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Roofshield - Belfast College

The historic buildings of St Malachy’s College in Belfast have been fitted with an added layer of protection in the form of Roofshield, which has long been recognised as one of the highest performing roofing membrane solutions, providing a pitched roof underlay, which is both air and vapour permeable.

The College, a Catholic Grammar School for boys was opened on St Malachy’s Day 3rd November 1833. A major refurbishment project to preserve the heritage of the buildings was led by Belfast based Gregory Architects, with Derryleckagh Contracts of Newry appointed as the roofing contractor for the project. Gregory Architects specified Roofshield for the roof refurbishment.

The roof structures of historic buildings can be complex in nature and demand careful consideration of moisture management and condensation control. Many vapour permeable underlays use an airtight VP film layer to achieve their performance rather like a Gore-Tex jacket. While water resistant, they cannot completely prevent condensation within the roof space; meaning additional ventilation has to be introduced in order to allow air to circulate.

Roofshield’s patented air permeable structure allows high levels of airflow, in addition to the transport of moisture vapour, making the formation of condensation in the roof space virtually impossible and will still perform in conditions in which airtight alternatives will not. There is also no requirement for a separate vapour control layer.

The high performance of Roofshield, backed by two BBA Certificates & LABC / LABSS, has been successfully used in preserving and protecting the fabric of a wide range of historic and listed buildings for more than 21 years. The buildings of St Malachy’s College include a distinctive tower above the main entrance and are home to O’Laverty’s Library which contains almost 5,000 printed works, a few from as far back as the 17th century, and even a unique set of Gaelic manuscripts.

Roofshield has been used in the restoration of a number of significantly important heritage buildings including; Belfast City Hall, Derry Guildhall, Hamilton Hall – St. Andrews, Lynn Library Queens University Belfast.

Roofshield - Belfast College



Roofshield - Belfast College



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Material Properties

Roofshield

Property Test Method Result
Mass Per Unit Area EN 1849-2 185 g/m2
Reaction to Fire EN 11925-2 E Class
Water Vapour Resistance Sd EN 12572 0.013 m
Vapour Resistance EN 12572 0.065 MNs/g
Air Permeability EN 12114 34.4 m3/m2/hr @ 50Pa
Water Penetration - Before Ageing EN 1928 W1 Class
Water Penetration - After Ageing EN 1928 W1 Class
Tensile Strength - Before Ageing - MD EN 12311-1 390 N
Tensile Strength - Before Ageing - CD EN 12311-1 230 N
Tensile Strength - After Ageing - MD EN 12311-1 330 N
Tensile Strength - After Ageing - CD EN 12311-1 190 N
Elongation - MD EN 12311-1 55 %
Elongation - CD EN 12311-1 75 %
Flexibility at Low Temperature EN 1109 No cracking at minus 60C
Thickness 0.75 mm

BIM Objects

File Format
Roofshield BIM - Cold Roof, Slate, Softwood Sarking RVT   IFC
Roofshield BIM - Cold Roof, Tiles, No Sarking RVT   IFC
Roofshield BIM - Cold Roof, Tiles, Ply Sarking RVT   IFC
Roofshield BIM - Warm Roof, Slate, Softwood Sarking RVT   IFC
Roofshield BIM - Warm Roof, Tiles, No Sarking RVT   IFC
Roofshield BIM - Warm Roof, Tiles, Ply Sarking RVT   IFC

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Roofshield - Carnoustie Golf Club
Roofshield Introduction

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

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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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