Crownseal Inc. is a family owned and operated business, successfully serving clients in Southern Ontario for over 20 years. 100% of operation is foundation waterproofing & repairs. We are specialists and offer several different solutions to meet your needs. We employ TOP OF THE LINE PRODUCTS, and will give you the best case solution...every time! Offering both interior and exterior waterproofing options, our customer base is extensive and consists of residential, contractors, real estate, insurance, home inspectors, property management, government shelters & youth centres, home service clubs. All work is backed by a 25 year warranty on exterior and 15 years on interior.