Alumasc Exterior Building Products Ltd

Introduction  Alumasc flat roofing 
and waterproofing systems include: 
Derbigum 
Euroroof Rapid 
Hydrotech
Euroroof Impermax
Firestone RubberGard

Firestone UltraPly™   
Authority 
BBA (British Board of Agrément) and 
ETA (European Technical Approval) 
certifications are as follows:
Derbigum 
BBA: 86/1593/C  
Hydrotech
BBA: 90/2431 and 90/2432  
ETA: 05/0152
Euroroof Impermax 
BBA: 11/4836
ETA: 06/0263
Firestone RubberGard

® 

BBA: 89/2216
Firestone UltraPly™ 
ETA: 07/0262

DESCRIPTION
Derbigum dual-reinforced, 
APP-modified bitumen roofing 
membranes with enhanced 
performance properties (flexibility, 
durability, fire ratings) allow life 
expectancies exceeding 30 years.
Euroroof Rapid cap sheets and 
base layers are designed to 
transform the process of working with 
traditional bituminous membrane 
systems, speeding up installation 
time without compromising on the 
long term performance.
Hydrotech MM6125 structural 
waterproofing systems have been 
successfully used for over 50 years.
A special formulation of modified
bitumens, synthetic rubbers and 
antioxidants combined with 
reinforcement results in a tough yet 
flexible self-healing monolithic 
membrane with guaranteed 100% 
bond to a properly prepared concrete 
substrate.
Euroroof Impermax cold-applied 
liquid polyurethane forms an 
elastomeric, seamless and 
self-levelling waterproof membrane. 
A range of primers, accelerants and 
reinforcements ensure Impermax 
can be applied to most substrates. 
Firestone RubberGard

 single-ply 

membrane, manufactured from 
EPDM without the use of plasticizers 
or flame retardants, is durable, has 
excellent resistance to UV rays and 
is flexible to accommodate building 
movement and temperature change.
Firestone UltraPly™  TPO is a 
proprietary thermoplastic polyolefin. 
The scrim-reinforced membrane 

Alumasc Exterior Building Products Ltd

combines weatherability of rubber 
with the heat weldability of a 
thermoplastic in a highly flexible 
sheet. Available in a choice of 
colours.

Applications
Derbigum membranes are suited to 
warm roofs (on metal, concrete or 
plywood decks) and inverted roofs 
(on concrete decks).
Derbigum Built-up systems, capped 
with Derbigum Mineral or 
Derbigum Black membranes, have 
a choice of base layers to provide a 
high performance roofing solution.
Derbigum Single Layer systems 
combine proven durability with speed 
and ease of installation. Options are 
available for flame-free application, 
high speed spray installation and 
mechanical fixing.
Euroroof Rapid systems provide 
fully adaptable specification options 
for overlay refurbishment solutions or 
a range of warm roof build-ups. 
Euroroof Rapid vapour barriers and 
underlays are highly flexible and can 
be applied in a choice of three 
methods: Thermo-Adhesive, 
Self-Adhesive and Torch-On 
depending on project requirements.
Hydrotech is used as a structural 
waterproof covering to any horizontal 
or vertical structure (e.g. protected 
roofs, plaza decks or podiums, 
substructures, green roofs, water 
features and access roadways). The 
Hydrotech system consists of two 
coats of squeegee-applied hot melt 
rubberized bitumen, with polyester 
fabric reinforcement between. The 
membrane is laid on to surface 
conditioned concrete. A Hydrogard 
protection layer can be specified to 
suit the intended use of the deck.
Euroroof Impermax cold-applied 
liquid polyurethane systems can be 
used in warm roof build-ups or simply 
as a waterproof covering for 
refurbishment overlays or inverted 
build-ups. Reinforcement options are 
available to suit the intended traffic 
above the waterproofing.

All of the above roofing systems are 
compatible with a range of Alumasc 
roofing accessories, including 
rooflights, insulation and drainage 
outlets.

 EPDM 

commercial roofing systems offer a 
variety of installation options to meet 
the most demanding rooftop 
challenges for both renovation and 
new build applications, including 

Alumasc Exterior Building 
Products Ltd
White House Works
Bold Road
Sutton
St Helens
Merseyside WA9 4JG
  
Tel:   +44 (0)1744 648400
Email: info@alumasc-exteriors.co.uk

Website:  
www.alumascwaterproofing.co.uk

CPD Seminars: 
Structural Waterproofing Systems 
Criteria for Flat Roofing 
CPD Enquiries: 
cpd@alumasc-exteriors.co.uk

ballasted, mechanically attached and 
fully adhered systems.

 TPO 

lightweight, flexible, scrim-reinforced 
membranes provide proven 
performance in most commercial 
roofing applications. Installation 
options for both renovation and new 
build applications include ballasted, 
inverted, mechanically attached and 
fully adhered systems.

®

 Registered Trademark

ECONOMICS
Alumasc offers a comprehensive 
choice of roofing system warranties 
covering both products and 
installation.  Warranties up to 25 
years are available.

SERVICES
Alumasc Technical Services offer 
comprehensive technical and 
specification support.  Installation is 
by Alumasc Approved Contractors 
only.