Daylighting takes off at Heathrow C

urtainwall Engineers and Kalwall distributor Structura has recently completed a challenging but fascinat-

ing ‘replace and refurbishment’ project at Heathrow’s T4. This in conjunction with Structural Engineers Webb Yates for a scheme designed by Pascall+Watson architects. The project proved so successful that main contractor Balfour Beatty named Structura as their ‘Most Promising New Supplier 2018’. Replacing ageing glass rooflights originally installed in the 1980’s, 1750 square metres of

Kalwall Skyroof cladding is being used above the Terminal’s International Departure Lounge and check-in desks. Fully ASAID compliant with regards to blast performance, Kalwall improves the solar control and insulation to the space below. In this project, its inherent strength in a lightweight frame means the existing substrate could be adapted and reused - saving £7m in project costs and more than a year from the build programme. The whole retrofit was completed externally in ‘engineering hours’

using a bespoke moving scaffold, meaning there was no disruption to the inside of the building. Kalwall offers complete line-of-sight protection, maintaining privacy for the security screening area and departure lounges while bathing the interior with diffused daylighting, regardless of the weather. Apart from providing the visual protection, its inherent strength and heavy-duty impact resistance make it ideal for secure locations such as this. It offers the highest protection in terms of wind-borne debris and resistance to impact, abrasion and point loads. Not only is it also safe to walk on but Kalwall achieves S:AA (BS 476 part three) and Broof(t4) to EN 13501 part five for external fire performance. The exterior face is colour stable and

includes a UV resistant, self-cleaning surface. This means that normal rainfall helps to keep the surface free of dust and dirt while at the same time retaining its original colour during the weathering process.

01233 501 504

Protect Membranes used for pioneering offsite social housing scheme

housing project in Banbury on all external walls, to provide enhanced thermal efficiency and deliver a low U-value, contributing to the environmental performance for the overall construction. Cherwell District Council (CDC) required a turnkey solution to provide high quality, affordable housing and turned to offsite construction specialist F1 Modular Limited to design and build the properties, developed on the former site of Banbury Ambulance Station. Appointed via the LHC’s New Housing


and Associated Works (NH1) procurement framework, F1 Modular’s design challenge comprised of manufacturing 26 ensuite rooms with shared facilities and two bedsit properties all contained within six shared houses. Working closely with CDC’s in-house design team, F1 Modular built a series of modules using volumetric construction

rotect’s reflective TF200 Thermo insulating breather membrane has been used throughout a six property social

principles in strict factory controlled and weather-tight conditions. Delivered on budget and requiring

reduced time on site thanks to precision offsite manufacture, the modules were installed with Protect’s BM TRADA certified, TF200 Thermo membrane fixed to the outer structure, providing not only low emissivity but also temporary protection against wind damage, weathering and water penetration, whilst also ensuring the passage of water vapour into the external cavity between the external masonry and the outer wall, significantly reducing the risk of condensation. Protect’s range of wall, ceiling and floor construction membranes together with its roofing underlays and accessories provides a comprehensive solution to the modular build sector. In particular, Protect construction membrane products with reflective technology help deliver thermal efficiency benefits to meet low


The social housing scheme at Banbury for Cherwell District Council features Protect construction membranes.

target U-values and ensure compliance with relevant Building Regulations. For details of how Protect products can

be incorporated into modular builds, whether residential and commercial, please visit

0161 905 5700



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