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Bernard Weatherill House, Croydon

  • Client: Croydon Council Urban Regeneration Vehicle (CCURV)
  • Architect: EPR Architects
  • Construction Manager: Focchi Group
  • Scope of Works
  • Fire Stopping and Penetration Sealing: 4,100m Hilti CFS-SP-WB Speedspray Firestop System
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The Croydon Council Urban Regeneration Vehicle (CCURV), is an innovative 50/50 joint venture partnership between John Laing and Croydon Council to regenerate a range of key sites across the London Borough of Croydon. The first deal of its kind, it is a 28-year partnership into which Croydon Council invests land and John Laing equity.

Since its formation in 2008, CCURV has successfully delivered two high profile schemes (Bernard Weatherill House and the Waddon Housing and Leisure Scheme) which have not only provided new and improved facilities for the Croydon community but also created employment and training opportunities for local people, skills development with schools and colleges and opportunities for local companies to enter the supply chain.

Bernard Weatherill House (BWH) is CCURV’s corner stone project. The development is a 240,000 ft² BREEAM excellent office building designed to house Croydon Council and a range of local service providers. Building contractor Sir Robert McAlpine began construction on site in March 2010 and appointed Italian facades specialist, Focchi Group to carry out the design and installation of the building envelope.

Working in conjunction with firestopping manufacturer Hilti (GB) Limited, Sharpfibre began consultation on a fire and smoke seal solution between the new glass and aluminium façade and the concrete structure. As glass, aluminium and concrete all have different movement properties, a solution was required that could accommodate the expected movement during the building’s design life and more importantly, any movement during a fire. Failure at this junction can allow fire that has broken out in one particular area or floor, to pass between levels, compromising the building’s fire compartmentation strategy.

In order to prevent the failure of the fire and smoke seal at this critical junction, Hilti CFS-SP-WB Speedspray Firestop system was adopted by the design team as the right solution.  Hilti CFS-SP-WB Speedspray Firestop system is a spray or brush applied fire-rated mastic where maximum movement is required. With its water based formulation it is easy to apply with good adhesion even at low temperatures. As well as performing as a fire and smoke seal, the Hilti CFS-SP-WB Speedspray Firestop system can assist in maintaining the challenging and often very demanding acoustic properties of the building envelope.

During the period the works were carried out, Sharpfibre is proud to continue its strong support and ties with local communities, by helping and signing up to the client’s initiative target to support work placements for young people at local schools and colleges as well as employ 10% of the workforce through local recruitment.

Product Information

Fire Stopping and Penetration Sealing
Penetration sealing systems are a fundamental requirement of the fire safety design in buildings. Often a neglected part of the building’s fire protection and installed by non-specialists they are nevertheless vital in maintaining compartmentation and preventing the spread of fire and smoke. Building Regulations Approved Documents and LPCB Design Guide recognise that the quality of the installation of fire stopping and penetration sealing is crucial to the performance of any fire stop seal.

These systems provide cost-effective solutions and compliance with current legislation. Effective penetration sealing prevents the passage of smoke, toxic gasses and fire through gaps around services in walls, partitions and floors as well as enhancing acoustic performance and air sealing properties.

Fire Barriers
Fire barriers systems are slabs of high density rock wool with a white endothermic, ablative coating designed to stop the spread of fire through openings in fire resistant walls or floors. Fire barriers provide an enhanced acoustic performance and up to 240 minutes fire protection.

Fire Compounds
Fire compound systems are gypsum based with thermal and acoustic properties, which provide a fire seal around service penetrations in walls and floors. Fire compound systems are particularly designed for use where a loading of the penetration is applicable, such as service risers and plant room floors. Fire compounds are quick setting to provide a smoke seal offering up to 240 minutes fire resistance.

Intumescent Sealants
Intumescent Sealant systems are water based acrylic intumescent or silicone based fire protection sealants. Adhering to most types of surface, which when cured form a non-hardening seal; preventing the passage of smoke, toxic gases and fire for up to 240 minutes fire protection.

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