Licensed & insured · Same-day service · Free estimate. Serving Commerce Valley and all Markham neighbourhoods.
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Interior and exterior waterproofing systems to permanently stop water infiltration in Ontario clay-soil conditions.
Polyurethane and epoxy injection for poured concrete cracks. Stops leaks and restores structural integrity.
Sump pump installation, battery backup, and weeping tile replacement to manage groundwater and drainage.
Window well installation, drainage and egress window cutting for basement bedrooms and code compliance.
Wet basement or foundation crack in Commerce Valley? Ontario's clay soil and freeze-thaw cycles put unique pressure on foundations. Our waterproofing specialists in Commerce Valley, Markham ON provide free inspections and permanent solutions — interior drain systems, crack injection and exterior membranes.
Every job in Commerce Valley starts with a free inspection. We use Tremco, BASF, Dryvit materials and provide a written, itemized quote. Our waterproofing warranty is transferable if you sell your home — a real asset that shows buyers the problem is resolved.
Whether you're in the heart of Commerce Valley or just off its borders near Unionville, Thornhill, Milliken, our team knows the area. We serve homeowners and businesses across Markham — so when you call, you get a local technician who knows local building codes and local suppliers, not a dispatcher routing you to a subcontractor from across town.
All Markham neighbourhoods →Ontario's heavy clay soil expands when wet and shrinks when dry, creating pressure on foundation walls. Combined with spring thaw and heavy rain, cracks form and water finds its way in. Proper waterproofing addresses the soil pressure, not just the crack.
Exterior waterproofing stops water before it touches your foundation — it's the gold standard. Interior systems manage water that gets in. The best solution depends on your specific situation; we explain both options with pricing at the inspection.
Crack injection and waterproofing typically don't require a permit. Structural repairs, underpinning or significant excavation may. We handle the permit process for any work that requires it.
A properly installed interior drainage system lasts 20–30 years. Exterior membrane systems, when done correctly, can last the life of the structure. We back our work with a written warranty.
Standard home insurance typically covers sudden water damage but not gradual seepage or maintenance-related failures. We can provide documentation to support any eligible claim.
For most bookings we can arrange a same-day or next-day visit. Emergency calls are dispatched as a priority and we aim to arrive within a few hours.
We offer a free estimate — there is no charge to come out, diagnose the issue and provide a written quote. You decide whether to proceed before any work begins.
Free estimate, no obligation. Serving Commerce Valley and surrounding Markham neighbourhoods.