
A duplex in the Plateau and a century-old house in Westmount have nothing in common. Neither the materials, nor the techniques, nor the regulations. MBNL adapts its approach to the building you have, because the wrong mortar on the right wall is worse than nothing.
The freeze-thaw cycles in Montreal, the heritage regulations of Westmount, the real estate boom on the North Shore. We don't work the same way everywhere. That's what local expertise is all about.

Your red bricks from the 1920s to the 1960s go through more than 30 freeze-thaw cycles each winter. The joints crumble, water seeps in, the walls bulge. The problem is diagnosed on site, free of charge. The joints are redone with a mortar compatible with the original, never Portland cement, which would cause your bricks to burst. Damaged sections are replaced with old, fitted stock for an undetectable finish.

The buildings in Laval from the years 1970 to 1990 are aging, and the yellow brick typical of this period requires specific maintenance. The mortar sold in hardware stores is not compatible: it cracks, retains water and accelerates degradation. Based at 635 Guillemette Street, Laval is our backyard.

Westmount imposes an Architectural Implementation and Integration Plan (PIIA). All facade work must be approved by the district and carried out in the original materials. Natural lime mortar is used, the only product compatible with old masonry. We manage the PIIA compliance file from A to Z.

Fine clay brick facades, ornate cornices, ashlar details. We join with a mortar specifically formulated for original mixtures from the years 1910 to 1940. We work in compliance with Outremont regulations, without you having to manage the paperwork alone.

The North Shore is the fastest growing sector in Greater Montreal. MBNL has been active on new construction sites since day one. For existing buildings, the first signs of degradation are beginning to appear on buildings from the years 1980-2000: we intervene before small problems become major renovations.
A Portland cement mortar on a 1910 rubble stone foundation retains moisture. The stone is falling apart. We end up with a foundation that has to be completely redone, and a bill ten times higher. The right expertise is what makes the difference between a repair and a disaster.
License 5792-7261-01. License 4.1 Masonry Structures, not 4.2 concrete. Verifiable online on the register of the Régie du Bâtiment.
Lime mortar for heritage. Matching bricks. Limestone. The right material for the right wall, every time.
Free travel in all our areas. Detailed written submission with photos and recommendations. No commitments.
Each contract includes a written warranty that specifies exactly what is covered and for how long.
No vague promises. When you sign each contract, you receive a written guarantee that specifies exactly what is covered and for how long — depending on the type of work being done. At MBNL, you always know what to expect.