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Roofshield® - Kings College

The roofs of the magnificent historic buildings of King’s College Cambridge are being renovated and protected with the combination of beautiful Collyweston Slate and Roofshield® membrane.

Roofshield 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 re-roofing of Bodley’s Court situated alongside the river Cam is led by awardwinning architectural practice Donald Insall Associates specialists in the care, repair and adaptation of historic buildings. The buildings, which date back over 100 years needed re-slating.

For more than 600 years Collyweston slate has been protecting buildings in the region. After half a century one of the country’s oldest slate mines on the outskirts of the Northamptonshire village of Collyweston has been re-opened by Collyweston roofing specialist Claude N. Smith and its distinctive limestone slate tiles are now adorning the impressive buildings at King’s.

Donald Insall Associates specified Roofshield, the renowned pitched roof underlay, 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 and air permeable underlays use an airtight VP film layer to achieve their performance, whilst Roofshield’s patented SMS (Spunbond Meltblown Spunbond) 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. It has an extremely high degree of vapour permeability, as well as air permeability, so will still perform in conditions in which air tight alternatives will not.

The high performance of Roofshield, backed by two BBA Certificates, has been successfully used in preserving and protecting the fabric of a wide range of historic and listed buildings for more than 21 years.

Nigel Smith, Director of Claude N. Smith comments on the use of Roofshield. “Roofshield was chosen by the architects as they required materials of the highest specification for the project. It has been excellent to work with, is exceptionally strong and durable and its superior air permeability ensures comprehensive protection for the historic college buildings.”

The one year project is due to be completed in October 2019, with additional projects confirmed for the re-roofing of Christ’s College and Clare College.

Roofshield® - Kings College



Roofshield®- Kings 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

Videos

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

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Adam Salt
Regional Sales Manager

07817873124

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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

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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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