About us

KLH UK is a market leader and pioneer for Cross-Laminated Timber design and construction. A wholly owned subsidiary of the KLH Massivholz which has manufactured and distributed CLT worldwide for over 20 years.

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2nd KLH
CLT FACTORY

Two decades after pioneering the world's first cross-laminated timber facility in Katsch in 1999, KLH celebrated another milestone with the inauguration of its second production site in Bad St. Leonhard, Carinthia, Austria. Boasting an impressive annual output capacity of approximately 125,000 m3 of KLH® - CLT, this expansion represents a significant leap forward in KLH's commitment to innovation and sustainability in timber construction.

The incorporation of state-of-the-art production technology not only solidifies KLH's competitive edge but also elevates the overall efficiency of CLT manufacturing. Moreover, this expansion has catalysed a positive effect in the local economy, creating over 100 employment opportunities in the economically challenged Wolfsberg region. Through strategic investments and a steadfast commitment to sustainability, KLH continues to shape the landscape of modern timber construction.

References

Projects from different
categories and countries

Refurbishment & Extensions

La Tour Watt

Public Buildings

Bronx Children´s Museum

A museum that brings children closer to nature and urban culture.

Modular construction

Montessori School

A modular timber school building for primary and secondary school children

Educational Buildings

Kinderhaus Kreuzfeld

An architectural masterpiece. Sustainably built with visible KLH® – CLT, it offers children an inspiring environment for education and community.

Modular construction

Fritz-Kissel-Housing

Careful addition with wooden modules

HotelsModular construction

Twente – Family Homes

Sustainable and solid prefabricated houses

Educational BuildingsRefurbishment & Extensions

HLT Retz

The original building from the 1970s underwent an expansion with the addition of a courtyard building. This new structure seamlessly connects to the existing one, thanks…

Hotels

Houten Hotel Almere

Addition to an existing restaurant with over 172 hotel rooms on four floors.

Refurbishment & Extensions

Timber Lofts

A new four-story building and the renovation and reuse of an existing five-story industrial building

Multi-storey Residential Buildings

Le Haut-Bois

The two structures, a 9- and a 6-storey building, are connected by the unique staircase that is both open on one side and glazed on the…

KLH designer –
Without
registration,
anytime,
anywhere

KLH DESIGNER

ARCHITECTURAL | STRUCTURAL | ECO

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Product Advantages

Where the effectiveness of wood meets modern technologies – building with KLH® has many advantages.

FREEDOM IN ARCHITECTURE AND SPACE CONCEPT

SIMPLE PLANNING OF INDIVIDUAL BUILDINGS

ENVIRONMENTALLY SUSTAINABLE BUILDING MATERIALS

HEALTHY, COMFORTABLE INDOOR CLIMATE

CLIMATE-FRIENDLY AND CO2 NEUTRAL

ELEMENTS CONTROLLABLE IN TERMS OF BUILDING PHYSICS

CE-CERTIFIED AND TESTED FOR ENVIRONMENTAL IMPACTS

SHORT CONSTRUCTION PERIOD AND DRY CONSTRUCTION METHOD

HIGH DIMENSIONAL ACCURACY DUE TO CNC-CONTROLLED CUTTING

LASTING VALUE AND ENERGY-EFFICIENT

HIGHLY STABLE COMPONENTS FOR WALLS, FLOORS AND ROOFS

COMBINABLE WITH ALL MATERIALS

EPD
in acc. with
ISO 14025
& EN 15804

Environmental
Product Declaration

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Events & Exhibitions

Sydney Build Expo

01.05 bis 02.05.2024

Australia’s Leading Construction Show
ICC Sydney, Darling Harbour
Booth H22
Sydney | Australia

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CONSTRUMAT

21.05 bis 23.05.2024

International Building Exhibition
Fira Barcelona – Gran Via Venue
Hall 2 | Booth D41
Barcelona, Spain

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Build in Wood

22.05 bis 23.05.2024

Danish Timber Construction Conference
Venue place: The Plant Cph
Copenhagen, Denmark

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13. Forum Wood Building Nordic (WBN)

