Manufacturer of KLH® cross-laminated timber (CLT) for solid timber construction – production, technical consulting and logistics

KLH Massivholz GmbH

Gewerbestrasse 4, A-8842 Teufenbach-Katsch (Headquarters) · Wiesenau 2, A-9462 Bad St. Leonhard (Production)New on Amplifa

1999Commercial register FN 334040k

GmbHLegal form

2Locations in Austria

max. 2.95 mElement width (exception 3.20 m)

About KLH Massivholz

KLH Massivholz GmbH, headquartered in Teufenbach-Katsch, Styria, produces cross-laminated timber (CLT) under the KLH® brand. At the production site in Bad St. Leonhard in Carinthia (KLH Massivholz Wiesenau GmbH), the company manufactures on an automated production line; the plant site has its own rail connection. The material is softwood/construction timber; elementary building components are wall, floor and roof elements which, according to the transport conditions, are max. 2.95 m wide (in exceptional cases 3.20 m). In addition to production, KLH offers technical consulting and project support, a component catalogue, planning support for architects, as well as truck, container, sea and inland waterway transports. Reference projects include residential construction, public buildings, educational facilities, healthcare, hotels, offices, retail, modular construction and passive houses in more than 25 countries. The power supply for the production facility in Wiesenau is provided by an in-house photovoltaic system with 4,200 modules.

Site: A-8842 Teufenbach-Katsch
Processes: Manufacture of cross-laminated timber (KLH® – CLT, solid timber construction), Automated production line for cross-laminated timber, Production of cross-laminated timber (KLH® – CLT), Technical consulting/project support, Logistics (truck and container transports, sea/inland waterway transport), Component catalogue, Research and development, Structural analysis/planning support via brochures for architects and planners
Materials: Construction timber/softwood (for cross-laminated timber CLT), Cross-laminated timber (KLH® – CLT), Construction timber/softwood
Industries: Timber construction/solid timber construction, Residential construction (single-family houses, multi-storey residential, Public buildings, Education sector, Healthcare, Hotels

01
Softwood/construction timber as raw material
02
Automated production of cross-laminated timber (KLH® – CLT)
03
Component catalogue and element configuration
04
Technical consulting and structural/planning support
05
Transport by truck, rail, container, sea and inland waterway

Materials & Processes

CLT

Cross-laminated timber (KLH® – CLT)

Crosswise glued layers of softwood for wall, floor and roof elements in solid timber construction.

Nadelholz

Construction timber/softwood

Raw material for cross-laminated timber production based on the renewable resource wood.

Locations

Teufenbach-Katsch

Headquarters

Bad St. Leonhard (Wiesenau plant)

Production site (KLH Massivholz Wiesenau GmbH) with its own rail connection

Part weight / size: Element width max. 2.95 m (exception 3.20 m)
Materials: Softwood/construction timber

Automated production line for cross-laminated timber
Photovoltaic system with 4,200 modules

Components

**Building made of KLH®-CLT (Ronald McDonald House)**Cross-laminated timber · Healthcare

**Structure made of KLH®-CLT (Wen Xian, education sector)**Cross-laminated timber · Education

Inside the production

Industries

Timber construction/solid timber constructionResidential construction (single-family houses, multi-storey residentialPublic buildingsEducation sectorHealthcareHotelsOffice buildingsRetailModular constructionPassive house

Processes & technical limits

Processes	Tolerance	Max. part	Weight	Lot size	Materials
Manufacture of cross-laminated timber (KLH® – CLT, solid timber construction)Timber construction/wood processing	–	Element width max. 2.95 m	–	–	Wood (softwood/construction timber)
Automated production line for cross-laminated timberTimber construction/wood processing	–	–	–	–	Wood (softwood/construction timber)

1 Anlagen & Maschinen

Machine	Manufacturer / model	Quantity	Working area	Year built	Site
Automated production line (cross-laminated timber)	–	–	–	–	Bad St. Leonhard (Wiesenau plant, Carinthia)

Additional services

Production of cross-laminated timber (KLH® – CLT)Technical consulting/project supportLogistics (truck and container transports, sea/inland waterway transport)Component catalogueResearch and developmentStructural analysis/planning support via brochures for architects and planners

Reference customers

PennySt Catherine's Hospice (KLH UK fundraising campaign)

History

1999
Commercial register number FN 334040k; exact year of foundation not explicitly stated in the sources
2021
Förderpreis.nachhaltig 2021 (sustainability sponsorship award) of Kärntner Sparkasse AG awarded to KLH Massivholz Wiesenau GmbH
2023
Fire protection tests for Australia and New Zealand successfully completed; Non-Fire-Spread classification for KLH®-CLT exterior walls in Poland; first rail transport of KLH®-CLT to Norway