Slate Roof Specification

Slate Roof Specification

The following slate roofing guide specification follows the MasterSpec format and is intended to be included with other sections for related work. This document references pages in Slate Roofs: Design and Installation Manual, 2010 Edition, and Technical Bulletins

The purpose of this 3-part specification is to provide a detailed description of the quality required, materials, workmanship, dimensions, etc. of work to be done so designers, architects, engineers, or roof consultants can specify a slate roof properly. It provides clear instructions on the intent, performance and construction of the project. In this document you will find key information related to:

Slate – Quality, shape, and color

Nails – Length, material, thickness

Underlayments –   Installation & product acceptability

Tools – Rippers, hammers, cutters

Installation – Layout, field slates, eaves, valleys, ridge, hip

Removal – Replacing, repair techniques

References and Standards – NSA, ASTM, FM, and the Florida Building Code

Example of Completed Slate Specification Sheet

We hope this sheet can be put to good use and ease this process for the roof designer. It would be beneficial to future users of this specification sheet if current designers have any feedback in working with it. Please send all thoughts to and they will be reviewed. Your help is greatly appreciated.

Slate roof designers
Slate roof specification
QR code

National Slate Association’s Mobile Field Guide 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.


Subscribe to our Newsletter


Business Address

National Slate Association. 65 East Main Street, Falconer, NY 14733

Working Hours

Monday – Friday, 8:30 AM – 4:30 PM
Saturday – Sunday: Closed