Ontario Government to Permit Encapsulated Mass Timber Construction up to 18 Storeys

In a recent announcement, the Ontario government revealed plans to amend the Building Code to allow for encapsulated mass timber construction up to 18 storeys, an increase from the current limit of 12 storeys. This move is aimed at speeding up home construction, minimizing noise, and reducing construction times while maintaining fire and structural protection standards.

By expanding the use of mass timber, the province hopes to leverage initiatives like Ontario’s Forest Sector Strategy to encourage offsite construction and utilize renewable forestry resources for more efficient and rapid building. A national consultation involving Ontario, British Columbia, and Quebec in early 2024 sought feedback on potential building code changes related to mass timber construction, with a multi-province joint task group analyzing the results.

Minister of Municipal Affairs and Housing Paul Calandra emphasized the benefits of mass timber construction, stating that it can help increase housing supply, lower construction costs, and stimulate the northern economy. Encapsulated mass timber involves treating manufactured wood components with fire-rated materials such as drywall for enhanced safety.

The Ontario Forest Industries Association expressed support for the government’s decision to expand the use of advanced wood construction, highlighting the positive impact on home construction, cost reduction, and various sectors like forestry, technology, engineering, and manufacturing.

Overall, the move to permit encapsulated mass timber construction up to 18 storeys demonstrates Ontario’s commitment to innovation and efficiency in the construction industry, paving the way for sustainable and resilient building practices in the province.

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