There are a number of causes of spots of granule loss on shingles. In this article we look at a manufacturing defect. Note the relatively uniform spacing of the spots of granule loss in Figure 1. Note also the consistency… Read More
Category Archives: Shingles
What Can We Tell from This Photo? (Case Study 16)
The feature photograph was taken of applique shingles. Applique shingles provide a dimensional appearance by adding a second coating of asphalt and granules, called an applique, over some areas to give the shingle a thicker appearance. This photograph provides helpful information… Read More
These Are DEFINITELY Intentional
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
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 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
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
Intentional Damage? Or Something Else?
Not all shingle tabs that are creased or unsealed by hand lifting are done so with intention to damage. During the replacement or repair of shingles, flashings, or other roof component, shingle tabs are often lifted and bent back to… Read More