The type of roof system on a house, industrial or commercial structure or other type of property depends very much upon the age of the building and the location. During the Industrial Revolution slate was a relatively cheap commodity and millions of houses were covered with it, right up to the early 20th century. Prior to this stone slabs were often used instead; these were usually held in place with chestnut sprigs over lathes. Whilst undeniably very attractive they were very heavy, leading to roof sag when insufficiently supported, and often inefficient because of their varied sizes.
Whilst a good blue slate can give decades - even centuries - of good service, the nails and lathes that hold them in place aren't anywhere near as durable.
Many buildings, stretching back as far as medieval times, had at least some flat roofed areas. This was traditionally covedred with lead sheeting; unfortunately this is a popular target for thieves, and even when it manages to stay in place it can still crack as a result of thermal movement. From the 1960s onwards felt set in hot bitumen was a popular covering, mainly because of it's relative cheapness; this however is the only thing in favour of it! A good hot summer would inevitably lead to cracks in various areas, and mysterious leaks which were difficult to trace. The base the felt was laid on was often cheap chipboard which disintegrated when wet; the result often being a financial disaster.
Clay tiles have been popular for a long period, with many regional variations. These usually succumb to frost damage.
Finally we have the uniquitous interlocking concrete tiles which have gained widespread popularity in the UK, thanks to their relative economy, ease of use by unskilled operatives and longevity.
Whatever type of roof structure you are dealing with, we understand it! Contact us now for a quote.