roof2009-08-16 03:563.3 MB
... flexibility of metal, they can be manufactured to lock
together, giving durability and reducing assembly time.
f. Mechanically seamed metal. Long life. High cost,
suitable for roofs of low pitch such as 0.5/12 to 3/12 pitch.
g. Concrete, usually reinforced with fibres of some sort.
h. Asphalt shingl ...