Australian Sustainable Hardwoods (ASH) & CLT Toolbox

ASH are the largest hardwood manufacturer in Australia. ASH control the supply chain from log to finished product. They have a design team capable of supporting projects from inception to completion with DfMA and mass timber experts. Users can design with ASH’s GLT products in calculators such as the GLT Beam, GLT Column, GLT Penetration and coming soon are connections.

Timber Unlimited & CLT Toolbox

We’re excited to announce that Timber Unlimited and CLT Toolbox have joined forces to provide advanced design software for free to the New Zealand timber industry. This collaboration aims to support engineers in implementing the new Timber Structures Standard (NZS AS 1720.1:2022) effectively.

Our goal is to make advanced timber design accessible and practical for engineers, helping to foster innovation and efficiency in the industry.

XLam & CLT Toolbox

As the first major producer of Cross Laminated Timber (CLT) in the Australia-New Zealand (ANZ) region, XLam has been a pioneering force in the industry for over a decade. This announcement holds particular significance for Adam who previously worked with XLam ANZ as a Technical Manager.

XLam Dolomiti & CLT Toolbox

Xlam Dolomiti have delivered some of the most significant mass timber buildings in Australia and across the world including Ballarat Gov Hub, Monash University Student Housing, Murdoch University, Università Loyolan Roncegno & many more.

Their comprehensive approach extends beyond just manufacturing. Xlam Dolomiti provides a full spectrum of services from design to installation, ensuring precision, efficiency, and speed in construction. Their dedication is further reflected in their careful selection of materials from sustainably managed forests underscoring a deep-rooted commitment to ecological responsibility​​​​.

KLH & CLT Toolbox

KLH, established in 1996, has been a trailblazer in helping grow the market of mass timber to what it is today. They recently commissioned their second production facility, featuring cutting-edge technology. KLH is renowned for its commitment to environmental sustainability, integrating eco-friendly practices to enhance energy efficiency and reduce waste.

Prolam & CLT Toolbox

Prolam is New Zealand owned and family grown business based in Motueka in the Nelson Region. Prolam was established orginally in 2002 by John Woodman, Managing Director and have been pioneering from the beginning, looking for ways to innovate with Timber. More than 20 years on, Prolam are an established name and brand across NZ. They are innovators not only with their products, but also with technology – so when we approached them to see if they were interested in collaborating in CLT Toolbox, they were keen to chat. Fast forward to now – and we are excited to share that you can now design with Prolam Glulam beams anywhere there is Glulam on the app – and this includes on the Free Version of the software!

Sodra & CLT Toolbox

Founded in 1938, Södra is renowned for its commitment to sustainable forestry and innovative forest products. Beyond forestry, Södra’s expertise extends to wood products, pulp, textile pulp, biofuels, tall oil, electricity, and district heating. Södra has emerged as one of the leaders in cross-laminated timber (CLT) production, championing the adoption of sustainable building materials. Their facility use fossil-free energy generated on-site, producing CLT panels with one of the lowest carbon footprints on the market. Over the course of 2024, we connected with Martin Eveborn & Daniel Anderson. Both of which have been enthusiastic supporters of our vision – with shared passion for driving infrastructure improvements for the industry. With the addition of the Swedish National Annex, Swedish language support, and Södra’s inclusion, it’s now easier than ever for Swedish engineers to design with CLT. We extend our heartfelt thanks to Södra for their collaboration as we work together to empower Swedish engineers to embrace mass timber design.

NeXTimber & CLT Toolbox

NeXTimber (by Timberlink) is a big deal for the Australian timber industry, they have recently had a number of exciting milestones, completing the construction of the NeXTimber facility in South Australia, pressing their first CLT panels and delivering GLT beams to market. They have been active supporters and contributors to the space of Mass Timber for some time, and their willingness to collaborate with us is certainly proof of their continued investment in industry movements and the space of Mass Timber. You can design with their CLT & GLT in all mass timber calculators on the software including floor design, wall design, point loads, beam penetrations & more.

Kalvasta & CLT Toolbox

We are thrilled to announce that Kalvasta Timber, a leader in engineered timber solutions, has officially partnered with CLT Toolbox!

Kalvasta Timber specializes in glue-laminated timber (glulam) and cross-laminated timber (CLT), providing high-quality, sustainable solutions for structural and architectural applications. Since 2023, they have been at the forefront of timber manufacturing, offering precision CNC processing and prefabricated timber solutions to enhance efficiency and sustainability in construction. Their commitment to responsible forestry is reflected in their FSC certification and adherence to European technical standards.

Throughout 2024, we’ve worked closely with the Kalvasta Timber team, aligning our shared vision of making timber design simpler, more efficient, and more accessible for engineers and designers. This partnership means Kalvasta’s timber products are now seamlessly integrated into CLT Toolbox, making it easier than ever for engineers to design and specify with confidence.

With advanced calculation tools, supplier integration, and continued platform enhancements, we’re driving the adoption of mass timber construction. A huge thank you to Kalvasta Timber for their trust and collaboration—we’re excited to grow the mass timber industry together!

Sterling & CLT Toolbox

We’re proud to announce our first U.S.-based CLT supplier partnership: Sterling Structural!

This collaboration began in late 2025, with early discussions between our team and Michaela Harms & Marc Rivard, SE, PE at Sterling. From the outset, we aligned on a shared mission to remove technical bottlenecks and help grow engineering capacity across the region. This partnership marks a key step in growing the pie for mass timber in North America by making specification easier and more accessible.

Sterling Structural is a leader in mass timber manufacturing across the U.S., known for their standardized design approach and high-speed production that makes CLT practical for commercial, modular, and affordable housing projects.

We’re excited to have Sterling panels now live on the CLT Toolbox platform. Engineers interested in specifying Sterling in their projects can reach out & we’re currently running a closed beta program for U.S. users.

We’d like to thank the Sterling team including Michaela, Marc, Sidney Filippis & Priscila for bringing this altogether!