Does it matter what the roof is made of?

Does it matter what the roof is made of?

In some areas planning laws will dictate the material to be used. If there are no such restraints your choice will be between clay, natural slate or concrete.  All of these will perform well, with concrete winning hands down on cost.

Environmental considerations are increasingly significant and there is a common misconception that clay tiles are more environmentally friendly than concrete.  In fact, the energy used to manufacture concrete tiles is a fraction of that used to fire clay tiles so their embodied energy is lower.