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The Problem
Homeowners on Glenmore Road in Toronto’s vibrant Beaches neighborhood wanted to transform their low-clearance cellar into a highly functional, open living space. However, properties in The Beaches often sit on sandy soil compositions due to their proximity to Lake Ontario, making any earth removal a delicate procedure. Simply digging out the basement was not an option, as the original, aging foundation required substantial reinforcement to safely support the home while the sub-grade space was opened up and deepened.
Our Professional Assessment
Our structural assessment confirmed that to successfully achieve the desired transformation, we needed to rebuild from below. Because of the localized sandy soil and the age of the structure, mass excavation would compromise the home’s stability. Instead, the project demanded a highly controlled, precise method to extend the foundation downward. By working systematically, we could safely increase the depth of the footprint while ensuring the overarching structure remained fully stable throughout every phase of the transformation.
The Solution We Recommended
To create the base for a stronger foundation and a functional lower level, we implemented a rigorous structural plan:
- Section-by-Section Excavation: This is one of the most critical phases of the project. We excavated the earth beneath the existing footings in strict mathematical phases, never exposing too much of the foundation at once to ensure absolute stability in the sandy soil.
- Rebuilding From Below: As each section was cleared, we poured high-strength concrete to form a new, deeper footing. We used non-shrink dry pack grout to seamlessly transfer the structural load from the old foundation to the new extended base, adhering to City of Toronto structural permit requirements.
- Continuous Shoring & Stabilization: Temporary steel supports were strategically utilized to carry the house’s weight securely while the underlying foundation was extended deeper.
- Sub-Grade Moisture Defense: Recognizing the high water tables typical of The Beaches, we integrated a perimeter weeping tile and sump system to keep the newly opened space permanently dry.
This process takes precision, time, and the right engineering protocols to make sure everything is executed safely and correctly.
The Results
- Functional Space Created: The transformation successfully opened up the area, providing the necessary vertical clearance for a comfortable, modern living space.
- Stronger Foundation: By rebuilding step-by-step from below, the Glenmore Road home now rests on a vastly upgraded, reinforced concrete structural footprint.
- Uncompromised Stability: The meticulous section-by-section approach ensured the home remained fully stable and secure throughout the entire depth increase process.
- Waterproofed Envelope: The new depth is protected by a commercial-grade interior waterproofing envelope, shielding the space from lake-adjacent ground moisture.
Looking to open up your basement in The Beaches? Contact our experts today to discuss how our precise structural foundation support process can safely transform your home.
