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All aspects of residential Roofing. This includes shingles and flat (low slope) roofs. I have knowledge in the installation as well as the design of roofs from an engineering standpoint.
I have been doing roofing for 40 years. This was my father's business and I took it over in 1980.
I have written responses to artcles that I felt needed a response to and those responses have been published in roofing trade magazines.
BSEE Drexel University