EXTERNAL ENVELOPE 59
Renson at the Old War Offi ce: Historic elegance, modern air
T
he historic Old War Offi ce (OWO), a Grade II* listed neo-Baroque landmark in central London, has undergone a remarkable transformation. An example of adaptive reuse in architecture, where heritage meets modern sophistication. A pivotal element was the integration of Renson’s innovative 450 and 480 louvres. These high-performance ventilation solutions played a crucial role in enhancing indoor
air quality, energy effi ciency, and aesthetic harmony, all while preserving the building’s architectural integrity.
Balancing heritage with innovation Transforming
a historic structure into a
contemporary space demands a delicate balance between conservation and innovation. Renson’s louvres were seamlessly incorporated into the building’s facade, offering discreet yet effective airfl ow management. This ensured optimal indoor climate control without compromising the grandeur of the original design.
By reducing reliance on mechanical ventilation systems, the louvres contributed to lower energy consumption – aligning with modern sustainability standards and demonstrating how heritage buildings can be future-proofed without sacrifi cing their legacy.
www.renson.net
New Lift & Slide Hardware System from VBH
Hardware supplier VBH has introduced an exciting new hardware system to suit Sheerline Prestige aluminium lift and slide patio doors. greenteQ ClearLIFT Slim has been developed with Italian hardware expert AGB and is described by VBH as ‘the ideal hardware for slimline lift and slide patio doors.’ It accommodates sliding sashes weighing up to 250 kg as standard, with the option to increase capacity to 400 kg with the addition of just one item. ClearLIFT Slim allows the creation of sliding panels measuring up to 3.6 m wide and 2.75 m high, designed to fl ood any room with natural light. Security is provided by two sturdy hook bolts, with the option to add additional hooks in the middle and at the top of the door if required. The hooks retract into the sash when the door is open, and the striker plates are fl ush to the frame. This provides a neat fi nish to the door and eliminates the risk of items snagging on any projections into the opening. Further optional extras include a ventilation position, the Auto-Brake Closing Damper that gently slows the sliding sash down as it approaches the frame and the Opening Damper that provides a controlled opening of the door.
01634 263263
sales@vbhgb.com Fire rated air bricks – custom designed
Vectaire can now offer custom designed Fire Rated Air Bricks to ensure that every installation requirement can be met. The Fire Rated Air Brick range comprise high performance, non-combustible terminals designed for low resistance use with powered mechanical ventilation. The standard range is available in three sizes, 204 x 60 mm, 220 x 90 mm and 208 x 130 mm with 90%, 92% and 91% free areas respectively: and in 500 mm or 100 mm length. There is a choice of bezelled or non-bezelled and fi ve RAL colours (brown, white, terracotta, grey or beige) together with a complete range of accessories. They are manufactured from galvanised sheet steel and powder coated achieving an overall fi re rating of A2-s1,d0 as required by Approved Document B. They have been salt spray tested and are corrosion resistant. The 500 mm length versions are IPX3 rated for water ingress and they all have very low airfl ow resistances. They are manufactured in the UK and all designs are registered. They complement Vectaire’s MVHRs, MEVs and DMEVs. Fore more information, please contact Vectaire or visit the website.
01494 522333
www.vectaire.co.uk
ADF SEPTEMBER 2025
WWW.ARCHITECTSDATAFILE.CO.UK
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