32


EXTERIORS


Introducing Nullifi re FZ400: The Pioneering ‘Movement-Tested’ Fire Stopping Solution


N


ullifi re, a leader in passive fi re protection innovation,


unveils FZ400 – a cutting-edge fi re


stopping product designed to accommodate movement, while maintaining the integrity of compartmentation.


Powered by patented GXT Technology, FZ400 provides the necessary continual relief of fatigue on fi re stopping seals under defl ection stress and protects service penetration seals with outstanding fi re performance and movement-resilience. The FZ400 has been rigorously tested to EN 1366-3/4, achieving up to two hours fi re rating after undergoing cyclic movement, proving its effectiveness in real- world scenarios where structural movement is inevitable. Using Nullifi re’s pioneering ‘Movement


Test,’ developed with the support of Warrington Fire, the FZ400 was subjected to a groundbreaking procedure that replicates ceiling defl ection. A wall was moved up and


proudly


resistant fi lm provides a cold smoke seal. This provides both fl exibility and excellent fi re stopping properties.


The results were outstanding: No ripping, cracking, or fi bre migration; Maintained a secure, air-tight fi re seal; Up to two hours of fi re resistance maintained. Hannah Eyres,


technical manager at


down by 30 mm more than 50 times over a two hour period, then placed in a furnace to assess performance post-movement. FZ400 is a graphite impregnated open cell foam with a highly expansive char when exposed to heat. The water


Nullifi re, explained “Our Movement Test provides a complete framework for testing how GXT Technology adapts to real-life building pressures. We’re proud to share a test that reinforces our drive toward data- driven solutions and gives architects and contractors complete confi dence in FZ400. Feedback has been very positive. Architects and Main Contractor clients demand data driven solutions so the development and success of this test will be well received in the Construction Industry.”


hello@tremcopcg.com www.tremcocpg.com/en-gb


New guidance helps housebuilders combine in-line solar PV and air permeable underlays


N PV together with Proctor Air®


ew guidance from Proctor Group means housebuilders can now use integrated (or in-line) solar , confi dent


that they are meeting all relevant technical requirements – including the NHBC’s 2024 Technical Standards, with an alternative BBA approved solution which negates the requirement for double battening. Backed by leading moisture experts in the UK and Europe, the guidance is also refl ected in an update to Proctor Air’s BBA certifi cate. That means designers and specifi ers can follow the guidance in the knowledge that it has been assessed by an independent third party. As an air permeable, low resistance (APLR) membrane, Proctor Air reduces the risk of issues occurring in roof spaces due to poorly installed vapour control layers or ventilation. And because it provides a more uniform fl ow of air than standard ventilation solutions, it means the roof requires no other


ventilation measures. Proctor Air has proved a popular solution since its launch. However, an update to the NHBC Technical Standards created confusion around the use of in-line solar PV with APLR membranes. Housebuilders and developers have therefore been reluctant to specify the two together, despite wanting to use APLR products. With rooftop solar expected to be made compulsory on new-build housing, the adoption of PV panels will only intensify


as specifi cations adapt to the lower carbon emissions required by the Future Homes Standard. And as those same homes become even better insulated and more airtight, they will rely on the performance of air permeable membranes to help reduce condensation risk in loft spaces. To overcome the confusion, Proctor Group undertook research to investigate the issue, engaging Glenfeulan Consulting to undertake modelling using RoofCond software. The renowned Fraunhofer Institute then validated the reasearch fi ndings and agreed with the conclusions.


Equipped with a more thorough understanding of air and moisture movement through


pitched roof coverings,


Group has developed a recommendation for pitched roof specifi cations featuring in-line solar PV and Proctor Air.


01250 872 261 proctorgroup.com/products/proctor-air Proctor


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