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Basement Waterproofing
Basement Dehumidifier
Basement Mold Remediation
Basement Sealing
Basement Seepage Solutions
Basement Wall Repair
Drain Tile Installation
Dry Basement Systems
Exterior Waterproofing
Flooded Basement Repair
Foundation Waterproofing
French Drain Installation
Interior Waterproofing
Leaky Basement Repair
Sump Pump Drainage
Sump Pump Installation
Sump Pump Repair
Sump Pump Battery Backup
Wet Basement Solutions


Crawl Space Repair
Crawl Space Access Doors
Crawl Space Dehumidifier
Crawl Space Drainage
Crawl Space Encapsulation
Crawl Space Insulation
Crawl Space Liner
Crawl Space Moisture Barrier
Crawl Space Moisture Control
Crawl Space Mold Removal
Crawl Space Sealing
Crawl Space Sump Pump
Crawl Space Vapor Barrier
Crawl Space Ventilation
Crawl Space Waterproofing
Other Services
Concrete Coating
Foundation Repair
Carbon Fibre Reinforcing
Before and After Pictures from Duncan
Rim joist repair in Duncan BC

Rim joist repair in Duncan BC

Before After
Rim joist repair in Duncan BC Rim joist repair in Duncan BC

This crawlspace was a typical 1970s construction; concrete skim coat on top of a poorly install poly sheet, exterior vents, and the insulation was minimal at best. The rim joist cavities did not have any insulation, air barrier, or vapor barrier installed. The dampness wicking through the concrete skim coat was condensing on the cold rim joists, which resulted in them rotting out, getting moldy, and interfering with the smooth sale of this home. Island Basement Systems was called to provide a solution once the Home Inspector found the issues during the buyer's home inspection.


Our method of repair was to remediate the crawlspace to prevent this from happening again and to replace the rim joist with new materials.


CleanSpace encapsulation liner to provide a permanent ground seal, Elastochem Extreme closed cell spray foam insulation on the exterior walls, (closing off the passive vents too), new rim joist, and mechanical timed ventilation. Mission accomplished, and the crawlspace is now a conditioned space that is clean, dry, energy-efficient with good indoor air quality.


Before photo: the rotted rim joist.


After photo: this is actually the 'during' process where we replaced the rim joist. Don't let this happen to your home. Condition your crawlspace, and save energy, time, money, and a lot of stress!

Company Awards
Basement Systems 10 Year Dealer Award
To certify that Island Basement Systems has reached the milestone of 10 years as an authorized Basement Systems Dealer.... [Read more]
CleanSpace Installer Award
In recognition of Island Basement Systems having installed 1 million square feet of CleanSpace.... [Read more]
More Awards

Duncan, BC Dependable Basement Waterproofing & Sump Pump Repair

We needed to have it done for medical reasons (mould showing) plus you were recommended by Ken Steinback of Classic...
Happy Customers Surrounding Duncan, BC

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Reviews From Duncan
Testimonials From Duncan
Satisfaction with the previous pump installation and follow-up.
Testimonial by Tom & Marilyn C. from Duncan, BC
Osborne Realty gave you an excellent reference
Testimonial by Ted V. from Maple Bay, BC
Better, cheaper and easier than some form of me doing the work myself.
Testimonial by Christie and Mike D. from Maple Bay, BC

Expert Basement Waterproofing & Crawl Space Encapsulation Company Serving Duncan, BC

Storms, flooding, and unsealed crawl spaces can lead to water intrusion in your basement and foundation as well as mold growth, rodents, and insects in your crawl space. If you're getting moisture in your basement or you’ve got a wet crawl space, you need a basement foundation repair company you can trust. Island Basement Systems is a well-known name in the foundation repair and basement waterproofing industry. When you use us you can expect professional service and, since we are a Basement Systems dealer, you can expect access to the best products and trusted solutions around. Musty crawl spaces, flooding basements, and crumbling foundations are issues our expertly trained crews manage all of the time. Island Basement Systems offers first-rate customer service and solutions you can rely on.

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We Offer Top Services in Duncan, BC:

  • Basement Waterproofing
  • Crawl Space Repair
  • Foundation Repair
  • Carbon Fibre Reinforcing
  • High-Quality Sump Pumps
  • Radon Mitigation
  • Commercial Services

Duncan, BC's Top-Notch Basement Waterproofing & Crawl Space Repair Contractors

Any level of flooding in your basement is a problem. However, even if you only damp walls or musty smells around your basement or crawl space it’s time to call the professionals. There are plenty of satisfied customers all over Duncan who are living well with Island Basement Systems’s tried and true basement waterproofing, crawl space encapsulation, and foundation repair solutions. Our professionals install top-of-the-line sump pumps, dehumidification systems, and vapor barrier products and perform crack repair services as well. We will work fast to turn your basement and crawl space into a safe, secure, and dry area that will protect your home for years to come.

We Provide:

You Receive:

  • A Dry Basement or Crawl Space
  • Controlled Humidity
  • Mold Mitigation
  • Lifetime Transferable Warranty
  • Secured Home Value
  • Peace of Mind

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Enduring Foundation Repairs

Foundation issues can cost a small fortune since they can lead to the need for structural repairs on your home. Don’t wait! If you have moisture in your crawl space, or bending walls in your basement, the time to fix it is now. Island Basement Systems uses the top foundation repair products and methods the market has to offer, including carbon fibre reinforcement systems. Whether your foundation has cracks, bowing walls, is sinking, or even something worse, we can help. Our dedicated professionals will perform a detailed inspection of your home, diagnose the problem, and guide you through your options to repair and protect your home in the long term.

Offering Foundation Solutions for:

  • Bowing Walls
  • Uneven Floors
  • Wall Cracks
  • Settling Foundation
  • Doors that Won't Close

The time is now. Protect your home from mold and water damage. Call 1-855-206-4811 or use our online form to contact Island Basement Systems today and schedule your no-cost estimate in Duncan, BC

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Case Studies From Duncan
The rim joist of this crawlspace was rotted due to condensation forming, which was a major structural issue. Condensation forms on rim joists through...

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