How old is the building you live in?
Basically most roofs on millions of houses, that have endured and kept out the worst of the weather for decades.They didn't even bother with walls, just a bit of 2x4 with tiles nailed to one side and plasterboard on the other.
And cut & pitched roofs to make loft conversions easier!1950s. The perfect age - cavity walls, proper cement and not that daft lime rubbish, a damp proof course, clay tiles on the roof not concrete and they hadn't started all the crappifying they did in later years. Many 1970s houses were terrible.
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local