90 Hills Road
Bauder Total Roof System (BTRS)
Bauder Building Board
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Project:
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90 Hills Road
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Location:
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Cambridge
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Roof Area:
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700m²
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Architect:
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Barber Casanovas Ruffles Ltd
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Main Contractor:
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Morgan Sindall
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Approved Contractor:
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Voland Asphalte Ltd
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The specification
Bauder Total Roof System (BTRS) was specified since it is durable, robust and can withstand permanently sited loads of up to 2000Kg/m². The system build-up included 140mm BauderPIR FA-TE insulation for superior thermal performance, ensuring the roof achieved the required 0.17 U-Value.
Products applied
Bauder Total Roof Sytem (BTRS)
Fully integrated bituminous waterproofing, featuring modified bitumen membranes and high-performance insulation.
BauderPIR FA-TE
Flatboard insulation containing rigid polyisocyanurate (PIR).
Project challenges
The roof area was complex due to balustrade penetrations, low upstands, redundant rooflight units and intricate detailing requirements. Work hours had to be agreed with local residents to keep disruption to a minimum and insulation upgrades were necessary to satisfy building regulations. The client also wanted a roof canopy and lift shaft installed through the new waterproofing, which would need to withstand regular foot traffic and obviously remain watertight.
Despite the design and logistical challenges encountered, the new roof system was delivered on time and to budget transforming the building in terms of appearance, performance and functionality.
System installed
Bauder Total Roof System (BTRS)
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1 Bauder K5K
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A heavy duty, torch-applied SBS elastomeric bitumen capping sheet, featuring a spunbond polyester reinforcement to allow the finished product to cope with structural movement without fracture. The mineral finish provides protection against UV degradation.
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2 BauderTEC KSA DUO 35
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A technically advanced self-adhesive SBS elastomeric bitumen underlayer with “DUO” lap technology to ensure thorough sealing of lap joints, even in lower temperatures.
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3 BauderPIR FA-TE
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An efficient PIR insulation board with aluminium foil facing on both sides. The top facing features a printed grid pattern to aid site cutting. It is lightweight and has zero ozone depletion potential.
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4 BauderTEC KSD FBS
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A self-adhesive SBS elastomeric bitumen air & vapour control layer, with a mica finish.
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Advocacy
Project specifier, Barber Casanovas Ruffles Ltd:
“The delivery and technical support provided was incredibly efficient and professional throughout. All issues experienced were dealt with swiftly by Bauder, ensuring progress wasn’t hindered on site.”