Slate Roofs: Design and Installation Manual Archives

This slate roof was installed less than one year ago and already has more than a dozen leaks. One of the most basic problems is the side lap.

Columns, Details January 27, 2014

Correct Side Lap on a Slate Roof

I’ve been asked to examine slate roof installations all across the U.S., and one of the most disheartening things I’ve observed is how often incorrect…

Features, Special Report January 8, 2014

A Review of Slate Roofs: Design and Installation Manual

Over the years, I have read every slate and sheet-metal book I have been able to get my hands on. The National Slate Association’s Slate…

Features, Special Report January 8, 2014

The National Slate Association

Slate has long played a part in the architecture of the new world. It was first introduced to the U.S. as ballast for ships coming…