Email: info@thomasexcavation.net
Call: 778 678 7374
Perimeter Drains & Waterproofing
Protect Your Foundation from the West Coast Wet
In Greater Victoria, it’s not a matter of if it will rain, but where that water goes. A failing perimeter drain system can lead to basement dampness, mold, and structural damage. We specialize in the diagnostic, repair, and full replacement of drainage systems to keep your home bone-dry year-round.
Our Drainage Services Include:
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Full Perimeter Drain Replacement: Swapping out old, clogged clay tiles for modern, perforated PVC systems.
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Foundation Waterproofing: Applying high-grade bituminous membranes or "Blue 70" barriers to foundation walls to stop moisture at the source.
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Rain Lead & Storm Sewer Repair: Ensuring your gutters are successfully diverting water away from your foundation and into the municipal system.
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Sump Pump Installation: Excavating and installing sump pits and discharge pumps for low-lying properties.
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Camera Inspections & Hydro-Jetting: Diagnostic scoping to find the exact blockage and high-pressure flushing to clear debris.
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French Drains & Curtain Drains: Diverting surface water and groundwater away from problem areas in your yard.
Why "Tight Access" is a Game Changer for Drains
Most perimeter drains are located in the narrowest parts of your property—the side yards.
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The 39-Inch Solution: While other companies might tell you a fence or a shed has to be torn down to get a machine in, our John Deere 17G can squeeze into those tight corridors.
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Minimizing Restoration Costs: Because our equipment is small and runs on rubber tracks, we don't leave a "war zone" behind. This saves you thousands in landscaping and driveway repairs once the drainage work is done.
Signs Your Drains Are Failing:
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A persistent "musty" smell in the basement or crawlspace.
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Efflorescence (white, powdery staining) on concrete foundation walls.
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Puddles forming against the house after a heavy rain.
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Slow-draining interior floor drains.
The Anatomy of a Dry Basement
We don’t just "bury a pipe." A professional drainage system requires a specific layered approach to ensure it doesn't clog again in five years:
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The Trench: Excavated to the footing level (where your 17G shines in those narrow side yards).
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Waterproofing: Cleaning the foundation and applying a waterproof sealant or dimpled membrane.
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The Pipe: Installing perforated PVC (SDR 35) with the correct "fall" so water actually flows away.
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The Drain Rock: Surrounding the pipe with clear-crush gravel to act as a primary filter.
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Filter Fabric: A "burrito wrap" of geotextile fabric to keep Victoria's heavy clay and silt out of your new pipes.