When deciding to refurbish a flat roof, it is important to consider the drainage when selecting a suitable solution. Over the years, there have been substantial improvements in flat roof technology. However, there are still many buildings suffering as a result of poor design.
As such, failing internal drainage or cavity wall insulation places a greater emphasis on selecting a roofing system that is capable of dealing with these issues. Therefore it is important to consider whether a flat-to-pitched conversion is a cost effective option.
The roofs that typically get converted are those of flats and schools, whose internal drainage systems have failed. The resulting refurbishment required to replace the drainage systems can be costly and intrusive, often resulting in the need to relocate occupiers.
A well designed flat-to-pitch conversion provides external drainage and overcomes the need for intrusive refurbishment, whilst delivering a long-term waterproofing solution that can often last for the lifespan of the roof, whereas there is a likelihood that a well designed built-up flat roofing system may require renewal during this time.
Flat-to-pitch conversions provide minimum disruption to occupants during installation and also allows for insulation to be upgraded by laying it over the existing roof, in the void created by the flat-to-pitch system.
Flat-to-pitch conversions add a proposed load to an established roof and as such all materials used are lightweight. RoofTech always advise that a structural calculation is undertaken to ensure that the existing roof can take the additional load.
If you are considering refurbishing a flat roof and wish to discuss your options, contact RoofTech and one of our surveyors would be pleased to undertake a free survey of your roof and advise you accordingly.