Crawlspace repair in West Broadway

West Broadway is dense, close to the Assiniboine River, and built overwhelmingly before 1920. Housing includes large converted homes, small single-family houses and low-rise apartment blocks, and the foundations reflect their age: stone and early concrete, shallow by modern standards, with no damp-proofing and no vapour barrier against the soil. Crawl areas are common under rear additions and beneath portions of older homes that were never fully excavated.

Proximity to the river keeps groundwater relatively high, and the clay soil holds water against these old walls through spring and early summer. The conditions we find are consistent: efflorescence and salt deposits on masonry, damp or wet soil floors in crawl areas, rot at the base of posts and at sill plates, and musty air moving upward into the living space through floor openings and service penetrations. In many of these houses, the crawlspace is the primary source of the humidity and odour problems that occupants notice on the main floor.

Because much of the housing here is rental or converted into multiple units, access and sequencing matter. We work to isolate the crawlspace from the occupied space first — sealing the floor openings and penetrations that let crawlspace air into the building — then address water with drainage where needed, then encapsulate and insulate so the space is stable. For heritage masonry we choose details that manage moisture rather than trap it, and we document conditions thoroughly for owners who need to plan work over more than one season.

West Broadway calls frequently come from landlords and owners of converted multi-unit buildings, and the complaint is usually air quality: a persistent musty smell affecting units above a damp crawl area. Because the stack effect pulls crawlspace air upward continuously through the heating season, one unaddressed space can affect every unit in the building.

Our first recommendation for these buildings is to isolate the crawlspace from the occupied floors — sealing floor penetrations, duct chases and access hatches — because that produces the fastest meaningful improvement for tenants. Water management and encapsulation follow. We also document conditions thoroughly for owners who need to plan work across more than one budget season, which is the usual situation with older rental stock.