Last month we discussed some of the types of metal roofing shingles. This time, we turn our attention to more of them.
One of the types of metal roofing shingles we focus on this month is galvalume steel shingles. This is a type of metal roofing shingles that coats base carbon/iron steel with an aluminum and zinc alloy.
Galvalume steel shingles have increased attributes of aluminum shingles, both positive and negative. On the positive side, this type of metal roofing shingles is very corrosion-resistant and provides a strong barrier protection compared to galvanized steel shingles. Unfortunately, this type of metal roofing shingles also has a magnified drawback in that they don’t self-protect against scratches or cut edges as well as galvanized steel shingles.
Galvanized Steel. This is the type of metal roofing shingles used more often than any other. It costs less, is strong, and holds paint well. Most scratches are prevented from forming rust with this type of metal roofing shingles due to the zinc present in its metal coating. The more zinc, the longer the life span of this kind of metal roofing shingles.
A significant drawback to galvanized steel shingles is their tendency to show rust more quickly in coastal areas. These areas tend to have exposure to salt spray and other elements that shorten the life span of this type of metal roofing shingles.
Zinc Roofing Shingles. This type of metal roofing shingles can last up to 100 years and use its patina to cover scratches. It is favored for commercial projects because it can be easily formed into a great variety of shapes.
One drawback of this kind of metal roofing shingles is its tendency to ‘chalk’ over time. This can be cleaned and controlled somewhat.
The processing energy cost for this type of metal roofing shingles is considerably less than that of copper or steel. It is also 100% recyclable and easily available.
Zinc is expensive. It can be compared to copper regarding cost.
Tin Roofing Shingles. This type of metal roofing shingles is rare. Thus, it isn’t used as much for roofing shingles. Used as a canning material, when it was replaced by aluminum for this purpose, its use as shingles also went by the wayside. Today, when the term is used, people most often are talking about steel or aluminum shingles.
When you need a new roof or if you need information about the best kind of metal roofing shingles to buy, contact Price My Roof at 978-361-6129. They’ve been in business for 15 years doing home improvements in the New Hampshire, Eastern Massachusetts, and Boston areas.