Carbon Neutral Construction S A F E • E F F I C I E NT • A F F O R DA B L E • S U S TA IN A B L E

W W W . K L H U K . C O M

KLH UK

KLH UK is a specialist solid timber supplier providing a 'one stop shop' service – consultation, design, manufacture, supply and erection – to the construction industry.

The solid cross-laminated timber panels are industrially manufactured at our parent company's, KLH MassivholzGmbH, factories in Austria and Sweden. Using state of the art CNC technologies the panels are cut and processed to the exact dimensions of the building.

KLH UK, formed in 2005, supply the cross-laminated timber and act as a sub-contractor for the erection of the structures, where required. Our London based team of 25 work with numerous architects and engineers to assist in the development of sustainable and cost effective structural solutions – seeking to optimise the design and buildability from the outset.

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Photo: Simon Warren

Timber and Sustainable Construction

KLH, by the nature of its product, is a specialist in sustainable construction. It promotes the use of timber in lieu of concrete and steel – all timber used is certified, as is the zero waste production process. Audits are also carried out to calculate the CO2 emissions generated by the delivery vehicles and are offset against the huge amounts of stored CO2, to give a true picture of the overall carbon count.

Timber is the only truly renewable mainstream construction material, and has been appreciated as a building material for centuries – today it is experiencing a tremendous renaissance. This is due to increasing health consciousness, environmental awareness and also to the development of high-tech engineered timber products that can also contribute to a healthy indoor environment.

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Cross-laminated timber (German abbr. KLH) is produced from kiln dried spruce/fir boards which are stacked at right angles and glued together over their entire surface. Depending on the purpose and static requirement, the plates are available in 3, 5, 7 or more board layers.

Gluing is carried out with PUR adhesive which is completely solvent and formaldehyde free and tested in accordance with DIN 68141 and other strict criteria by MPA Stuttgart and approved for the production of load-bearing timber construction elements and special construction methods in accordance with DIN 1052 and EN 301. Crosswise gluing at high pressure reduces the wood's expansion and shrinkage to an insignificant level.

Photo: KLH UK Ltd

KLH Solid Timber Panels

KLH solid timber panels are used as large wall, floor and roof elements. They are produced in a maximum length of 16.50m (optimum shipping size 13.50m), a maximum width of 2.95m and a maximum panel thickness of 0.50m, though to minimise any wastage and off cuts, we recommend that the calculation widths of 2.40/2.50/2.72 and 2.95m are taken into account as early as possible in the planning phase of a project.

KLH solid timber panels are industrially manufactured structural building elements. They are available as standard in non visual quality, industrial visual quality and domestic quality for classroom/residential spaces.

The panels are cut and processed in the KLH Massivholz GmbH factories, in Austria & Sweden, using state-of-the-art CNC technologies, resulting in excellent dimensional stability, both in overall panel size and for structural openings.

As well as the obvious environmental benefits, introducing KLH panels into a scheme can result in cost savings:

• Less weight in the overall structure results in a more economic design of the substructure/foundations (less concrete)

• The load distribution of the panelised structure can reduce the thickness of the transfer slab (less concrete)

• Prelims can be reduced due to the shortened construction programme

• Programming can be enhanced by, for example, pre-ordering windows – the high degree of accuracy afforded by the CNC cutting process ensures that exact structural openings will be delivered to site.

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Photo: Gareth Gardner

The clean, dry erection process ensures that no drying time is required – following trades can be working immediately on the preceding floor if required. Based on our experience it is clear that there are time saving opportunities for the following trades:

• Services – approximately 30-50 percent quicker

• Dry liners – approx. 20-30 percent quicker

• Window & door installers – approx. 20-30 percent quicker

• Insulation installers – approx. 20-30 percent quicker

• Cladding installers – approx. 20-30 percent quicker.

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Photos: Will Pryce

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Project: Stadthaus Residential Development Architect: Waugh Thistleton Engineer: Techniker

The nine storey Stadthaus residential development designed by Waugh Thistleton and constructed entirely in timber, is the tallest timber residential building in the world. Comprising of private and affordable housing, Stadthaus has twenty nine apartments. The KLH cross-laminated solid panels form a cellular structure of timber load bearing walls, including all stair and lift cores, with timber floor slabs. The project has been acclaimed around the world as pioneering for its structure, height and low carbon construction.

