Here are some photographs of intentional mimicking of hail damage. Note the curved impressions in the asphalt, the pulverizing of the granules, the pushing of the granules into the asphalt, the lip at the edge of the mark, and the matching… Read More
Author Archives: Jerry Prugar
Is Hail Impact Damage to Shingles Immediately Noticeable? (Encore – Updated)
It is claimed by some that damage from hail impact may cause a gradual loss of granules that can result in premature aging of the shingles over time. They further say that without visible damage, there is no real way… Read More
What Can We Tell from This Photo? (Case Study 15)
The feature photograph was taken of the underside of a roof deck in an attic. This photograph provides helpful information regarding the cause and history of the damage. From this photo we observe the following: The pixelated pattern of the apparent… Read More
Indentations from Hail Impacts on Metal Roof Vents
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
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