"cavity barrier"

OverviewSet in the heart of downtown Toronto, the Ontario Court of Justice is the largest courthouse in Ontario and a benchmark for contemporary institutional construction. Completed in 2024, the project brings together 63 courtrooms and 10 conference settlement rooms in a LEED® Gold certified facility that reflects modern civic values—transparency, accessibility, and sustainability.Master Builders Solutions Canada Inc. played a key role in ensuring the structural concrete met the performance demands of this high-profile project.The ChallengeDelivering nearly 48,000 m³ of ready-mixed concrete in a downtown location posed numerous technical challenges. The structural design demanded high compressive strength, consistent workability, and durability to support complex load paths, security zones, and a tall atrium enclosed by a 20-metre glass façade.The project team required concrete solutions that would:Maintain workability over long pumping distances and vertical placements,Ensure strength development for critical structural zones (such as core walls and transfer slabs),Limit thermal cracking during curing in massive pours,Integrate seamlessly with staged slipform and rebar installation schedules.These demands were intensified by the need to meet LEED® Gold sustainability targets, tight construction timelines, and high public visibility.The ResultsMaster Builders Solutions Canada Inc. partnered closely with St Marys CBM to optimize concrete performance across all phases of construction. A suite of high-performance admixtures—including water reducers, retarders, and strength-enhancing additives—was deployed to address the project’s structural and logistical complexities.Key contributions included:Enhanced workability retention for long-distance pumping and complex placements, reducing placement time and labour.Improved early- and long-term strength development, enabling faster formwork cycling and reliable performance in high-load areas.Mitigated thermal buildup in mass pours to control cracking and ensure durability over the structure’s lifecycle.Admixture compatibility with supplementary cementitious materials (SCMs), aligning with the project’s environmental goals.By tailoring admixture solutions to the precise performance needs of each mix design, Master Builders Solutions supported consistent quality and efficiency throughout the build.The Ontario Court of Justice now stands not only as a civic institution but also as a demonstration of what is possible when modern structural design and advanced concrete technology are brought together. The project exemplifies how Master Builders Solutions helps construction teams deliver on performance, sustainability, and long-term value.

MAPEI’s self-leveling underlayment, Novoplan 2, was used to prepare the floors of the Shangri-La Hotel condos to receive stunning oak planks from Italy. The wood was installed using Ultrabond ECO 995 adhesive with built-in sound reduction and moisture barrier characteristics.

The new Robert B. Aikens Commons at the University of Michigan Law School was built on an unused grassy courtyard between Hutchins Hall and the legal research building. The proximity of the new common area to historic Hutchins Hall posed a unique challenge. The building code required a 2 hour fire rated barrier between them. The architects specified SuperLite® II-XL 120, a clear, fire resistive glazing product that meets the ASTM E-119 wall standard for up to 2 hours.

Introduction Prefinished sheet steel building products, such as wall and roof cladding, liner sheet, flashing, and associated items, have experienced an enviable growth record during the past twenty years or so. Coil coated prefinished sheet steel in a variety of colours and paint systems has greatly enhanced the appearance of thousands of industrial, commercial, institutional, recreational, residential and farm buildings, providing an economical, durable and attractive alternative to traditional materials. As with all materials, a little care and maintenance pays off handsomely in terms of longevity and repair costs. The recommendations which follow have been learned at first hand and represent the collective industry experience with thin-film paint systems applied to metallic coated sheet steel by the coil coating process. In this publication the term “thin-film paint system” refers to a modified silicone polyester or a fluorocarbon type having a coating thickness about 25µm. When the guidelines listed below have been observed, thin-film paint systems have been used successfully for all types of environments other than severe industrial atmospheres which require special consideration. The guidelines are not intended for barrier coatings, laminates, and new formulations which have different characteristics than the thin-film paint systems on which these guidelines are predicated.