03.10 bis 04.10.2024

Wooden Architecture & Constructions in the Future
Oslo, Norway

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17. Europäischer Kongress (EBH)

16.10 bis 17.10.2024

17th European Conference
Urban Timber Construction
Kongresszentrum Gürzenich
Cologne, Germany

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Building Green

30.10 bis 31.10.2024

Focus on sustainability within architecture and building
Forum København | Booth 122
Copenhagen, Denmark

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28th International Timber Construction Forum

04.12 bis 06.12.2024

From practice – for practice
Congress Innsbruck
Austria

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WCTE

22.06 bis 26.06.2025

World Conference on Timber Engineering
Brisbane Convention & Exhibition Centre | Australia

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News & Events

Publikationen

Timber Arch Vol. 04

On our journey through the world of timber architecture, we now find ourselves at the opening line of the fourth edition of Timber Arch. As in…

News

Fire protection test

KLH® – CLT has successfully passed the tests for the Australian and New Zealand markets in order to fulfil the fire protection requirements there.

News

Component catalogue

KLH Massivholz GmbH presents its latest innovation: the extended component catalogue, which is now available online. The revision of the catalogue aims to offer users an…

News

Tower of Wind

The project in the heart of Copenhagen pays homage to the world’s first meteorological observation station, the historic “Tower of Wind” in Athens.

News

Non-Fire Spread Classification

KLH® – CLT Exterior Walls receive Non-Fire Spread Classification in Poland

Publikationen

Timber Arch Vol. 03

We are all responsible for this one and future generations. If we want to combat climate change, we will have to use even more wood in…

Technical Approvals, Certificates and Eco-labels

Our 
services.

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We are there for you.

+44 (0) 20 3031 8070
General Business: office@klhuk.com
Project Enquiries: enquiry@klhuk.com

KLH UK Limited
23 Jacob Street
London SE1 2BG

We really wanted to say thank you to everyone who has been involved in getting us this far. We have been really excited to see the structure go up and the on-site team have done an amazing job. The CLT looks great.

Mary & Klaus Morris | Blackwood House

I would like to record that I have been very impressed with your work on site and the efficiency of your construction team. The finished product is exactly as expected and was completed ahead of programme. Thank you for the efforts of your team.

David Spooner | Construction Project Manager | Hastings Pier Charity

Mayfield School are delighted with the new buildings. Innovative use of space and light in the atrium areas and other specialist classrooms will enhance the possibilities available to our staff and students.
The Sixth Form is designed not only to give a real feature (Heller-Up staircase), but is also a practical and useable large space which can be used by the whole school for various activities. The new building and external areas have created a real ‘WOW’ factor for our community as a whole.

Allison Greenwood | Deputy Headteacher | Mayfield School

The Mayfield School Project was delivered on time and within budget. It is to an excellent quality of workmanship which surpassed the expectations of the client team and the end user. The building’s design is rational, durable and above all maintainable which will ensure that Mayfield School will continue to provide teaching excellence within the London Borough of Redbridge.

Steve McConaghy | Senior Construction Project Manager| London Borough of Redbridge

I am the HT of a school in the UK which has been constructed using CLT. I am tremendously impressed with the very calm and purposeful learning environment that has been created. The students are so proud of the building and the exposed CLT is a major factor in this as it gives a high-end quality finish not common in schools in the UK. The CLT construction method enabled the building process to be rapid which was a major factor in us moving in on time.

Keir Smith | Head Teacher | William Perkin C of E School

We are completely delighted with the CLT!!! It’s been very exciting seeing our project in the factory and then going-up on site so quickly.
We love the exposed CLT walls and the character it gives the interiors – we can’t wait to move in. I think that the KLH team has been excellent throughout, from first contact, through the quotation stage to shop-drawings and the on-site erection crew – everyone has been very professional and helpful at all times. It has been a pleasure working with you all – I would be very happy to use KLH again in the future.

Ruth Butler | Ruth Butler Architects | Convent Lane

There is a great ambience in occupying a CLT school and it generates interest and a positive atmosphere with students, staff and visitors. Would definitely recommend it to another school.

Head Teacher | City Academy, Norwich

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for you.