Environmental Product Declaration In accordance with ISO 14025:2006 and EN 15804:2012+A2:2019/AC:2021 for: KLH® - CLT (Cross Laminated Timber) from KLH Massivholz GmbH Programme: The International EPD® System, www.environdec.com Programme operator: Publication date: Revision date: Valid until: 2028-06-29 An EPD should provide current information and may be updated if conditions change. The stated validity is therefore subject to the continued registration and publication at www.environdec.com

General Information Programme information The International EPD® System EPD International AB Box 210 60 SE-100 31 Stockholm Sweden www.environdec.com [email protected] Programme: Address: Website: E-mail: Accountabilities for PCR, LCA and independent, third-party verification Product Category Rules (PCR) CEN standard EN 15804 serves as the Core Product Category Rules (PCR) Product Category Rules (PCR): Third-party verification Independent third-party verification of the declaration and data, according to ISO 14025:2006, via: ☒ EPD verification by individual verifier Third-party verifier: Approved...

Company information Owner of the EPD: KLH Massivholz GmbH, Gewerbestraße 4, A – 8842 Teufenbach-Katsch, E-Mail [email protected], www.klh.at, Tel +43 3588 8835 Contact: DI Andreas Wabl Description of the organisation: KLH is one of the global leaders in the production of cross-laminated timber (KLH® - CLT), having pioneered the product in collaboration with the Technical University of Graz in 1996. Since 1999, when the first production facility in Teufenbach-Katsch, Styria, was put into operation, production capabilities and plant expansion have been continuously improved. The newest cutting-edge...

Application / intended use: KLH® - CLT is ideally suited for load-bearing, bracing and non-load-bearing wall, ceiling and roof elements. They are used in the construction of single-family houses, multi-storey residential buildings, public buildings, administrative buildings, industrial and commercial buildings, conversions and extensions as well as in bridge construction. The dimensioning and execution are carried out according to the static, structural-physical and legal requirements. For this reason, KLH® - CLT are manufactured exclusively on a project-specific and made-to-order basis. When...

Time representativeness: The data for the KLH® - CLT are collected from the two factory sites in Teufenbach-Katsch and Wiesenau (Bad St. Leonhard). The production data for “Katsch” are mainly from 2020. The “Wiesenau” plant was newly built and the utilisation was very low at the beginning, the last 3 months of the declared data from August to October 2021 were considered more representative and extrapolated to 1 year. Database(s) and LCA software used: Data from /ecoinvent v3.8 (2021)/ for generic data and the Software SimaPro (Version 9.3.0.3 Multi user) has been used. Description of system...

Product stage (A1-A3): These stages cover upstream processes such as the extraction and processing of sawn raw softwood boards mainly from Austria, the production of glue, auxiliary and packaging materials. A declared ecological electricity mix was taken into account for the main sawmill. All information on truck transport from the origin of these materials to the two KLH factory sites, including intra-plant transport was included. The production of KLH® - CLT and by-products includes all incoming and outcoming material and energy flows. Site-specific ecological mixes were declared and balanced...

The products can theoretically be dismantled non-destructively. A confirmation from the manufacturer was submitted that 100 % reuse is possible. Therefore complete reuse is accounted for in scenario 2. It lies in the future and requires planning for the deconstruction of fasteners, connections and for material separation, some of which is already being implemented. It was assumed that the panels are taken to a recycling plant. For this purpose, the distance of 50 km is assumed in C2. Resource recovery (D): Scenario 1 Thermal recovery: Energy recovery for electricity is accounted for with an efficiency...

Modules declared, geographical scope, share of specific data (in GWP-GHG results) and data variation (in GWP-GHG results): Construction process Resource recovery Modules declared Waste processing De-construction demolition Construction installation Specific data used Variation – products Variation – sites Content Information Average content for both sites Weight, kg Post-consumer material, weight-% Biogenic material, weight-% dry mass and kg C/kg per produkt Sawn wood board from softwood (u=12 %) Weight-% (versus the product) Weight biogenic carbon, kg C/kg Product components Packaging materials...

Environmental Information | Production / Construction The impact categories and associated indicators, methods and characterisation factors of EN 15804:2012+A2:2019 of 2020-02-15 (EF 3.0) were used Potential environmental impact - 1m³ KLH® - CLT Indicator Global warming potential (GWP) land use and land use change total Depletion potential of the stratospheric ozone layer (ODP) Acidification potential (AP) Eutrophication potential (EP) terrestrial Formation potential of tropospheric ozone (POCP) Abiotic depletion potential* for non-fossil resources (ADPE) fossil resources (ADPF) Water (user)...

Environmental Information | End of Life “Incineration” Potential environmental impact - 1m³ KLH® - CLT Unit biogenic land use and land use change used as energy carrier (PERE) used as raw material (PERM) total (PERT) used as energy carrier (PENRE) total (PENRT) Use of renewable secondary fuels (RSF) Use of non-renewable secondary fuels (NRSF) Global warming potential (GWP) Depletion potential of the stratospheric ozone layer (ODP) Acidification potential (AP) Eutrophication potential (EP) terrestrial Formation potential of tropospheric ozone (POCP) for non-fossil resources Abiotic depletion (ADPE)...