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Wraptite - Royal College of Pathologists

 

The first external fully adhered vapour permeable air barrier with full BBA certification been installed as a solution for airtightness, weather protection and breathability at the new administrative headquarters of the Royal College of Pathologists in London.

The Wraptite air barrier system from the A. Proctor Group is the only selfadhering vapour permeable air barrier certified by the BBA and combines the important properties of vapour permeability and airtightness in one self-adhering membrane. This approach saves on both the labour and material costs associated with achieving the demands of energy efficiency in buildings.

Designed by architects Bennetts Associates the new £15 million eight-storey building on Alie Street in Whitechapel will become the new home for the college and features a double-height reception area, flexible office space, a library, meeting and conference rooms and a 200-seat auditorium. Gilbert-Ash has been chosen to build and manage the project which aims to reach BREEAM Excellent assessment.

Cladding contractor Windell installed the Wraptite System as an external air barrier and alternative to a traditional standard breather membrane. The use of a standard membrane would have required mechanical fixing and provided some challenges given the concrete structure of the building. As an alternative, the Wraptite self-adhesive membrane was applied externally, quickly and easily to the external envelope in continuous pieces.

George Marcantonio, the Site Manager of Windell, commented: “The application of the self-adhesive Wraptite System has proven really easy to use, and quick to apply, with no requirement to return for additional fixing or accessories. We will certainly be using the system for future projects and recommend it without hesitation.” Unlike internal air barriers, which can be complex and costly to install due to the need to accommodate building services such as electrical, lighting, heating and drainage systems, positioning an air barrier on the outside of the structural frame simplifies the process of maintaining the envelope’s integrity, as there are less building services and structural penetrations to be sealed.

By reducing the likelihood of potential failures to meet designed airtightness levels, the Wraptite System helps ensure “as-designed” performance, narrowing the performance gap between as-designed and actual energy performance.

Wraptite - Royal College of Pathologists



Wraptite Installation



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Material Properties
BIM Objects
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Material Properties

Wraptite-SA

Property Test Method Result
Roll Size 1.5 x 50 m
Thickness Calibrated Deadweight Micrometer 0.65 mm
Weight Electronic Weigh Scale 292 g/m2
Application Temperature - Air & Surface Minimum -10 C
Service Temperature -40 to 80 C
Water Penetration - Before Ageing EN 1928:2000 Method A W1 Class
Water Penetration - After Ageing EN 1928:2000 Method A W1 Class
Air Permeance EN 12114 0.01 m3/m2/hr @50Pa
Water Vapour Resistance Sd EN ISO 12572(C) 0.039 m
Water Vapour Transmission BS 3177:1959 893 g/m2/24hr
Peel Adhesion EN 1939 5.01 N/10mm
Tensile Strength - MD EN 12311-1 417 N
Tensile Strength - XD EN 12311-1 252 N
Tear Resistance - MD EN 12310-1 412 N
Tear Resistance - XD EN 12310-1 286 N
Dimensional Stability - MD EN 1107-2 0.3 %
Dimensional Stability - XD EN 1107-2 +0.1 %
Reaction to Fire EN 13501 - 1 B Class
Flexibility at Low Temperature EN 1109 No cracks at -40C

BIM Objects

File Format
A Proctor Group Ltd Steel Frame Wraptite RVT   IFC
A Proctor Group Ltd Steel Frame Wraptite And Facadeshield RVT   IFC
A Proctor Group Ltd Steel Frame Wraptite And Reflectite Tape Over Board Joints RVT   IFC
A Proctor Group Ltd Steel Frame Wraptite And Wraptite Tape Over Board Joints RVT   IFC
A Proctor Group Ltd Steel Frame Wraptite Tape Over Board Joints RVT   IFC
A Proctor Group Ltd Ventilated Timber Frame External Airtight Membrane Wraptite RVT   IFC
A Proctor Group Ltd Ventilated Timber Frame External Membrane Joint Tape Over Board Wraptite Tape RVT   IFC
A Proctor Group Ltd Ventilated Timber Frame External Over Sheathing Joints Taped Wraptite Reflective Tape RVT   IFC
A Proctor Group Ltd Warm Roof Wraptite Slate With Soft Wood Sarking RVT   IFC
A Proctor Group Ltd Warm Roof Wraptite TileWith Ply Sarking RVT   IFC

UK Availability

North East Scotland & Islands
Linda Kay
Regional Sales Manager

07817872980

Ireland
Sam Swindell
Regional Sales Manager

07875656305

Wales, Midlands & South West
Adam Salt
Regional Sales Manager

07817873124

London & South East
Josephine Matchette
Regional Sales Manager

07535450346

East England
Will Jones
Business Development Manager

07974087243

Global Availability

North America
Jeff Dibdin
International Account Manager.

07534436615

South America
Jeff Dibdin
International Account Manager.

07534436615

Europe
Jeff Dibdin
International Account Manager.

07534436615

MENA
Jeff Dibdin
International Account Manager.

07534436615

Asia
Jeff Dibdin
International Account Manager.

07534436615

Australia
Jeff Dibdin
International Account Manager.

07534436615


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