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About Todd E. Miller
Expertise
I am available to answer any questions pertaining to residential (or other sloped) metal roofing. I have knowledge of most available products but I like to approach projects from a "needs" basis and analyze them individually. Additionally, I can answer most questions about building ventilation.

Experience
I have worked for a manufacturer of residential metal roofing since 1980. I currently serve as President and have been involved with a wide variety of projects of all types across the world.

Organizations
I am a board member for Metal Construction Association, Metal Roofing Alliance, the local United Way, our church, and our son's school.

Publications
Over the years, I have had articles appear in several trade journals including RSI, Remodeling, and Qualified Remodeler.

Education/Credentials
I have a B.A. in Communications and have also completed three years of training with the E-Myth Academy.

 
   

You are here:  Experts > Home/Garden > Home Improvement/Repair > Roofing > transition flashing from asphalt roof to PVC corrugated panel roof

Roofing - transition flashing from asphalt roof to PVC corrugated panel roof


Expert: Todd E. Miller - 6/3/2009

Question
Thanks ahead of time.  I rebuilt a patio cover on the side of a garage and there is minimal overlap from the garage asphalt shingles to the PVC wavy panels although the transition is fairly smooth from the bottom of the building paper to the tops of the PVC panels.  I am looking for the best way to keep wind driven rain from blowing up underneath the paper and leaking onto the patio. Been considering a metal coated flashing tape/membrane material but thought I would ask a pro as well.  Thanks for you help.  Bryan

Answer
This is a tough situation.

First of all, the transition flashing should be significant. It should go up under the higher roof by 8 - 10" and out on top of the lower roof by 6 - 8".

I assume the corrugated is the lower roof??? Underneath the flashing that covers it there should either be foam closures contoured to meet the corrugations of the metal or there should be a metal closure hand-cut and fitted to do the job.

That foam or metal closure should then be sealed to the roof with a quality sealant.

I hope this helps.

All Best,

Todd Miller

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