Duration Series Shingles Installation Instructions
Duration™ Series Shingles Installation Instructions (PDF) In English and Spanish
The Preservation and Repair of Historic Clay Tile Roofs
Preservation Brief 30, by Anne E. Grimmer and Paul K. Williams Online Version: https://www.nps.gov/tps/how-to-preserve/briefs/30-clay-tile-roofs.htm PDF Version: https://www.nps.gov/tps/how-to-preserve/preservedocs/preservation-briefs/30Preserve-Brief-ClayRoofs.pdf
The Repair, Replacement and Maintenance of Historic Slate Roofs
Preservation Brief 29, by Jeffrey S. Levine Online Version: The Repair, Replacement and Maintenance of Historic Slate Roofs PDF Version: https://www.nps.gov/tps/how-to-preserve/preservedocs/preservation-briefs/29Preserve-Brief-SlateRoofs.pdf