About us

KLH US Holding Corp. was formed in 2014 as a specialist supplier of cross-laminated timber panels; we provide consultation, design assist and material supply services to the construction industry.

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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

Single Family Houses

Wilson

Two identical main houses, each with an additional residential unit (ARU)

Public Buildings

Potawatomi

Forest County Potawatomi Community Centre combines culture and modern construction.

Hotels

IKUNA Naturresort

Educational Buildings

IES Serra de Noet

School building consists of three clearly structured building sections

Single Family Houses

Yangpyung Studio

Openness in a small space

Educational Buildings

Daycare Center Hofstetten

Two-group daycare center in solid timber construction

Single Family Houses

Lined House

Public Buildings

Hidden Creek

First Mass Timber Community Center in US

Public Buildings

Shelter for homeless women

Day and night centre for homeless women

Passive Houses

Castlemaine

Sustainable living comfort in a small space

Without
registration,
anytime,
anywhere

KLH DESIGNER

data+ | statics2d | co2

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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

29th International Timber Construction Forum (IHF)

03.12 bis 05.12.2025

From practice – for practice
Congress Innsbruck | Booth TF 121
Austria

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Swissbau

20.01 bis 23.01.2026

Leading trade fair of the construction industry in Switzerland
Hall 1.0 | Booth A45
Basel Exhibition Center, Switzerland

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Klimahouse

28.01 bis 31.01.2026

International Trade Fair for Resource- and Energy-Efficient Building
Hall CD | Booth D23/04
Fiera Bolzano, Italy

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Budma

03.02 bis 06.02.2026

International Construction and Architecture Fair
Poznań International Fair (PIF)
Poznań, Poland

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15. Forum International Bois Construction (FBC)

25.02 bis 27.02.2026

Int. Timber Construction Forum (FBC)
Paris Grand Palais
France

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Rebuild

24.03 bis 26.03.2026

The leading technology event for construction
IFEMA – Madrid | Booth 10F677
Spain

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International Mass Timber Conference

31.03 bis 02.04.2026

The largest gathering of mass timber experts in the world | Booth 833
Oregon Convention Center | USA

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HOUTBOUW

19.05 bis 21.05.2026

Trade fair for innovative solutions in wood and hybrid construction
Brabanthallen, Hall 1 | Booth D090
Den Bosch, Netherlands

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4. Süddeutscher Holzbau Kongress (SHK)

01.07 bis 02.07.2026

Timber Construction Congress
Schwabenlandhalle
Fellbach, Germany

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19. Europäischer Kongress (EBH)

07.10 bis 08.10.2026

19th European Conference
Urban Timber Construction
Kongresszentrum Gürzenich Cologne
Germany

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News & Events

News

Green Energy

KLH is committed to sustainability: New photovoltaic system with 4,200 PV modules provides environmentally friendly electricity for KLH® production.

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

Technical Approvals, Certificates and Eco-labels

Our 
services.

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At your service.

(971) 804-3794
Sebastian.Popp@klhusa.com

KLH US Holding Corp.
1155 SW Morrison St.
Suite #200
Portland, OR 97205

We provide thoughtful design solutions that are structurally and material efficient as well as ecologically appropriate, focusing on a healthy world for future generations.

Sergey David | Technician

I love the beautiful and elegant design solutions that are possible with mass timber. CLT is structurally efficient and naturally fire resistant, and is often the best choice for demanding construction schedules and challenging project sites.

Howard Thurston | Head of Engineering

Our team continually strives to provide the very best quality product, supported by a professional and personalized process. We feel integrity is critical to a successful project and a beautiful end result.

Michael Hahn | Design Director

You have the vision. We have the knowledge and material to make it a sustainable mass timber reality.

Sebastian Popp | Technical Director

We are there
for you.