Roofing/Expert Profile

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All types of questions with regard to roofing, waterproofing and sheet metal. This includes commercial and residential buildings, along with the various aspects of the construction means and methods, ventilation, steep-slope or low-slope, code requirements, installation errors and other such problems

Experience in the area

I started in roofing fabricating and installing sheet metal flashings out of high school for a large commercial contractor. I worked for the same contractor in the office estimating and project managing commercial project for 10 years. I left the construction side of roofing and now work as a roof consultant, which I have been doing for 8-years.


RCI, Inc.


I am a Registered Roof Consultant (RRC) and a Registered Roof Observer (RRO) through RCI, Inc. RCI is a international group of building envelope professionals. I am an approved instructor for RCI educational programs.

Past/Present Clients

We have worked with many local school districts, insurance companies, HOA's, building management companies, and we have a national client with buildings located throughout the US.

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Recent Reviews from Users

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Michael08/18/16101010Gave great advise! Never knew I should .....
Dave01/16/15101010Thanks Aaron, I thought it less disruptive .....

Recent Answers from Aaron Nelson

2016-08-15 Roofing nail protruding from roof:

Michael,  The nail was most likely an underdriven nail that had worked its way through the overlying shingle. I'd recommend that you remove the silicone sealant and utilize some modified mastic which can

2016-06-20 Barrier films in Roofing:

Julia,  This is an interesting question. Obviously if this type of film is used in roofing it would have to be UV stable. Additionally it would need to be highly puncture resistant. There would need to

2016-06-08 Attic Ventilation and insulation with attached covered Porch - Mold Issue:

Scott,  By your description it generally sounds like a ventilation issue. Addition the insulation to the porch will likely not impact anything. Adding ventilation is LIKELY the correct answer. Ventilation

2016-02-29 Connection for help:

Steve,  The theory should be fine but with regard to the actual structural attachments I'd refer you to a structural engineer to verify that the attachment can take the additional structural elements.

2015-11-01 metal roofing:

Jim,  The short answer is no. The type of roofing product does not prevent ice damming. A properly installed roof may prevent moisture intrusion from the effects of an ice dam but the roofing does not


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