timber purlins
Trough Section Steel Endura or similar
Add extra for fixing to steel
Add extra for Stripping protective film
Add extra for Foam filler strip
Flashings, Downpipes, Gutters
Cover or apron flashing, sheet steel/aluminum
Metal Standing Seam Roofing
Copper 610mm wide tray with 38mm double lock seam
Underlay and Netting
50mm wire netting fixed to timber purlins
Building paper fixed to timber purlins
Synthetic Non woven underlays
Heavy duty flame retardant underlays
Membrane Roofing
2 part torch on membrane
Flashings & Dressing Down – Torch on
Flashing to ridge or hip 300mm girth
Dressing down to Eaves Gutter incl 50mm turn down & anchor strip
Dressing down to Roof outlet
Skirting – Torch on
150 mm girth
300 mm girth
600 mm girth
Butyl Rubber Roofing
1 mm thick
1.5 mm thick
Flashings & Dressing Down – Butyl Rubber
Flashing to ridge or hip 300mm girth
Dressing down to Eaves Gutter incl 50mm turn down & anchor strip
Dressing down to Roof outlet
Skirting – Butyl Rubber
dressed over fillet & turned into groove or under flashing
dressed over fillet & turned into groove or under flashing
150 mm girth
300 mm girth
600 mm girth
Downpipe
with metal brackets at 900mm centres
Sheet steel 100mm dia
PVC 100mm dia
Bend or fitting to steel or PVC
Eaves Gutter
with metal brackets, straps at 900mm centres
Standard sheet steel / aluminium
Standard PVC
Box Gutter
600mm-800mm girth
1000mm-1200mm girth
