Subscribe to newsletter

Submit Article


Editors Note: Knauf Insulation provide:

  • Wall insulation

  • Roof insulation

  • Acoustic insulation

  • Thermal insulation


Advertise Here

Request Quote

CPD Seminar


Advertise Job

Advertise Job

Terms & Conditions

Terms & Conditions

Contact Building Design

Contact Building Design

e-mail Building Design

e-mail Building Design


- Building Design - Services & Construction Products Index

Request Information

Links Page



KNAUF’S Technical Support Is Second To None

Knauf Insulation’s outstanding technical support and three-dimensional calculation models helped to meet the challenging U-value needed for the external walls of CTC Kingshurst Academy in Birmingham, as part of a £10.5 million project.

The aim was to enable the academy to bring together a range of departments within purpose-built, modern teaching accommodation. In addition to a new steel frame, four-storey teaching block building, main contractors ISG also carried out a comprehensive programme of internal and external refurbishment. In terms of the insulation, the brief for sub-contractors EHS Roofing was to find a flexible product that could meet the demanding U-value of 0.22 W/m²K for the external walls.

The key to Knauf Insulation securing the project was its ability to provide in depth technical support, including complex heat flow modelling calculations, which were carried out in accordance with the guidelines set by the BRE. The unique three-dimensional calculation support service, provided by Knauf Insulation’s Technical Advisory Centre, was an integral part of the product specification process to ensure that the exact thickness recommendations were proposed in order to meet the project’s specific U-value requirements.

Originally rigid foam board insulation was specified, but after the project started it became apparent that the insulation zone allowed for on the drawing was not wide enough to give the required U-value. There was also a limited cladding zone that could not be altered. It was therefore important to look to other insulation types and providers to be able to satisfy requirements.

David Parnell Consultant at EHS Roofing explains: “Having worked with Knauf Insulation before, we knew they would be able to give us unbiased advice on choosing the best insulation product for the application, to achieve the desired U-value.”

The resulting solution from Knauf Insulation met all of EHS’ insulation prerequisites by reducing the thickness of insulation in the rainscreen zone to 50mm of Earthwool® RainScreen Slab between the metsec metal stud system. This was fixed to the cement particle board in the insulation zone behind the rainscreen cladding, with 120mm Earthwool Flexible Slab between the metsec studs. A further 70mm of Earthwool Flexible Slab was then installed by the dry lining contractor in the c studs behind the internal plasterboard finish.

As David Parnell at EHS Roofing explains: “With this challenging build, the only way we could get a truly accurate U-value was to create a three-dimensional model. Knauf Insulation was the only manufacturer that could offer us this calculation service.

“Once it had been decided to use Knauf Insulation, we leaned on them heavily for technical support. As this is such a difficult specification we became a very demanding customer, requesting different calculations for all our options. Each time we were met with a quick and efficient response – their technical support was second to none.”

Earthwool RainScreen Slab is a rock mineral wool slab containing a water repellent additive, specially developed for the thermal insulation of rainscreen cladding system applications. It is lightweight but rigid enough to resist the compression forces generated when installing the insulation slabs to the masonry substrate. Earthwool RainScreen Slab is non-combustible and provides exceptional reaction to fire performance – it is classified as Euroclass A1 to BS EN ISO 13501-1, whilst delivering excellent thermal and acoustic performance, particularly suited for public buildings such as schools.

Knauf Insulation was able to reduce the thickness of insulation in the rainscreen zone by introducing insulation between the light steel frame using Earthwool Flexible Slab, a multi-purpose, flexible, friction fit, rock mineral wool slab. With outstanding acoustic, thermal and fire properties, the product is ideally suited for applications such as timber and metal studs, where the slab will friction fit between the studs - unlike a rigid foam insulation board, which can be problematic.

For more information on Knauf insulation’s unique three-dimensional calculation service please email below:

Action Storage Shelving systems Storage equipment Storage lockers Storage shelves News 110811

Andrews Water Heaters Condensing water heaters Water heaters Storage water heaters News 100811

Armstrong Heating systems Space heating systems Hot water systems News 120811

Azur Solar PV solar Solar photovoltaic Solar panels Solar energy News 080811

Baxi Commercial Division Baxi boilers Boiler servicing Water heaters Gas boilers News 100811

Carrier Air conditioning units Air conditioning Heating and cooling News 100811

Chiltern Dynamics Acoustic testing Energy services Fire consultancy Product assessments News 120811

Cuprinol Trade Wood preservative Wood protection Timber treatment Wood preserver News 110811

Danfoss AC drives Inverter drives HVAC drives Heat pumps News 120811

Dimplex Electric fires Inset fires Electric stoves Fire surrounds News 090811

Dow Wall insulation Floor insulation Roof insulation Insulation products News 120811

Dulux Trade Trade paint Dulux trade Dulux paint Gloss paint News 110811

Eurocell UPVC windows UPVC doors French doors Conservatory roofs News 120811

HVMS MV switchgear Packaged substations Power engineering Power quality News 100811

ICI Paints Dulux paint Trade paint Wood preservative Decorative paint News 120811

Ideal Windows and Conservatories Double glazing External doors Front doors Hardwood doors News 120811

Knauf Drywall Dry lining Partition walls Acoustic plasterboard Plaster board News 080811

Lowara UK Fire sprinkler systems Domestic fire protection Water pumps News 100811

Mira Showers Mira showers Shower pumps Digital showers Shower enclosures News 090811

NBT Wall cladding Timber panels Building panels Insulated cladding News 090811

Rockfon Acoustic ceilings Ceiling tiles Modular ceilings Suspended ceiling News 080811

Saint Gobain Cast iron downpipes Rainwater products Cast iron guttering News 090811

Saint Gobain Isover Cavity wall insulation Mineral wool insulation Wall insulation News 120811

Slingsby Workplace equipment Ear protectors afety clothing Safety boots News 080811

Space Air Solutions Heat pumps Renewable heat Heat recovery Air conditioning News 110811

Spirax Sarco Pipe insulation Steam boilers Steam management Isolation valves News 080811

Spirax Sarco Steam boilers Heat recovery Steam systems Steam plant News 100811

Spirax Sarco Steam boilers Steam services Steam control Heat recovery News 090811

Sto Ltd External wall insulation Wall insulation Exterior wall insulation News 120811

Trend Building management systems Energy management systems Climate control News 080811

Twyford Bathroom suites Shower cubicles Bathroom sinks Sanitary fittings News 120811

Velux Natural ventilation systems Natural daylight systems Roof windows News 120811

Windhager Solid fuel stoves Biomass heating systems Biomass heating News 120811

Zapp Outdoor canopies Shop canopies Shop awnings Commercial canopies News 120811

News Categories:
Wall insulation Roof insulation Acoustic insulation Thermal insulation

Arundel Jones Associates Ltd
Hill Farm Business Park, Linton Hill, Maidstone, Kent ME17 4AL
Tel : 01622 745333

See also:

| BuildingDesign Directory | BuildingDesign Tenders |

|BuildingDesign News Archives | 2006 | 2007 | 2008 | 2009

| BuildingDesign Recruitment | AJA Part Time Jobs Board |

© 2010 copyright all rights reserved Registered in England and Wales No. 07334149