Despite all of their benefits there is one important disadvantage to choosing a metal roof and that is the initial cost of investment.
Negative aspects of metal roofs on homes.
As a softer metal hailstones will easily dent the copper.
By contrast a homeowner will likely replace an asphalt shingle roof two or even three or four times over a 50 year period.
Metal roofs can be as much as two or three times more expensive than other roofing materials.
According to state farm insurance statistics metal roofs routinely have a longevity of 40 to 70 years.
It is therefore very rare for a homeowner to install more than one metal roof over the time he or she lives in the home.
The negative aspect of aluminum in the alloy though is that galvalume doesn t self protect scratches or cut edges as well as galvanized steel does.
The same goes for your gutter which can accumulate debris.
For the most part metal roofing manufacturers have improved their products to address or solve many of these concerns.
Though metal roofing offers many pluses a few drawbacks are worthy of mention.
The many years of service that a metal roof promises come at a high cost.
Galvalume steel is also more susceptible to a process known as tension bend staining.
While they are not nearly as costly as wood shakes high end tile or slate metal roofs do have a higher up front cost compared to most asphalt shingles.
Talk to your contractor if you want to mix metals on different roof areas or when metals are adjacent to areas including gutters fasteners trim and chimneys.
Metal roofs can be noisy especially during a heavy rain or hailstorm.
Also be careful when mixing metal some metals react when introduced to other metals.
The biggest drawback is initial cost.
The softer nature of copper roofing also means that in hail prone regions it may be easily damaged.
In addition to leaving you cold thermal bridging can create black staining on the cold portions of the walls.
While the life of a metal roof is much longer investing in a metal roof only makes sense if you plan to stay in your home long enough to enjoy the cost benefits.
Metal roofs are expensive.
However a metal roof does offer a longer lifespan.
Disadvantages of metal roofing.