The BEST Window Cleaners in the GTA! We also mentor youth towards living better lives. Low Rise Commercial, Government and Residential. 1-877-208-4473. Our professional, trustworthy, and reliable technicians have been providing Window Cleaning, Gutter Cleaning, Pressure Washing and Graffiti Removal services since 1990. We offer the “50 hour Tiger Guarantee” on every job we perform. If we have missed something call us within 50 hours of your job’s completion and we’ll come back to your site and fix it right away. It’s that simple. Tiger Building Services specializes in Low Rise Building Services. If you are looking for an expert for Residential, Commercial, Post Construction, or Government and Infrastructure Cleaning call us today at 1-877-208-4473