A key consideration when looking at a flat roof for your home is drainage. Without the angle of a low or steep-sloping roof rainwater won’t have gravity on its side to keep your roof clear.
Draining water off any roof is vital to its upkeep. On flat roofs there is a danger of ‘ponding’ and, if a roof is poorly designed, silt deposits can gather. These can put pressure on the roof membrane and in winter can even freeze causing serious damage and even collapse.
There’s no reason why choosing a flat roof for a new home or extension needs to be a hassle though – so long as there is an efficient draining system in place. Water needs to be able to run off easily and find its way down guttering to prevent this ponding and silt deposits. Architects, designers and builders need to consider how the roof system will cope in the event of extreme rainfall and if a storm hits can water drain away quickly?
Flat roof drainage systems can be just as effective as those on sloping roofs and standards are in place to protect homeowners. Dedicated systems have been specifically designed to meet the challenges of draining flat roofs allowing developers and roofers to be bold and different when building new or improving existing homes.