Sentry Exteriors is recognized as a Virginia Class A Contractor. We offer the most reliable products on the market, using manufacturers like Royal, Crane, Leaf Solution, WinCore and Simonton to ensure the highest quality. Our professional and qualified representatives will walk you through our personal and convenient Free Easy Estimate Service. Our 20 years of experience combined with our 10-Year Workmanship Guarantee is why you can trust Sentry Exteriors to deliver Dependable Quality. Guaranteed. If at any time within 10 years after Sentry Exteriors installs your new gutters, windows, doors, siding or decking, a problem arises that can be attributed to the quality of installation, Sentry Exteriors will correct the problem. Guaranteed.