About Carl McDowell
Carl McDowell is a seasoned waterproofing specialist and senior consultant at Canada Waterproofers, bringing over 28 years of hands-on experience protecting homes across the Greater Toronto Area.
As a licensed Master Plumber with specialized experience in below-grade waterproofing systems, Carl has overseen thousands of foundation assessments and waterproofing installations throughout Toronto, Mississauga, Brampton, Oakville, Vaughan, and surrounding communities.
With a deep understanding of the unique challenges facing GTA homeowners — from clay-rich soil composition and high water tables to aging infrastructure and extreme weather patterns — Carl combines technical expertise with practical advice homeowners can actually use.
Professional Expertise
Foundation Waterproofing
Exterior and interior basement waterproofing systems designed for long-term protection.
Drainage Solutions
French drain installation, weeping tile systems, and sump pump installations.
Foundation Repair
Crack repair, structural assessment, and foundation restoration.
Water Intrusion Diagnosis
Comprehensive assessments identifying root causes of basement moisture.
Plumbing Services
Backwater valve installation, drain repair, and emergency plumbing.
Building Science
Understanding hydrostatic pressure, capillary action, drainage, and soil behaviour.
Qualifications & Certifications
- Ontario College of Trades Licensed Plumber — License #13947296
- Master Plumber Certification — Ontario, Canada
- IICRC Water Damage Restoration Technician
- Building Renovation License
- Drain Layer License
- Preferred Contractor for Halton Region
- WSIB Coverage
- BBB Accredited Business with A+ Rating
- HomeStars Best Of Award recipient
Areas of Service
Carl and the Canada Waterproofers team serve homeowners throughout the Greater Toronto Area, including:
- Toronto and surrounding boroughs
- Mississauga, Oakville, and Halton Region
- Brampton, Vaughan, and York Region
- Scarborough, North York, and East GTA
- Hamilton, Burlington, and surrounding areas
- Uxbridge, Milton, and extended GTA communities
Professional Approach
Comprehensive Assessment Process
Before recommending any waterproofing system, Carl conducts a structured on-site assessment that may include:
- Soil Analysis: Reviewing clay concentration and drainage capacity around the foundation.
- Moisture Readings: Checking interior and exterior moisture conditions.
- Foundation Inspection: Assessing poured concrete, block, or stone foundations, visible cracks, efflorescence, and cold joints.
- Drainage Evaluation: Reviewing sump pump performance, weeping tile condition, and exterior grading.
Commitment to Education
Carl believes informed homeowners make better decisions. Every project includes clear explanations of what is happening, why it is happening, and what solution makes sense.
Client Testimonials
"Carl was very professional and he knew his stuff. The crew that worked on my project were just amazing."
"Carl and Slava were just amazing and the knowledge that they have is just incredible."
"Carl was a pleasure to work with. The quality of waterproofing was great and I would recommend them to anyone."
Contact Information
Free estimates available. Licensed, insured, and backed by a fully-transferable lifetime warranty.