The right fix for a wet basement is exterior waterproofing Innisfil homeowners can rely on for the long term: stop the water outside the wall, not after it gets in. GDS Landscaping and General Contracting excavates to the footing, repairs and seals foundation cracks, applies a waterproof membrane with drainage board, installs new weeping tile and finishes with careful backfill and grading. Call us for a free on-site assessment anywhere in Innisfil and Simcoe County. See our Innisfil landscaping page and our main exterior waterproofing page for the full service.
If you are seeing damp walls, musty smells or water after heavy rain, call GDS at 647-767-1986. We bring 12 years of industry experience to every assessment, we will explain what is happening at your foundation in plain language, and every waterproofing project is backed by our 4-year limited workmanship warranty.
Our Exterior Waterproofing Process
- Excavation and inspection. We expose the foundation down to the footing and assess the wall, cracks and existing drainage honestly.
- Preparation and crack repair. The wall is cleaned, and cracks and weak points are sealed before any membrane goes on.
- Membrane and drainage board. A waterproof membrane plus drainage board protects the wall and directs water down to the drainage system.
- Weeping tile and drainage. New perimeter drainage carries groundwater to a sump or storm outlet, away from the home.
- Backfill and grading. We backfill carefully and reshape the surface so rain and meltwater slope away from the foundation.
These steps are a system, not a menu. Membrane without drainage lets water build pressure against the wall; drainage without sealing leaves cracks open. Building it in the right order, with one crew responsible for the whole job, is what makes the result last.
Built for Innisfil & Simcoe County Conditions
Simcoe County’s clay-heavy soils hold water against foundations, and each freeze-thaw cycle works small cracks a little wider. Around Innisfil, many homes are newer builds whose drainage and grading were basic from the start, while lakeside and low-lying properties near Lake Simcoe can see high water tables and heavy spring melt. Whether the home is in Alcona, along the shoreline or on a rural lot, the answer is the same: seal the wall, give groundwater a proper path away and grade the surface so water does not return. We build every system for those conditions.
What’s Included in Exterior Waterproofing
- Foundation waterproofing membranes. A seamless barrier applied to exterior foundation walls to keep water out.
- Weeping tile installation and replacement. Perimeter drainage that actually moves groundwater away from the house.
- Sump pump installation. Added protection where water tables run high or gravity drainage needs help.
- Foundation crack repair. Cracks sealed properly before they become leaks.
- Grading and drainage correction. Soil reshaped so surface water flows away from the foundation.
- Window well drainage. Basement window wells kept from collecting and admitting water.
Signs Your Innisfil Home Needs Exterior Waterproofing
- Damp spots or water stains on basement walls or floor
- White, powdery residue forming on concrete
- Musty odours that return no matter how often you air the basement out
- Visible foundation cracks, inside or out
- Water pooling against the foundation after rain or snowmelt
- Window wells that fill instead of draining
If any of that sounds familiar, a free assessment is the right next step. Fixing the exterior early protects finished basements, stored belongings and the structure itself, and costs far less than repeated interior repairs. Our project photos page shows the kind of work we do.
What to Expect During the Work
Because exterior waterproofing means excavating along the foundation, we plan access, soil management and the work sequence with you before digging starts. We confirm which walls are included, talk through how plantings, decks, walkways and driveways next to the house may be affected, and keep you informed as the wall is exposed and inspected. If we uncover a condition that changes the scope, we show you what we found and review options before going further. After the membrane, drainage board and weeping tile are installed, we backfill with care and finish with grading that moves water away. A final walkthrough explains each layer, so you know exactly what is protecting your basement even though it is below ground.
A Local Note for Innisfil
Innisfil has grown fast around Alcona and along the Lake Simcoe shoreline, and many homes here are newer, which creates a common misconception: that a newer foundation cannot leak. In reality, basic builder drainage, settled backfill and grading that slopes the wrong way can send water to the wall within a few seasons. Lakeside properties add high water and wind-driven rain to the equation. Assessing grading and downspout discharge, and fixing problems at the exterior wall, is how Innisfil homeowners keep finished basements dry and protect the investment they have made in their homes.
Exterior Waterproofing Pricing — Innisfil & Simcoe County
| Service | Price |
|---|---|
| Exterior foundation waterproofing (excavation, membrane, drainage) | from $90 / linear ft |
Final pricing depends on foundation depth, soil conditions, access and the drainage work needed. We confirm the entire scope in a free on-site assessment and written quote before work begins. Our cost guide offers helpful context for planning.
Exterior Waterproofing FAQs — Innisfil & Simcoe County
How much does exterior waterproofing cost in Innisfil?
Exterior waterproofing with GDS starts at $90 per linear foot, with excavation, membrane and drainage set out in your quoted scope. Foundation depth, soil, access and drainage requirements determine the final price, confirmed by a free assessment and written quote.
Is exterior waterproofing warrantied?
Yes. Every project carries our 4-year limited workmanship warranty, supported by 12 years of industry experience across excavation, membrane application, drainage and grading.
Which areas do you serve?
We are based in Barrie and serve Innisfil and communities across Simcoe County, including Orillia, Collingwood, Midland, Wasaga Beach, Bradford and New Tecumseth. Our Innisfil page describes our other local services.
How long does exterior waterproofing take?
It depends on how much foundation is being treated, along with depth, soil and weather. After your assessment we will lay out the schedule and sequence, from excavation and inspection through membrane, drainage, backfill and final grading.
Get a Free Exterior Waterproofing Quote in Innisfil
Do not let a damp basement become a damaged one. We bring 12 years in the trade to Innisfil waterproofing, and every project is backed by our 4-year limited workmanship warranty. Call or text 647-767-1986 for your free assessment, or send your details through our quote form.