Sentry Exteriors is proud to announce that we are currently working with Tye River Elementary School is replacing there old worn shingles and replacing them with new GAF 30 year warranty Timberline High Definition Shingles. The shingle is a great quality shingle with “Value And Performance In A Distinctive Wood Shake Look”. The architectural shingles are under laid with GAF Deck-Armor (as seen in Picture) is the best roof deck protection system available. Please click the link available for more specs and details.