Ask Todd Miller *Metal Roofing Expert

Roofing Questions Answered

Gutters Torn Off By Snow

Filed under: Metal Roofing,Roofing Answers

A nice homeowner named Lisa emailed me the following about her recent issues with the gutters on her home being torn off by sliding snow. I came across an old posting of yours in which you were giving advice to a homeowner like me who had a metal roof and problems with cascading snow ripping […]


Can Metal Roofs Be Installed Direct Over Old Shingles?

Filed under: Roofing Answers

I received the following question from a homeowner in Oklahoma: Is it OK for metal roofing to be screwed down directly on top of asphalt shingles, without any wood or other material between the metal and shingle? Here was my response: You may wish to take a look at the videos in our Metal Roofing […]


Recent Question About Roof Deck Insulation

Filed under: Metal Roofing,Roofing Answers

I received the following question recently from a homeowner named Tom. He is obviously doing his homework to ensure a successful roofing project. I like that! Todd, I saw your info on metal roofs over shingles and have a few questions. I have a double wide low pitch roof that has some saging between the […]


Metal Roofing and Leaving Your Home to the Next Generation

Filed under: Metal Roofing,Roofing Answers

I am frequently asked the following questions: “Is a metal roof right for me?” and “Is a metal roof right for my home?” Those questions then lead to an interesting exchange in which I ask about the home and also about the homeowner’s needs. One question I always ask is “How long do you plan […]


Exposed Fastener Metal Roofing: Is It Standing Seam?

Filed under: A Little History,Metal Roofing,Roofing Answers

I get a lot of questions about exposed fastener metal roofing. Also called “screw-through” metal roofing or sometimes “channel drain”, these are rollformed products that are vertically oriented on the roof. They have some sort of corrugated wave or rib pattern formed into the panels. Some common names to the corrugated patterns are “R Panel,” […]


Is Increased Attic Ventilation Ever Not A Good Idea?

Filed under: Misc,Roofing Answers

A few years ago, some folks had me come to their home to try to evaluate an odd issue they were having after their new roof was installed. They were suddenly getting condensation on the inside of their home’s exterior walls. This condensation was worst behind couches and other items that were located up against […]


Battens or no Battens?

Filed under: Misc,Roofing Answers

Greg from Florida recently sent me this question: I am looking to have a metal roof installed over my existing single layer shingle roof. I have had several estimates from companies but the one difference I see is that some companies want to use purlins and others do not. Are there a advantages / disadvantages […]


How To Determine If You Need A New Roof

Filed under: Misc,Roofing Answers

I frequently get asked by homeowners for suggestions on how they can determine if this is the year when they need to re-roof their home. That’s a good question and I suspect that, with the tough winter that much of the country has had including lots of ice dams and snow and rain troubles, many […]


Ventless Gas Stoves and Condensation

Filed under: Misc,Roofing Answers

Beverly recently wrote me the following: I saw your e mail address on a net page about metal roof problems. So i’m hoping you can give me a little help. My story, My parents have lived in the same house for 37 years. It has a tin roof with nothing under it . They changed […]


Ridge Ventilation and 2nd Floor Conversions

Filed under: Misc,Roofing Answers

A homeowner from Tennessee wrote and asked me: I have ridge vents for a metal roof that I had installed this past year. To prevent wasps and leaves from coming in, the roofer told me he’d put metal screens in the vent. However, a man he sent over put in a black foam that he […]


About Me

My expertise comes from 30 years of experience in metal roofing manufacturing. As president of Isaiah Industries, based in Piqua Ohio, I run several of the world’s leading manufacturers of residential metal roofing; Classic Metal Roofing Systems, Kassel & Irons, and Green American Home. My personal goal is to educate homeowners of the long-life benefits of metal roofing.

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