The Pros and Cons of a Metal Roof's Mettle
In the past, there used to be a name for a building on a residential property that was topped by a metal roof: shed. Or shack. Or mobile home.
But is a metal roof right for your current (or next) home? Here is a closer look at the advantages and drawbacks of metal roofing:
Metal Roof Pros
The most attractive feature of a metal roof is its durability. Unlike shingle or composite roofing materials, properly-installed metal roofs are generally expected to last as long as the houses they protect. In fact, most metal roof warranties are for time periods of between twenty and fifty years.
Furthermore, the metal roofing material is constructed to better withstand a host of potential dangers. Obviously, it is resistant to fire; but its lack of porousness also enables a metal roof to shed moisture. This capability makes it impervious to rotting, mildew growth, and insect infestation – unlike shingle or wooden roofs. In addition, metal roofing won’t blow away in high winds like shingles or wood shakes might do.
Metal Roof Cons
Perhaps the biggest disadvantage of a metal roof is its upfront cost. Homeowners will generally pay between $5 and $15 per square foot for a metal roof, as compared to $2.50 to $4.50 per square foot for a standard asphalt shingle roof. Therefore, it will take many more years for the homeowner to recoup his or her investment.
Metal roofing may also be more prone to certain types of damage. Since metal expands and contracts, these roofs are equipped with fasteners to account for this movement; unfortunately, these fasteners can come loose as the result of expansion or contraction. And while most metal roofs aren’t very susceptible to scratches or chips, they can be dented by large hail, errant baseballs/golf balls, or other objects. (Steel roofs are more impervious to these hazards than are copper or aluminum.)
Finally, great care should be exercised when walking on a metal roof in order to prevent permanent damage. In fact, walking on these roofs is generally discouraged because of the increased potential for denting. And if a metal panel has to be replaced due to damage, the cost will be significantly higher than that associated with repairing a shingle roof section of similar size.
One thing’s for sure: metal roofs are no longer restricted to homes of subpar quality or a lower price point. It’s possible that one day there may be just as many homes with metal roofing as there are with shingles on top of them!
Written by Del Thebaud