

SIMCO supports owners and managers of heritage buildings through inspection, condition assessment, and the design of structural strengthening, repair, maintenance, and rehabilitation strategies that meet current code requirements. These interventions are tailored to both the preservation of original functions and the thoughtful repurposing of heritage assets.
By combining precise structural characterization with a deep understanding of heritage materials, such as wood, masonry, stone, and concrete, SIMCO delivers durable, compatible solutions. Each intervention is carefully designed to preserve the building’s identity while ensuring full compatibility with existing materials and structural detailing.

Durable, aesthetic façade restoration through concrete analysis, repair product approval, and meticulous planning in a protected heritage zone.


Structural assessment, stabilization work, and repair plan for the Gesù Church following severe damage caused by ground movement due to adjacent construction.

Structural assessment & characterization of the buildings to preserve historical elements during the functional repurposing of the Molson District.

Restoration and modernization of a historic industrial concrete plant

Condition, dynamic structural assessment and rehabilitation work of the west tower of the basilica

Since 1996, SIMCO (formerly Cosigma) has been involved in the modernization, code compliance, and preservation of the Collège de Montréal.