Mortar

The crucial binding material that holds bricks and stones together while allowing natural building movement. In Ontario, mortar selection is critical due to freeze-thaw cycles requiring specific flexibility and permeability. Heritage buildings often used lime-based mortars that self-heal minor cracks, while modern construction typically uses Portland cement mortars for strength. Signs of mortar problems include cracking, crumbling, or gaps that allow water infiltration. Professional mortar analysis ensures repairs use compatible materials that won't damage existing masonry while providing long-lasting protection.