Alumasc Exterior Building Products Ltd

Introduction  Alumasc Green 
Roof systems include the broadest 
range of green roof solutions to suit 
every type of structure and to fulfil 
virtually any objective.
Alumasc can tailor-design green 
roof solutions to benefit building 
developers, owners, occupiers and 
the wider environment. With their 
positive impact on sustainability, 
biodiversity and stormwater 
management, Alumasc Green 
Roof systems can improve the 
quality of life for the building users 
and the local community whilst 
providing a longer-term financial 
payback.
Authority  Alumasc Green Roof 
components comply with 
appropriate requirements published 
in the FLL Guidelines and the Green 
Roof Organisation (GRO) Code of 
Best Practice for the UK; the latter 
being a document for which 
Alumasc was a key contributor. 
Alumasc's Quality Assurance 
management system complies with 
BS EN ISO 9001: 2008. 
Alumasc's Environmental 
Management System complies with 
BS EN ISO 14001:2004.

Alumasc Green Roof systems 
broadly fall into 4 categories:
Alumasc Extensive Green Roofs 
are low maintenance, lightweight 
systems where hardy succulents are 
planted in shallow substrate depths, 
typically 70-100 mm. They provide a 
range of ecological and 
environmental benefits, mostly 
without the need for irrigation.
Alumasc Biodiverse Roofs share 
many characteristics with extensive 
roofs. A shallow substrate, typically 
50-150 mm, is specified to provide a 
habitat suitable for desirable specific 
flora (e.g. indigenous species) and 
fauna (e.g. endangered species).
Alumasc Semi-Intensive Green
Roofs can include a greater variety 
of plants and shrubs without 
significantly increasing loads. 
Build-up height is typically 
100-200 mm.
Alumasc Intensive Green Roofs 
allow virtually limitless landscaping 
variety - creating amenity space at 
roof level (e.g. roof garden) or at 
ground level (e.g. reclamation of 
dockland). The greater depth of 
substrate (typically 150-1500 mm) 
can support a wide variety of plants 
and trees.

Alumasc Exterior Building Products Ltd

Alumasc Exterior Building 
Products Ltd
White House Works
Bold Road
Sutton
St Helens 
Merseyside 
WA9 4JG

Technical Services:
Tel:   +44 (0)1744 648400
Email:
info@alumasc-exteriors.co.uk

Website:
www.alumascgreenroof.co.uk

CPD Seminar:
Green/Garden Roof Systems
CPD Enquiries:
cpd@alumasc-exteriors.co.uk

Applications
Extensive and Biodiverse Roofs are 
ideal ecological coverings for 
lightweight roof decks, inaccessible 
roofs, flat or sloping roofs. 
Biodiverse roof specifications can 
attain BREEAM credits by creating 
specific habitats, whilst Extensive 
roofs can score credits for 
stormwater management. 

Intensive roofs are akin to domestic 
gardens or small urban parks - 
usually consisting of a mixture of 
hard and soft landscaping - either at 
roof level or, when creating 
additional amenity space at a 
redevelopment, at ground level.

Accessories  A single source 
solution includes a choice of 
Alumasc's root-resistant waterproof 
coverings and a range of trims, 
drainage outlets, inspection 
chambers, PV support frames, 
handrails and fall-arrest systems.

Alumasc Green Roofs pay back the 
initial investment by prolonging the 
life of the underlying waterproofing. 
Alumasc waterproofing warranties 
are available for 10, 15 or 25 years.

SERVICES
Alumasc Technical Services advise 
on all aspects of product selection, 
specification and application. 
Alumasc Green Roofs are installed 
by Alumasc approved contractors 
only.