What happens when a hail stone impacts a metal roof vent? If the hail is big enough, many times greater than /14 inch diameter is big enough, the metal gets dented. The feature photograph shows where hail stones indented a… Read More
Author Archives: Jerry Prugar
What Happened Here?
The shingles along the eave of roof exhibit broken and dislodged tabs and surface gouges (Figure 1). What could have caused this? Vigorous ice removal. The damage is along an area that was reportedly covered with ice (see featured photograph).… Read More
Happy 4th of July (2017)
Thoughts for the 4th of July: . “If the freedom of speech is taken away, then dumb and silent we may be led, like sheep to the slaughter.” George Washington . “They that can give up essential liberty to obtain… Read More
Corrugated Brick Ties
How well do those corrugated brick ties perform over time? Not too well. The wall fallen in the featured photograph exhibited severely corroded ties that contributed to the failure of the brick veneer (Figures 1 and 2). The wall was… Read More
Quickly Identifying Unsealed Shingle Tabs
Here is a quick and easy method to identify unsealed, partially unsealed, or poorly bonded shingle tabs or shingle strips. But I must warn you, “DO NOT TRY THIS AT HOME UNLESS YOU ARE WILLING TO ACCEPT THE RISK OF… Read More
Happy Flag Day (June 14 2017)
What does the flag of the United States of America mean to you? Is it just a colorful piece of fabric, an outdated signaling device, a decoration for your hat or shirt, a symbol of repression or freedom, or something… Read More
What Can We Tell from This Photo? (Case Study 14)
The feature photograph was taken of a chimney that had been clad with manufactured stone veneer. This photograph provides helpful information regarding the cause and history of the damage. From this photo we observe the following: There is no waterproof membrane… Read More