are principally two categories of roofing materials that can
be said to be 'the crown' on a house.
sheet and Tile substrate (clay, concrete, slate etc)
oldest of these being clay tiles developed over the ages virtually
in conjunction when man was able to control fire with the clay
tile being the consequence as regards to roofing materials.
The concrete tile development arriving at a later stage in the
evolution of building materials
let's imagine that the corrugated iron sheeting was developed
at the same time, which material do you suppose would have been
tile, simply because the fasteners required to retain the sheets
in a water tight fashion would not have existed.
I think we would all agree that kiln fired tiles were used,
not because they were the best but simply because they were
the only commercial product available in the social evolutionary
there was the galvanized corrugated iron roof sheet, was limited
in size and it was used in much the same way a large tile, under
and over with an overlap on the side
you look at cost and speed, a metal roof is constructed faster
than a tile roof. Both materials have their respective advantages
steel roof sheeting comes in continuous lengths to suit the
roof, the most common being the corrugated profile, whereas
tiles are much the same size as they have always been albeit
that their contour profiles are more numerous and are considered
to offer greater initial aesthetic choice.
unfortunate aspect regarding colorbond is the surface integrity
of their colours.
Within two years the surface integrity begins to dissipate and
begins to acquire a chalky finish, which can be deemed acceptable,
if it's all the same batch but not so great if dissimilar products
(guttering eg) of the same colour are used in the construct.
tile roof absorbs and attenuates (stops) sound whereas a steel
roof unfortunately transmits sound much like a drum.
heat transfer, a steel roof does not store heat and sheds any
heat load the minute the sun sets, whereas a tile roof absorbs
and retains heat load for a longer period of time. This can
be considered as being beneficial with a tile roof during winter
which can be offset by efficient roof ventilation during summer.
many of the shortcomings can be nullified with the use of insulative
and absorptive materials so the question becomes more relevant,...which
is the better material to use?.
would say steel is
lighter, tighter, cleaner, flashings are simpler to apply. One
needs to be mindful that the trades aware of the traditional
and the proven modes of flashing techniques do not exist any
more and there is a need to consider future maintenance as may
to ventilation, whether it be roof ventilation or room ventilation,
the versatility is better with clay or concrete tile as opposed
to steel, as a clay, concrete tile roof is easily repaired via
replacement, and as stated previously, has better sound attenuation
qualities particularly when it rains.
a steel roof is it's continuous length and suitability to roof
pitches under 12 degrees