Ultra-lightweight Blocks

True Lite Aggregate

The Ultra Lite block is a revolutionary new block with many advantages in terms of thermal insulating, structural sound absorbing capabilities and the construction of load-bearing or non-load bearing wall designs. Moreover, Ultra Lite products are designed to offer excellent fire resistance in firewalls.

Compared to normal weight and other lightweight blocks, Ultra Lite blocks achieve additional savings owing to their low density that allows the design engineer to calculate structures based on reduced dead loads. On constructions sites, professional masons can handle and install this product more efficiently and quickly.

The result is significant savings in time and, therefore, money. The superior characteristics of Ultra Lite blocks guarantee a high level of quality in the construction of lightweight concrete masonry works. Ultra Lite blocks can be used indoors and outdoors and are a premium quality product for lightweight masonry work.

Ultra-lightweight concrete block


Ultra Lite concrete blocks are manufactured from high quality materials in one of the most modern plants in Canada. They are produced solely using expanded blast furnace slag which gives them exceptional technical characteristics unequalled by other products.

Sizes and shapes

The blocks or modular units have a face with nominal dimensions of 190 mm x 390 mm. Thicknesses range from 10 cm to 15 cm, 20 cm, 25 cm and 30 cm. We offer a range of standardized Ultra Lite units in regular and special shapes.


The products comply with Standard CSA 165.1m2004. Their characteristics exceed the characteristics defined in the quality assurance program of the Canadian Concrete Masonry Producers Association.


The use of all Groupe MBM products is limited solely by their specifications and the requirements of the structures in which they are employed. Upon request and for a given product, the specifications can be adapted to meet the needs of a specific project.