Traditional Metal Roofing

Traditional Metal Roofing

The purpose of traditional is to increase the tensile strength of a material. The first traditional metal roofing materials used was galvanized iron. The traditional metal roofing process increased the bending strength of the galvanized iron in one direction, perpendicular to the grooves. When used on a roof CGI sheets overlap by at least a couple corrugations to insure waterproofing. Later other materials were galvanized for roofing, and strengthened in the same way.

Traditonal Metal Black Metal Roof on this Colonial Style Home

Origins of Traditional Metal Roofing

The idea for making CGI came to an engineer for the London Dock Company named Henry Palmer during the 1820s. Originally wrought iron was used for CGI, and due to its lightweight, corrosive-resistant nature, it quickly became a popular material for construction in the rural, poorer areas of the U.S., India, New Zealand, Chili and Australia. Additionally, for some of these countries the material went on to become popular in cities as well. Near the end of the 19th century, mild steel replaced wrought iron yet the initials CGI were still used.

Advantages of Traditional Metal Roofing

Traditional metal roofs were, and still are, popular for many reasons. Mainly their lightweight combined with their portability made them a convenient roofing material. Today these roofs are continuing in popularity due to their durability; traditional metal roofs will last 2 to 3 times the length of less expensive asphalt shingled roofs. Large building or buildings that may experience large snow accumulation particularly benefit from a lightweight yet strong metal roof. Additionally metal roofs shed snow more easily than other types of roofs. Traditional metal roofs will resist the harmful effects of nature better than roofs made from other materials. Practically imperious to fire and hail these roofs will harmlessly dissipate the electric charge of a lightning strike and stand up to high winds better than asphalt shingles. Their ability to withstand the ravages of nature make any building beneath them less expensive to insure. When combined with a high reflectivity coating, these roofs can cut air conditions cost by reflecting instead of absorbing heat from the sun. Favorably affecting the thermal efficiency of buildings is not the only way traditional metal roofing can save money. They are labor efficient because they require less man-hours to install; once installed there is little to no maintenance. Furthermore, there is less wasted material; the roofing material comes in sheets which can be ordered individually. Likewise the trim and ridge material can be ordered in this manner so leftover material is minimal. These sheets can even be ordered to specific lengths making less on the job modifications necessary. Additionally, the metal can be recycled saving material and energy as well as reducing waste sent to landfills. These roofs also afford a flexibility that other roofing materials cannot. A traditional metal roof can be installed over an existing roof, a solid substrata or even an open frame.

Maintenance of Traditional Metal Roofing

The amount of maintenance required of a traditional metal roof is dependent on its quality/utilization. An inexpensive outbuilding, containing only “AG” or a “Utility” grade material, may need repainting with a roof coating. The original factory painting with an acrylic or polyester coating can allow corrosion and fading. New polymer coatings, like Kynar, are becoming common. A polymer coating is superior to older coatings in longevity, lasts a lifetime without experiencing fading or corrosion. It is important to note that panel fasteners exposed to the elements may require occasional re-caulking or re-tightening to avoid leaking.

When seen as an investment rather than an expense the cost of a traditional metal roof is easy to justify. The same attributes that made it popular over a century ago are still present, and new features make it an even more attractive choice for today’s consumer.

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What our customers say

CUSTOMER TESTIMONIALS

Hear what our verified customers have to say about their experience with Armor Metal Roofing.

In my experience it is rare when people do what they say they are going to do. Glenn spent time explaining our options and recommending one. He made promises and kept every one. His crew was professional and the job was done when he said it would be. My son had a metal roof installed by another company and said they left nails all over his property. I have four young grandchildren who roam ours and so I was sensitive to this. Before handing him the final check I did a grid search for nails and metal. Nothing. And considering how much came off the roof and made its way into the dumpster that's amazing! I highly recommend Armor Metal Roofing fore their integrity and the quality of their work.

Greg Lull Avatar Greg Lull
March 27, 2023