Alumasc’s carbon dioxide neutralising roofing helps NTU stay one of UK’s most environmentally friendly universities
Alumasc Derbigum Olivine roofing absorbs and neutralises CO2
on contact, as it falls in rainwater. This ground-breaking technology has been
used in the recent redesign and refurbishment of Nottingham Trent University’s Clifton
Campus Library, which now features over 1000m2 of Olivine, providing
a waterproof, BBA approved roofing solution.
As one of the UKs most environmentally friendly universities,
NTU has a reputation to uphold. The UK market for green construction projects
has grown significantly in the last 10 years and is poised to grow further in
the next three. As society’s collective environmental conscience grows more
aware, developments which design with environmental concerns in mind have become
more revered. This seems to be the case increasingly so with students and
As well as teaching the effects of positive actions towards
the environment, NTU has decided that the best way to impress the importance of
their students is to demonstrate it in their campus buildings.
& J Roofing installed the membranes, after it was identified as the most
appropriate waterproofing solution that would also offer the sought after added
environmental benefits. As a bituminous felt system, Derbigum Olivine is 40%
recycled, therefore from an environmental point of view, it has an edge over
many competitor brands.
Derbigum Olivine roofing contains a naturally occurring mineral upper layer
that irreversibly neutralises CO2 that falls in rainwater, on
contact,” explains Ben Green, Divisional Marketing Manager for Alumasc WMS and
Alumasc Roofing. “When the rainwater rolls off the roof and eventually reaches
the drains, it’s carbon-free. The olivine grains decrease in size with each
reaction, however are large enough to last 30 years plus before having
completely reacted. It’s construction industry science at its finest!
“The membrane itself is guaranteed for 40
years, carrying the longest British Board of Agrément (BBA) certificate in the
UK. It’s high melting point ensures membrane stability in the hottest
weather whilst the polyester/glass fibre reinforcement provides high tensile
refurbishment also included the specification of Alumasc Rooflights and Harmer aluminium
Roof Outlets, coupled with GX Pressed Aluminium Gutters and Heritage Circular
Pipes, ensuring adequate drainage could be achieved for the new roof.
Alumasc Rooflights provided an ideal solution to
allowing natural daylight into the building from above. The unique kerb design incorporates both security and waterproofing
to create a reliable, safe and secure rooflight, allowing horizontal
termination of the waterproof membrane. This makes water penetration virtually
impossible. The domed glazing is moulded from Marlon FSX Longlife, premium
quality solid polycarbonate, which has an impact resistance up to 200 times
that of glass.
Technically sophisticated, Harmer AV high-performance aluminium
roof outlets are chosen for this project as they guarantee a trouble-free
performance and are especially suited to flat roofing applications featuring
Harmer AV roof outlets combine
innovative product design with full industry compliance to meet the needs of
rainwater drainage in any construction project, with the ability to drain up to 40% more roof area than conventional
gravity outlets. Further to this, their lightweight, durable, non-corrodible
design means that they will do so for up to 40 years.
GX Pressed Aluminium Gutters are robust box section gutters
designed for traditional wet jointing on site. They’re especially suited to
applications where maximum capacity gutters are required. For the very large
drainage area of the campus roof, they were perfect.
Designed to fully accommodate thermal movement at every
joint, they are lightweight, durable and noncorrodible, and, upholding the
environmental prerequisites of this project, they are 100% recyclable.
Finally, Heritage Circular Pipes are available in 4 pipe diameters and 3 pipe lengths, together with a complete range of fittings. Can be factory finished to replicate cast iron or with BBA certificated powder coatings in a range of colours.
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