Lifetime costs: roofing | Features

Average prices for cash buyer in $/tonne
Metal	Jul-03	Jan-04	% increase
Aluminium	1436	1606	11
Copper	1709	2422	41
Lead	514	757	47
Tin	4732	6477	37
Zinc	825	1016	23

Roofing Costs
Description	unit	range (£)
Metal profiled/flat sheet roofing
Medium-quality coated aluminium or steel trapezoidal built-up roofing system, sandwich liner system, vapour-control barrier and insulation	m2	35–45
Composite fully insulated coated aluminium or steel trapezoidal roofing system	m2	50–75
Tiling/slating (including underfelt and battens)
Concrete roof tiles	m2	35–45
Clay roof tiles (machine made)	m2	40–55
Man-made slate roofing	m2	50–65
Natural slate roofing	m2	100–120
Metal sheet coverings (including insulation, on breather membrane or vapour barrier)
Aluminium roofing with standing-seam joints	m2	55–80
Zinc roofing with standing-seam joints	m2	65–90
Copper roofing with standing-seam joints	m2	70–95
Stainless steel roofing with standing-seam joints	m2	70–95
Milled-lead code five, roofing coated with patination oil and with lead-rolled joints	m2	90–110
Asphalt, built-up and single-ply roofing (including insulation and vapour-control barrier)
Two coats asphalt roofing, 20 mm thick, including felt underlay	m2	55–75
Single-layer polymer roofing membrane	m2	65–75
High-performance bitumen felt roofing system	m2	70–80

Roof elements
	Average rate (£/m2)
Secondary schools	103
Secondary schools – specialised
teaching blocks	110
Sixth form/tertiary colleges	143
Universities	180
Universities – specialised
teaching blocks	152
Colleges	120
Colleges – mixed facilities	108
School/college/university libraries	153
General hospitals, GP hospitals,
cottage hospitals	132
Hospital – mixed specialist facilities	125
Ward blocks	160
Offices	137
Banks/building society branches	134
One-off housing, detached
(three units or less)	171

Roofing cost model
	Cost of coverings	Supporting structure	Typical life	Strip coverings	Scrap value	Cost to replace	Repair cost per year	Total cost to year 60
	£/m2	£/m2	years	£/m2	£/m2	£/m2	£/m2	£/m2
Metal – pitched
Copper, half hard, 0.6 mm thick	61	87	100	3	11	53	0.28	164
Aluminium, PVF2
colour-coated, 0.7 mm thick	48	87	30	3	2	49	0.35	253
Lead, code 5, 2.24 mm thick	91	98	85	3	10	84	0.28	206
Stainless steel, 1.4401 grade,
0.4 mm thick	60	87	100	3	6	57	0.28	164
Zinc, 0.7 mm thick	56	87	30	3	3	56	0.43	281
Non-metal – pitched
Tiles, clay, machine-made	34	98	35	4	0	38	2.26	305
Tiles, clay, handmade	67	98	35	4	0	71	3.53	447
Tiles, concrete, interlocking	25	98	35	4	0	29	2.61	309
Tiles, concrete, plain	46	98	35	4	0	50	2.16	323
Welsh slate	70	98	100	4	0	74	2.37	310
Non-metal – flat
Single-ply	54	111	20	6	0	60	0.9	400