NSA MOBILE FIELD GUIDE
Can be accessed through your smart phone or tablet* web browser (not your desktop/laptop computer) Iin order to experience the NSA Mobile Field Guide as intended.
SLATE ROOFING CONTRACTORS ASSOCIATION
General Installation Guidelines for Natural Quarried Roofing Slate
These installation guidelines have been developed and produced for the general public by professional slate roofing contractor members of the Slate Roofing Contractors Association of North America, Inc., a non-profit trade association. These installation guidelines, if followed, are designed to produce a long-lasting weather-tight slate roof for most basic applications.