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Wraptite - Connolly Hospital, Dublin

The Wraptite® external air barrier system from the A. Proctor Group is achieving an efficient airtightness solution at two new-build extensions to the Connolly Hospital in Dublin. The project consisted of two phases, a new laboratory building in phase one, with a brand new accident & emergency facility constructed in phase two.

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

Air leakage through cracks, gaps, holes and improperly sealed elements such as doors and windows can cause a significant reduction in the performance of even thermally insulated envelopes, in some cases reducing their effectiveness by up to 70%. In addition, unmanaged or uncontrolled airflow can act as a carrier for moist air, drawing it in from the outside or pushing it from the inside outwards, into walls, ceilings and roofs. The impact of this uncontrolled moist air movement can have a detrimental effect on the life of the building and the health of its occupants.

The high vapour permeability of the Wraptite air barrier allows the substrate beneath to dry quickly and moisture vapour to escape and reduces the likelihood of mould, mildew, condensation, timber distortion and metal corrosion.

Designed by architects MCA Dublin, award-winning drylining contractors McLaughlin Taylor of Donegal installed the Wraptite System as an external air barrier and alternative to a traditional standard breather membrane. The use of conventional membranes would have required mechanical fixing and added to the installation time. As an alternative, the Wraptite self-adhesive membrane was applied externally, quickly and easily to the external steel frame in continuous pieces.

Gio Fusco of McLaughlin Taylor commented: “The application of the self-adhesive Wraptite System was quick and easy to apply in a single application, with no requirement to return for additional fixings. We used Wraptite for both phases, and the air permeability test results were consistently excellent with both buildings achieving a rating of close to or just below 2m3/hm2.”

Internal air barriers can be complex and costly to install due to accommodating 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, with fewer 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®



Wraptite® helps Dublin hospital promote healthy buildings



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Material Properties
BIM Objects
UK Availability
Certification
Global Availability

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
Wraptite - BIM Object - Steel Frame RVT   IFC
Wraptite and Facadeshield UV - BIM Object - Steel Frame RVT   IFC
Wraptite - BIM Object - Steel Frame With Reflectite Tape Over Board Joints RVT   IFC
Wraptite - BIM Object - Steel Frame Wraptite Tape Over Board Joints RVT   IFC
Wraptite - BIM Object - Wraptite Tape Over Board Joints RVT   IFC
Wraptite - BIM Object - Ventilated Timber Frame With External Airtight Membrane Wraptite RVT   IFC
Wraptite - BIM Object - Ventilated Timber Frame With External Airtight Membrane And Wraptite Tape Over Board Joints RVT   IFC
Wraptite - BIM Object - Warm Roof Slate With Softwood Sarking RVT   IFC
Wraptite - BIM Object - Warm Roof Tile With Plywood Sarking RVT   IFC

UK Availability

North East Scotland & Islands
Linda Kay
Regional Sales Manager

07817872980

Ireland
Sam Swindell
Regional Sales Manager

07875656305

Midlands
Adam Salt
Regional Sales Manager

07817873124

South London & South East
Josephine Matchette
Regional Sales Manager

07535450346

Wales & South West
Marc Blackie
Technical / Regional Sales Manager

07968215 755

North London & East England
Ben Cremer
Technical / Regional Sales Manager

07768817733

Head Office
The Haugh

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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For any building to have an energy efficient, healthy, moisture free building envelope there is a clear need to manage the balance of Heat, Air and Moisture movement (HAMM) throughout the building’s life cycle from design, construction, completion and use.

 

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The A.Proctor Group operates out of The Haugh in Blairgowrie, which has belonged to the family since the early 1900’s and now acts as the Head Office for the Administration departments and Customer Services.

 

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