Why torch on
Multi layered flat roofing systems is traditional roofing aka High performance felt. laid with a breathable membrane which allows any trapped gases and moisture decking to disperse. The second layer is a underlay which is torched on with a separate apron edge. and finally a cap sheet with a separate apron. main benefits are that the system has multi layers of waterproofing. Aldersbrook in London.
This is usually the most cost effective way to recover the roof dependent on the grades of the felt and manufacturer. these systems have varied lifespans and can be tailored to budget.
these types of systems typically come with a 10 to 20 year guarantee dependent on system manufacturers.
we have been fitting this type of system for over 29 years previously we used to use the traditional roll and pour method and have followed the technology advances and have worked with some of the brand names becoming approved contractor status in installing there systems. We have been working with Delta, Nordebitumi now Donasa and Coppernit in installing the various waterproofing systems and products.