Awards2009

• Winner of the British Construction Industry, Judges' Special Award

• Shortlisted for British Construction Industry, Environmental Award

• Shortlisted for RIBA London Region Award

• Mail on Sunday British Homes Awards, Best Innovation Development

• Your New Homes, Best Eco Development

2008

• Winner of the Structural Wood Award and the Offsite Construction Wood Award

• Mail on Sunday British Homes Awards, Commended in Housing Project of the Year

• Shortlisted in the Hackney Design Awards

Photo: Will Pryce Photo: Will Pryce

Project: Chichester Festival Theatre – New Education and Rehearsal Building Architect: LCE Andrzej Blonski Architects Timber Engineer: Atelier One

LCE Andrzej Blonski Architects were commissioned to design the new Education and Rehearsal Building at the Chichester Festival Theatre. The new building, constructed from KLH cross-laminated timber, provides a generous and contemporary space, sensitive to its conservation setting and responding to the initial vision of the Festival Theatre as a 'Pavilion in the Park'. The building is comprised of a Rehearsal Room and an Education Space, set on either side of a central service core and main entrance. Both spaces are flexible and can be used for rehearsal, performance, educational and outreach programmes, events and functions.

A traditional 'garden wall' wraps the rear of the building and the simple palette of materials are combined to different effect throughout the building to vary transparency. The design embeds the building in the landscape, sinking the education and rehearsal spaces in order to maximise the height, whilst nestling beneath the canopies of the existing mature trees.

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Photo: Rubens Azevedo

Photo: Rubens Azevedo

Photo: Nikolay Shahpazov

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Project: Open Academy Norwich Architect: Sheppard Robson Architects Engineer: Ramboll UK

Sheppard Robson were selected to design the first Academy to be built in Norfolk. It was essential for both them and the contractor Kier that an exemplary building was delivered for the Open Academy - from its embodied energy to sustainability and ongoing environmental performance. The selection of KLH's unique and highly environmentally efficient cross-laminated timber construction method ensured these objectives were achieved.

The new 9,000m2 development replaces the existing 1960's school with a building that has been designed to meet the Academy's vision of a 'vibrant, attractive and stimulating learning environment' that complements its 'open' community.

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Photo: Jason Elliott Photo: Jason Elliott

Photo: Jason Elliott

Project:

Salvation Army Citadel Corps Architect: Architects Engineer: Techniker

Constructed entirely of timber and cloaked in an undulating zinc roof, the new £2 million Salvation Army Citadel Corps in Chelmsford by Hudson Architects provides 900m2 new accommodationfor the mission on the site of its former premises, which it has occupied since 1974. The new centre reflects the two sides of the mission, providing an assembly hall for worship as well as recreational facilities for the wide range of community outreach activities.

The building's plan recognises that these two aspects are interconnected whilst offering flexibility and separation to permit activities to function simultaneously. An indoor sports hall, outdoor play area, lounge, kitchen and foyer with reception café facilities are arranged around a 320-seater worship hall, with administration offices located on the first floor.

Awards2009

• Shortlisted for RIBA East Spirit of Ingenuity Awards

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Photo: Keith Collie

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Project: Bedfont Lakes Architect: Archer Architects Engineer: Akera Engineers

Bedfont Lakes was the first opportunity for Archer Architects to design a structure that truly married the techniques of offsite prefabrications with the principles of low carbon construction.The pavilion was constructed entirely of KLH cross-laminated timber panels, which were factory prefabricated and erected onsite over a five day period. The panels themselves are made of timber off-cuts, recycled from lumberyards and as such the thermal performance, coupled with the embedded carbon contained within the fabric made an extremely efficient and flexible form of construction.

A green roof was incorporated into the structure to enhance the thermal performance further and reduce rainwater run-off by 60 percent.

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Photo: Tony MacLean

Photo: Tony MacLean

Photo: Tony MacLean

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Project: The Office Architect: David Grindley Architects

'The Office' a single storey office designed by and for David Grindley Architects was constructed from prefabricated KLH cross-laminated timber panels, which have been left exposed internally. David Grindley Architects provided KLH UK with the design templates and the panels were cut in the Austrian factory and then assembled onsite.

Paul Grindley stated that "People really enjoy the space and like being able to see what the building is actually made of, rather than only being able to see white-painted surfaces."

Awards2007

• RIBA Ibstock Downland Prize, Live/Work Category

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Photo: David Grindley Architects

Photo: David Grindley Architects

Project: Woodside Lodge Architect: David Grindley Architects Engineer: Tapsell Wade

The Woodside Lodge designed by David Grindley Architects is a 20 bedroom care home for young people with mental health problems. The building is located in the garden of a large house dating from 1897 and is organised on two floors in an L shape plan. One wing contains 20 bedrooms with en-suite facilities and the other, the lounge, reception and treatment room.

The Lodge is constructed from KLH prefabricated solid timber panels which are used for all of the above ground walls, floors and roof.

Awards2009

• Shortlisted for the Wood Awards

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Photos: Simon Phipps Photos: David Grindley Architects

Photo: Simon Phipps

Photo: Simon Phipps

Photo: Kier Eastern

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