Roofshield®, one of the world’s highest performing pitched roofing underlays has been
selected to provide superior quality protection for one of our most beautiful historic royal
palaces.
Hillsborough Castle is the official residence of Her Majesty Queen Elizabeth II and all
members of The Royal Family including the Secretary of State for Northern Ireland. Historic
Royal Palaces set out an ambitious program of works comprising major renovations, the
addition of two new visitors centres and a host of smaller operational buildings. Total costs
for the project were circa £20 million.
Penrose Roofing 2014 were awarded the roofing contract including all lead work and
rainwater disposals. The contract comprised of thirteen number individual roofs, with the
primary coverings ranging from new Welsh Natural Slate, Canadian Glendyne Natural Slate,
and with some roofs stripped re-using the existing natural slates, making up the shortfall
with salvaged Welsh Slate.
Architects, Consarc specified Roofshield, pitched roof underlay, to be fitted to a total of
nine of the roofs, including five new builds and four existing. The largest of the roofs was the
Lower Visitors Centre which consisted of a new build joining to existing buildings, all within
the original inner wall area.
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
airtight 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 nearly 25 years.
Gordon Penrose, Managing Director of Penrose Roofing commented on the use of
Roofshield. “Roofshield was chosen by the architects who have successfully used Roofshield
on several projects. Roofshield has also become our preferred choice of a pitched roof
membrane. It has been excellent to work with, is exceptionally strong and durable and its
superior air permeability ensures comprehensive protection for historic buildings. Another
key feature is that Roofshield is available in one-metre rolls, which makes it much easier to
handle and work with on-site, particularly in windy or breezy conditions.”
The Lower Visitors Centre was officially opened on the 9th April 2019 by the Prince of
Wales accompanied by the Duchess of Cornwall. The Prince thanked the craftspeople
involved who had brought their brilliant artisan skills to realise the vision of the architect’s
design team. The Hillsborough Castle project has been shortlisted for the UK Roofing
Awards hosted by the National Federation of Roofing Contractors (NFRC).
Roofshield has also been used in the restoration of many significantly important heritage
buildings including Belfast City Hall, Derry Guildhall, Hamilton Hall – St. Andrews, Lynn
Library Queens University Belfast, Kings College Cambridge.

Roofshield® - Hillsborough Castle

Roofshield® - Hillsborough Castle

Roofshield® - Hillsborough Castle
Brochures

Datasheets

Installation Guides

Material Properties

BIM Objects

UK Availability

Certification

CAD Details

Global Availability

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 Object - Cold Roof Slate Softwood Sarking | IFC |
Roofshield - BIM Object - Cold Roof Tiles No Sarking | IFC |
Roofshield - BIM Object - Cold Roof Tiles Ply Sarking | IFC |
Roofshield - BIM Object - Warm Roof Slate Softwood Sarking | IFC |
Roofshield - BIM Object - Warm Roof Tiles No Sarking | IFC |
Roofshield - BIM Object - Warm Roof Tiles Ply Sarking | IFC |
Roofshield - BIM Object - Cold Roof Slate Softwood Sarking | RVT |
Roofshield - BIM Object - Cold Roof Tiles No Sarking | RVT |
Roofshield - BIM Object - Cold Roof Tiles Ply Sarking | RVT |
Roofshield - BIM Object - Warm Roof Slate Softwood Sarking | RVT |
Roofshield - BIM Object - Warm Roof Tiles No Sarking | RVT |
Roofshield - BIM Object - Warm Roof Tiles Ply Sarking | RVT |
CAD Details
- Roofshield - CAD Detail - Cold Roof Tiles
- Roofshield - CAD Detail - Warm Roof Slates And Softwood Sarking
- Roofshield - CAD Detail - Triso Super 10
- Roofshield - CAD Detail - Triso Super 10
- Roofshield - CAD Detail - Warm Roof Tiles
- Roofshield - CAD Detail - Cold Roof Slates And Softwood Sarking
- Roofshield - CAD Detail - Warm Roof OSB Or Plywood Sarking
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