The Protec system from Polyroof was chosen for the new Highwood apartments in Horsham due to its proven performance across all flat roof and balcony applications. The development consists of over 1,100m2 of mansard roof and balconies that required a high-performance and durable waterproofing finish.
The finished Protec system membrane is exceptionally tough and hardwearing, greatly reducing the risk of damage from other trades after the system has been installed. Protec forms a seamless membrane and flexible membrane and the full system can be installed in hours, rather than days, keeping labour costs and disruption to a minimum.
A key requirement was a highly efficient thermal performance for the mansard roof area, but the height of the insulation required to achieve the U-Value presented a design challenge. To ensure that condensation would not be an issue, Polyroof carried out thermal calculations and condensation risk analysis which showed the dew point would not be reached within the roof build-up.
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