Cavan, Ireland -- Kingspan Thermataper TT46 LPC/FM, a tapered insulation roofing system designed to enhance water drainage from flat roofs, has been specified for a world-class performance space in Cardiff.
The Royal Welsh College of Music and Drama's new £22.5 million ($34 million), BREEAM 'Excellent', performance complex, designed by BFLS Architects, includes the 450 seat Dora Stoutzker concert venue; the Richard Burton Theatre; four state-of-the-art rehearsal studios; and a terraced cafe bar overlooking the Grade I listed Bute Park.
Each performance space is a separate building, but the whole development is linked by a single 'floating' roof that ties the existing Bute Theatre to the new drama, concert and public arcade spaces, Kingspan said in a 31 Oct announcement.
"We had considered a green roof but as sedum is non-indigenous to Wales that idea would have interfered with our aims for BREEAM 'Excellent.' Instead we designed a traditional 'warm deck' roof build up; and we used the TT46 product to achieve a 0.15 U-value whilst keeping the roof build up as low as possible," said Paul Bavister, associate director at BFLS and project architect for the development.
The design used some 2500 sq.m of the high-performance rigid urethane insulation and the boards were fixed to metal decking.
The Irish company added that the tapered boards are pre-mitred which potentially reduces waste by 50 percent when compared to on-site cutting of hips and valleys. The integral roof falls in the insulation aid water run-off, preventing ponding and associated problems, Kingspan said.