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One Hyde Park, London

  • Client: Project Grande (Guernsey) Limited
  • Architect: Rogers Stirk Harbour + Partners
  • Construction Manager: Laing O’Rourke Construction Limited
  • Scope of Works
  • Insulation: 10,200m² Kingspan Kooltherm K10 Soffit Board & Promat TL Board
  • Promat DURASTEEL®: 1,500m² Promat DURASTEEL® Barriers
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One Hyde Park is a major residential and retail development located in Knightsbridge, London. Comprising of 86 apartments and duplexes, including 4 penthouses, One Hyde Park is one of London’s most opulent developments, setting a new benchmark in quality and design for residential schemes.

Construction work on this £1.0bn development began in early 2007, however it was not until May 2009 that the insulation works commenced. Working with its supply chain, Sharpfibre were able to offer a solution for the insulation works that satisfied both the clients’ very demanding acoustic and thermal specifications, whilst avoiding a number of other construction constraints.

As part of the design criteria it was necessary to provide extremely high acoustic sound reduction values between the car parking area, the two cinemas and the apartments themselves.  Added to this was the requirement to provide high performing thermal insulation between the car park areas, which are considered as semi-exposed environments, and the warmer heated internal environments of the dwellings.

In consultation with its in-house acoustician, Sharpfibre’s design team developed a hybrid Insulation system comprising of a mineral fibre infill layer, high performance Phenolic foam and a dense hard facing cover layer to protect against impact whilst providing an aesthetically pleasing finish. With the main structure of the building constructed in reinforced and post-tensioned concrete, it was necessary to ensure that the numerous fixings used to support the Insulation system, did not damage the post-tensioning tendons or reinforcement steel that would be present in the concrete. Working with fixings specialist Ejot, a solution was developed that enabled to the Insulation system to be fastened back to the concrete structure first time, preventing damage to the concrete structure or the face of the insulation boards.

During the 54 weeks on site, Sharpfibre employed over 25 operatives to ensure that the critical acoustic and thermal specification demanded of such a high end design was achieved within the construction programme, allowing the building to be handed over and fitted out, ready for its grand opening in January 2011. 

Product Information

With building designers and owners facing increased energy costs and more stringent regulations, solutions are now available to meet the highest demands of current building legislation.  These solutions not only include the thermal performance but also associated requirements which may include acoustic and fire protection.

Thermal Insulation
The installation of phenolic, mineral wool or glass fibre insulation boards satisfies the thermal insulation performances currently set out in Part L of the Buildings Regulations. Phenolic materials offer the thinnest solution, whereas mineral wool or glass fibre materials offer a lower cost option.

Various finishes are available, including plain facing, or an aluminium foil face, where the finish is more demanding. A calcium silicate facing board is available with these materials and is particularly suited where the insulation could be exposed to impact.

Fire Protection
Mineral wool and glass fibre insulations have been tested for the fire resistance to BS EN 1363-1: 1999 and provides up to 240 minutes fire protection to a concrete soffit.

Both of these products are non-combustible and achieve a reaction to fire classification of A1. By applying the calcium silicate facing board to the phenolic insulation, similar properties can also be achieved.

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