Dennison Roofing & Gutter Toppers as the highest rated and credentialed Roofing Contractor in the area installs a superior leak-proof roofing system that extends the typical 30 year warranty to a 50 year 100 percent labor and material warranty backed by the manufacturer that not only saves the homeowner thousands of dollars over the lifetime of their home by eliminating the need to replace their roof every 20 to 25 years but also reduces energy costs by upgrading the insulation and installing proper ventilation in order to validate the modified rubber/asphalt class 4 hail rated shingle warranty that may also reduce a homeowners monthly insurance premium.