San Francisco Theological Seminary of Northern California was originally constructed in 1891. Repairs to the slate roof were required.
Slate Color(s)
North Country Unfading Black
Quarry Region
Quebec, Canada
Slate Size(s)
20″ L x 10″ x W x 3/16″ thick
Courtesy of
North Country Slate
Quarrier/Distributor
Glendyne Inc.
National Slate Association’s Mobile Field Guide
mobile.slateassociation.org is available free of charge via an internet browser on your smart-phone* or tablet when an internet connection is available.Or you may also scan the QR code here with your QR reader.
Click here to download the Mobile Field Guide press release.
*The NSA Mobile Field Guide is best viewed on iPhones, iPads and the newer Android phones. Windows® smart phones are not supported at this time. The mobile site is not intended or formatted for desktop computers or laptops.
Slate Roofs Design and Installation Manual
84 years after the original “Slate Roofs,” NSA is proud to offer this completely new guide to slate roofing.
All new NSA members receive one free copy of the award-winning manual. Join now.
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