Polyroof's 185 system was specified for this extension to a private residence in North West England. Being over a kitchen, the design of the orangery roof had to be functional as well as having a seamless and durable waterproofing solution that would look stylish and modern, and could be incorporated with the rest of the building’s design.
A key feature to the design of the roof was a large glass skylight that the architect designed to be level with the surrounding roof, creating a visually striking and modern look to the roof. However this presented a challenge as an upstand to the rooflight was still required to ensure a fully weatherproof detail could be formed.
The solution was to create a gully around the rooflight, a 150mm upstand was created to the skylight. The gully incorporated 50mm PIR insulation within a warm roof design, which was demonstrated through condensation risk analysis to be sufficient to prevent a “cold spot” whilst also enabling the target U-Value for the whole flat roof to be achieved.
The roof surface was then made level to the skylight through the addition of decorative paving tiles on support pads.
View 185 GRP (Fibreglass) Roofing System Product Entry