Haag Panel & Membrane Gauge™
The Haag Panel & Membrane Gauge™ estimates the thickness of steel and aluminum panels and single-ply membranes.
Metal Roofs Damage Assessment Field Guide
Our newest publication is a must-have guide featuring metal roofing. Learn how to differentiate functional damage from issues related to manufacture, installation, and weathering. Scroll below for info and a sneak-peek video.
Crane Accidents: Causes & Trends
A comprehensive analysis of over 500 crane accident causes and trends, 1983-2013, by Jim Wiethorn, P.E. **See link below to purchase**
1/12 Shingle Gauge™ (3-Tab Only)
The 1/12 Shingle Gauge™ estimates the warranty levels of 3-Tab fiberglass asphalt shingles installed after Jan. 2011. Scroll below for more info, including a sneak-peek video and a how-to-use demo video.
4/09 Shingle Gauge™
The 4/09 Shingle Gauge™ measures the thickness of an asphalt composition shingle, and based on analyses made by Haag, correlates that thickness to a warranty level.
Composition Roofs Damage Assessment Field Guide
Our most popular book, this guide illustrates types of damage found on composition roofs -- a great on-the-roof reference guide!