Knauf Apertura makes new school sound even nicer

More than 2,500m2 of Cleaneo Apertura perforated plasterboard from Knauf Drywall makes school sound even nicer in the redeveloped Buttershaw Business and Enterprise College, Bradford. The high performance ceiling board helps to control reverberation in the largest spaces of the college and with its unique seamless and borderless finish, it looks good too. The Cleaneo Apertura has top billing in a specification that also sees extensive use of Knauf Soundshield in metal stud partitions designed to minimise sound transmission between learning spaces.

Drywall subcontractors CLM Drylining of Halifax installed the Cleaneo Apertura in the college’s new assembly hall, main dining room, gymnasium, music rooms and dance/fitness studios. CLM Managing Director John Houston says as many of these areas had ceilings at least six metres high, installers used scissor lifts to raise the Apertura panels to working height and provide a safe platform for installation. They used Apertura Circular 12/25 (12mm perforations at 25mm centres) jointed with Knauf Uniflott for the tapeless and seamless finish that makes Cleaneo Apertura an attractive choice, especially for large or unusually shaped rooms.

Cleaneo Apertura is a 12.5mm plasterboard, pre-laminated with a 45g/m2 black or white acoustic fleece. It is available with circular or square perforations in various all-over configurations, and in square or slotted patterns. All boards in the Cleaneo Apertura range give a Part E Class D sound absorption performance with a 60mm void depth; many achieve Class C with an additional insulating quilt.

In another part of its 52 week contract at Buttershaw, CLM also installed Knauf metal stud partitions designed for excellent learning and teaching conditions by minimising sound transmission between rooms, in line with the requirements of Building Bulletin 93.

There are five main types of partition, from 120 to 320mm wide, giving a range of airborne sound reduction capabilities from 45dB to 61dB. All are based on two layers of 12.5mm Knauf Soundshield on either side of Knauf ‘C’ or ‘I’ studs, some with Knauf Resilient Bar on each side for added acoustic performance. Knauf Soundshield was also used for lining external walls and internal blockwork walls.

Buttershaw BEC is being redeveloped as part of Bradford’s £400 million slice of the Building Schools for the Future initiative. The main contractor is a consortium of Costain and Ferrovial Agroman. Bradford is among four pathfinder local authorities pioneering the BSF programme, and over a 10-year period, it plans to refurbish or rebuild all its secondary schools. Buttershaw is one of three schools in the first phase, completed in 2008. Founded as a comprehensive school for 11 to 18 year-olds in 1956, it became Buttershaw Upper School (13-18) in 1974. In 2000 it reverted to high school status (11-18), becoming a specialist Business and Enterprise College in 2006.

With BB93’s focus on the importance of acoustic excellence to enhance the learning and teaching experience in schools, Knauf Drywall has developed a range of simplified drywall constructions to meet acoustic requirements, as well as providing adequate fire and impact resistance, for all the most common wall types in modern schools. Further details can be found in the free Schools brochure, part of Knauf Drywall’s Design Partner Series. Full details on Cleaneo Apertura are available in the Apertura brochure, in the same series.

Knauf Drywall manufactures a full range of plasters, plasterboards, insulating laminates, dry flooring, drywall accessories, and metal sections for domestic, commercial and public sector applications. Knauf Drywall pioneered carbon neutral plasterboard in the UK with Knauf Futurepanel. Knauf Drywall also actively promotes recycling from building sites and has a zero waste policy in its energy efficient factories at Sittingbourne in Kent and Immingham on Humberside.

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