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About Tom Petrilli
Expertise
I can answer questions about residential and light commercial roofing. I really enjoy solving complicated problems. My expertise is in shingle, slate and traditional metals (copper, lead, terne, stainless) as well as single ply low slope roofing. I have also installed a considerable amount of synthetic slate.

Experience
I have been a roofer for 21 years, I've owned my own company for the past 13.

Organizations
The National Roofing Contractors Assoc and Virginia Association of Roofing Contractors

Education/Credentials
I have attended numerous manufacturer training programs as well as sought out experts in specialized work for instruction.

Awards and Honors
A+ rating from the Better Business Bureau, A rating from Angies List, highest mark for quality and value from the Washington Consumer Checkbook

You are here: Experts > Home/Garden > Home Improvement/Repair > Roofing > Roof Shingle step flashing

Roofing - Roof Shingle step flashing

Expert: Tom Petrilli - 11/3/2009

Question
I have inspected a three tab shingle roof installed on my in-laws new Northwest Wisconsin home. There is no 'step flashing' or 'baby tins' installed, at any roof wall intersections. Please let me know your thoughts.

Thank you.

Answer
Fred,
Where a shingle roof meets a wall or other vertical area there should be step flashing sequentially installed with each shingle course.
Step flashing works by ejecting water with every overlapped course.

In some very rare instances a continuos piece of metal can be used; but this should only be done for distances under two linear feet.

Hope it helps,

Tom

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