About us

KLH Massivholz GmbH is the market leader for large-format cross-laminated timber elements, which are used and distributed worldwide as constructive wall, ceiling and roof elements under the brand name "KLH®".

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Take inspiration from the wide variety of KLH Projects

The first Edition of Timber Arch.

The collection of KLH projects presenting modern, individual timber construction architecture and the versatility of wood as a building material.

What is the best way to present modern, individual timber construction architecture and the versatility of wood as a building material?

That was the fundamental question in the creation of „Timber Arch Vol 01“ and the answer is simple. These are the completed projects that confirm the potential of massive timber construction – technically, ecologically, economically and, above all, creatively.

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2nd KLH
CLT FACTORY

In 2019 KLH Massivholz Wiesenau GmbH has started building of new cross laminated timber plant in Wolfsberg in Carinthia (Austria). The commissioning of the plant with an annual capacity of around 150,000 m³ in the final expansion stage is planned for mid-2020.

This project is co-financed by the ERDF European Regional Development Fund.
 
 
The latest production technology used in the new plant will safeguard the competitiveness and market share of the Johann Offner Group in the field of cross laminated timber, increase the degree of prefabrication of the cross laminated timber produced and create up to 83 new jobs in the structurally weak Wolfsberg region.

References

Projects from different
categories and countries

Educational Buildings

Bowdoin College

two new buildings combining aesthetics and efficiency

Hotels

Holmen Husky

Dog sledding trips with overnight stays in lavvu cabins

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

2019 A+Awards
Jury Winner

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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, CEILINGS AND ROOFS

COMBINABLE WITH ALL MATERIALS

EPD
in acc. with
ISO 14025
& EN 15804

Environmental
Product Declaration

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Events & Exhibitions

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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Hovden Hytte & Heim

23.01 bis 24.01.2026

Fair for Construction, Cabin Building, Interior Design, Energy and Outdoor Areas | Booth 05
Hovden Grendehus, Norway

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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)
Hall 3A | Booth 65 | 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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7th Forum Wood Building Baltic

26.02 bis 27.02.2026

Wood Architecture and Timber Construction
Vilnius Gediminas Technical University
Lithuania

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MMC Ireland National Conference

05.03 bis 05.03.2026

Trends, technologies and innovations in Irish offsite construction
The Johnstown Estate, Meath, Ireland

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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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Futurebuild Australia

11.06 bis 13.06.2026

Main event for innovation, sustainability and next-gen construction, ICC Sydney
Booth 353, Sydney, Australia

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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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Mass Timber+

06.10 bis 08.10.2026

Offsite Construction Conference
Pennsylvania Convention Center
Philadelphia, PA
USA

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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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Building Green

28.10 bis 29.10.2026

Focus on sustainability within architecture and building
Lokomotivværkstedet | Booth 67
Copenhagen, Denmark

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30th International Timber Construction Forum (IHF)

02.12 bis 04.12.2026

From practice – for practice
Congress Innsbruck
Austria

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News & Events

Publikationen

Timber Arch VOL. 05

With the fifth edition of Timber Arch, we are opening a new chapter in the world of timber architecture. It pays tribute to creativity, precision and…

News

KLH UK Raises £5,600 for St Catherine’s Hospice

KLH UK is proud to have raised £5,600 through the Paris cycle ride and London Bridges walk, supporting the incredible work of St Catherine’s Hospice.

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…

Technical Approvals, Certificates and Eco-labels

Find a partner
in your area.

To the interactive map

We are there for you.

+43 3588 8835
office@klh.at

KLH Massivholz GmbH
Gewerbestrasse 4
A-8842 Teufenbach-Katsch

Together with our customers we are contributing to an eco-friendly and sustainable future– this drives us and makes us proud.

Marco Huter | Managing Director

With innovations and continuous development of production technology, we are always focused on the needs of our customers. Our responsible handling of the renewable and sustainable resource “wood” pursues the goal of managing ecological and economic challenges.

Johann Hochegger | Managing Director

Research and development have always been a part of our concept. We aim to use innovative, efficient and both economically and ecologically sustainable solutions in solid timber construction.

Johannes Habenbacher | Chief Technical Officer

We are there
for you.