IMHO there are so many people putting metal roofing on houses that metal roofing DOES NOT belong on from a design perspective.
A log cabin, sure!
A broad cape cod with a full length front porch, sure!
An Ultra contemporary, sure!
But the average suburban tract house... yeah, that's not attractive at all!
There are some HORRIBLE colors out there!
I have seen colored metal roofing on houses that would have been beautiful attractive homes if it were not for the horrible choice of roofing.
For all the people that LOVE them, there is an equal number of people that find them horribly unattractive.
I am one of those people. If you want a great roof that lasts a really long time, check out the new composite material roofing options. From recycled rubber, to concrete, to solar - there are so many attractive roof options that are available and with a solar roof, the roof will literally pay for itself.
PLEASE consider the style of your home while considering the roofing options.
Take a look around your community - look at the attractive buildings that have stood the test of time. Look at churches built with loving hands of brick or stone. Look at public buildings built to stand the test of time. Look at historic homes that are beautiful and have a signature style.
Now look around your community at the metal buildings that have been constructed in the last 20 years. Pop up churches that look like factories - industrial buildings that are rusting through after only 10 years or so.
The desire for aesthetic appeal is lost in our society today. And buildings aren't built to last.
As I said, metal roofing belongs on some buildings/homes - and it doesn't belong on others.
Some Victorian homes were built with metal/tin roofing - BUT it most likely wasn't bright red, blue, green, or a putrid shade of tan.
The look and exterior appeal of your home is what makes people even want to look at your home when it is on the market - so consider what the other homes in your neighborhood look like, their level of repair, and exterior appeal - and then decide if you should even consider a metal roof!
Cost isn't the only factor to consider! Make sure it is a right material choice for your home's overall design and architecture!