Ontario Foundations — 40+ years protecting London homes. Expert foundation repair, basement waterproofing, and structural services engineered for Ontario’s 1.2m frost depth and thick glacial till clay (Port Stanley Till) over limestone bedrock soil conditions. Licensed, insured, and local.
London's foundation challenges stem from its position at the confluence of the Thames River's north and south branches, combined with some of the thickest glacial clay deposits in southwestern Ontario. The Port Stanley Till that blankets the London area was deposited during the last glacial advance approximately 15,000 years ago, creating a dense, impermeable clay layer that dramatically affects how water interacts with foundations. When surface water cannot percolate through this clay, it migrates laterally along the soil-foundation interface, building hydrostatic pressure that can exceed the structural capacity of unreinforced basement walls. The Ontario Building Code requires frost protection to 1.2 metres in London, but the combination of heavy snowfall from Lake Huron's moisture influence and the clay's thermal conductivity means frost penetration can reach depths that stress older, shallower footings—particularly in homes built before the 1975 code revisions.
Every foundation service we deliver in London is engineered for the local soil profile (thick glacial till clay (Port Stanley Till) over limestone bedrock), the 1.2m frost line, and the drainage patterns created by the Thames River (North and South branches). Here’s what we offer:
Crack repair, settlement correction, and structural restoration for all foundation types.
Learn More →Interior and exterior waterproofing systems including French drains, sump pumps, and membrane installation.
Learn More →Carbon fiber straps, steel I-beams, and wall anchors to stop bowing, leaning, or shifting walls.
Learn More →Encapsulation, vapor barriers, structural support, and drainage to protect against moisture and mold.
Learn More →Professional sump pump systems with battery backup for reliable basement water management.
Learn More →Thorough professional assessments with detailed reports for buyers, sellers, and concerned homeowners.
Learn More →Structural underpinning to deepen or strengthen existing foundations using helical or push pier systems.
Learn More →Driveway, walkway, patio, and garage floor levelling, crack repair, and resurfacing.
Learn More →Weeping tile replacement, downspout extensions, grading correction, and drainage solutions.
Learn More →London's location at the forks of the Thames River creates one of the most flood-prone urban environments in Ontario. The devastating 1937 flood and subsequent events have shaped the city's relationship with water, but many homes—particularly in the Old North neighbourhood and along the river corridor through Gibbons Park—continue to face elevated water table conditions that stress foundation walls year-round. The Port Stanley Till clay that underlies most of London is among the densest and most expansive glacial deposits in southwestern Ontario, with plasticity indices frequently exceeding 25. This means London foundations endure substantial seasonal movement as clay swells during wet springs and contracts during dry summers, creating the classic stair-step crack patterns visible on older brick homes throughout Wortley Village and Old South.
Victorian-era homes (1870–1920) in Old North and Wortley Village, post-war expansion (1950–1980) in White Oaks and Westmount, and modern subdivisions in Byron and Hyde Park — these homes are particularly susceptible to the following foundation warning signs:
We’ve refined our process over 40+ years to deliver reliable results for London homeowners. Every project follows these six steps:
A licensed technician visits your London property to inspect all accessible foundation areas, document issues, and assess the scope of work needed.
You receive a written estimate with transparent pricing, recommended solutions, materials specified, and a clear timeline. No hidden fees, no pressure.
We handle all required London building permits, utility locates, and site preparation. Our team coordinates everything so you don’t have to.
Our experienced crew executes the repair using methods calibrated for London’s thick glacial till clay (Port Stanley Till) over limestone bedrock soil and 1.2m frost conditions. Quality materials, clean worksite.
A final inspection verifies all work meets Ontario Building Code standards and our internal quality benchmarks. We photograph completed work for your records.
You receive a written warranty (many services include transferable lifetime warranties), maintenance guidance, and our commitment to long-term support.
Don’t let budget stop you from protecting your home. We offer flexible payment plans for London homeowners. Ask about our financing options during your free estimate.
Most foundation repairs include our transferable lifetime warranty — it stays with the house if you sell. This adds real value to your London property.
Our foundation repair and waterproofing teams serve all areas throughout London, including:
Don’t see your neighbourhood? We likely serve it. Call (647) 724-5090 to confirm service in your area.
Answers to the most common questions London homeowners ask about foundation repair, waterproofing, and costs.
Need foundation repair or waterproofing in a nearby area? We serve all these communities:
Foundation damage only gets worse with time. Every freeze-thaw cycle, every rainstorm, every season adds stress to an already compromised structure. The repair that costs $2,500–$18,000 CAD today could cost 3–5x more if left unaddressed.
Available 24/7 for emergencies. Free estimates. No obligation.