The ground-breaking Derbigum Olivine roofing technology from Alumasc has been used in the recent redesign and refurbishment of Nottingham Trent University’s Clifton Campus Library.
The library now features over 1000m2 of Olivine, providing a waterproof, BBA approved roofing solution.
Alumasc Derbigum Olivine roofing absorbs and neutralises CO2 on contact, as it falls in rainwater.
As well as teaching the effects of positive actions towards the environment, NTU has decided that the best way to impress the importance of environmental consciousness to their students is to demonstrate it in their campus buildings.
M & 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.
“Alumasc 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 strength.”
This 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 for 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 continuous membranes.
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. They were perfect for the very large drainage area of the campus roof.
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. They can be factory finished to replicate cast iron or with BBA certificated powder coatings in a range of colours.