Category Archives: Shingles

Inadequate Roof Flashing

Posted by in Buying/Maintaining a Home, Construction & Shortcuts, Roof, Shingles, Water Sources | April 27, 2015

We are often contacted to evaluate the source of moisture or water that is causing apparent mold growth, decay, moisture staining, or another type of water damage.  Sometimes the cause of the moisture or water source is a little easier… Read More

Fire Damage to Shingles

Posted by in Fire Damage, Shingles | March 16, 2015

On occasion we are called in to a situation where a building or home owner is concerned that the shingles on his/her roof were damaged by the heat from a nearby fire.  Damage from exposure to excessive heat to shingles… Read More

What Can We Tell from This Photo? (Case Study 5)

Posted by in Roof, Shingles, Simple Forensic Methods | December 08, 2014

  This is an exercise to develop the abilities of observation. What can one know from examining this photograph? The cohesive failure of the asphalt in the mat, especially at the right end, indicates that the force required to lift… Read More

Power Washing Shingles?

Posted by in Buying/Maintaining a Home, Mold Growth, Roof, Shingles | June 07, 2014

Looking to high pressure wash (power wash) all that dirt, discoloration, mold growth, lichens, etc. off your shingles?  Have you seen advertisements in various local papers regarding high pressure washing shingles?  Here are a few observations. We have the experience… Read More

List of Shingle Damages that Cause Suspicion of Intentional Shingle Damage

Posted by in Roof, Shingles | November 18, 2013

It takes a body of evidence to determine whether or not the shingles have been intentionally damaged to mimic wind damage.  Following are many of the characteristics or features that alone might mean nothing, but many of them together are… Read More

Compare: An Adhesive Failure Vs. a Cohesive Failure in an Asphalt Shingle

Posted by in Shingles, Wind Damage | September 16, 2013

The wind resistance of asphalt shingles is strongly correlated to the sealing of the tabs.  That is, if the tabs are well sealed, the shingle have excellent resistance to damage from exposure to high winds.  An exception to this is… Read More

Tips for Identifying Intentional (Advertent) Damage to Asphalt Shingles – The Pattern of Compatibility – Part 5

Posted by in Roof, Shingles | May 13, 2013

We have been discussing three fundamental patterns that may be used to distinguish intentional manual damage  from naturally occurring hail or wind damage.  These fundamental patterns are: Natural Order vs. Unnatural (Artificial) Order Sufficiency vs. Insufficiency Compatibility vs. Incompatibility  In… Read More

Tips for Identifying Intentional (Advertent) Damage to Asphalt Shingles – The Pattern of Sufficiency – Part 4

Posted by in Roof, Shingles | May 06, 2013

We have been discussing three fundamental patterns that may be used to distinguish intentional manual damage  from naturally occurring hail or wind damage.  These fundamental patterns are: Natural Order vs. Unnatural (Artificial) Order Sufficiency vs. Insufficiency Compatibility vs. Incompatibility In… Read More