IDF Aluminium has installed transom closers, hook locks and armoured keeps from Alpro at a new-build Asda store in Wealdstone, north London. The supermarket opened in the summer and is a 9,000-sq-ft site with ‘click and collect’ for the company’s clothing range, a bakery and rotisserie.

For the building frontage, IDF Aluminium fabricated powered pedestrian sliding doors using Alpro deadlocks. These units are available in hook and bar versions and are used widely on sliding and swing aluminium door applications in the retail and leisure sectors. The bolt is five-ply laminated stainless steel with a roll pin that provides exceptional resistance to attack from a hacksaw. All Alpro deadlocks are designed to accept standard profile cylinders or thumb-turns. 

The pedestrian doors at Asda are part of an extruded aluminium curtain walling frontage created by IDF who have also supplied sign panelling. Plant room doors include Alpro’s overhead transom closers which are a means of hydraulically controlling the opening and closing of an aluminium door. The closers are contained within the transom header bar of a door and have dual closing speed to allow flexibility, three levels of spring strength, and 90-degree hold open facility.

Keith Parry, Sales Director at Alpro, said: “Our recent leisure and retail projects feature a shopping quarter in Dorchester, Leisure World Colchester, hotel chain ibis and the Natural History Museum. These locations require discreet product design for heritage built environment areas, flexibility in holding force for our closers and of course compliance with the Equality Act (formerly the Disability Discrimination Act – DDA).”

IDF Aluminium specialises in the design, manufacture and installation of aluminium doors. The door solutions are designed for use in commercial and public sector environments where volume of traffic may be high but maintenance costs must be minimised.


The company has 30 years’ experience in the shop front and commercial door market. IDF Aluminium ensures a quality service by designing and fabricating all of its doors and shop fronts in-house with no use of sub-contractors. The client portfolio covers retail, local government, healthcare and education. IDF has worked recently with Alpro on other projects at Henry Wood House (an office development) in central London and the Philip Morant School and College in Colchester.

The Wealdstone Asda site is one of the company’s new ‘High Street’ premises which are set on main thoroughfares as opposed to retail parks. A similar store has been built in Deptford, south-east London, in line with a consumer trend of purchasing in smaller amounts more frequently from shops that are closer to home.

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