In today’s struggling, albeit rebounding economy, design-build clients 
have become increasingly more vigilant and aware of construction methods that will be more durable and more likely to improve the delivery time of a repair job and completion of a new project. Metal construction systems certainly have become more commonplace and there’s good reason since they meet a wide range of criteria. And, with ongoing improvements in aesthetics and architectural design, the future continues to be bright f or this building system.
Metal roofing is certainly an option that is getting increasing attention in this market, as clients focus on delivering a building that meets construction deadlines, requires little maintenance, has a long life-cycle and is as aesthetically pleasing as more traditional roofing systems such as tile and asphalt shingles.
One of the major advantages of a metal roofing system is its durability. The bottom line is that a metal roof should last as long as the actual structure, and in most cases the typical warranty is for 20 to 30 years. Traditional roofing can have up to a 15-year limited warranty. Obviously, these features clearly pose a significant attraction for design-build clients offering a new building or owners seeking an attractive re-roofing option.
In addition, metal roofs hold up very well in heavy rains and strong winds. Most systems are certified to stand up to hurricane force winds of up to 146 mph. For the most part, maintenance for metal roofs involves periodic pressure cleaning and the application of anti-corrosive agents.
Speed of installation provides another advantage over tile, shingle, asphalt and fiberglass systems. Let’s start with the weight. Tile roofing weighs an average of 750 pounds per square
(100 square feet) and concrete is at roughly 900 pounds per square. A metal roof weighs in anywhere from 50 to 150 pounds per square. Obviously, this weight differential puts significantly less stress on the structure. But the most beneficial feature is that a metal roof can be installed much quicker and requires less manpower due to the decreased weight. And because metal roofs are delivered in sheets, there is much less labor required in the installation. This is a large departure from tile work, for example, which requires significant labor in terms of transporting individual tiles and then installing them-one by one-on the roof. Metal roofs are cut and configured at the factory and for the most part arrive on the job site ready to install. All of this results in fewer workers and faster installation. This computes into a faster, more efficient and cost-effective process.
From a re-roofing standpoint, these features result in a more rapid and less expensive repair, one that is exceptionally durable.
In addition to the speed and relative ease of installation, there are a variety of other advantages:
- Most metal roofs are fire resistant, and have a Class A rating.
- From a “green” standpoint, these roofs reflect radiant heat and there are studies supporting the fact that utility bills are lower, a factor that contributes to lower life-cycle operating costs. Also, as with all metal construction the supply of steel comes from recycled materials so there is little impact on the environment. Many buildings with metal roofs will get additional LEED points.
- Metal roofing systems can be installed over older roofs with the construction of new, built-up trusses.
- Metal roofs are resistant to rust and corrosion as a result of sophisticated anti-corrosion applications and treatment.
- They can be installed on gently pitched roofs with virtually no danger of leaking
- These systems are compatible with virtually every architectural design due to new design techniques. For example, there are metal components that look like Spanish clay tile. Another innovative approach involves applying ceramic granules to make the metal systems look like asphalt shingles. Metal roofs are also available in virtually every color.
- Unlike tile and asphalt shingle roofs, metal systems are not affected by extreme heat and cold. And in winter climates, coatings on metal roofs actually help snow slide off.
- Most quality metal roofing has Kynar-type coating which prevents fading. The sun won’t bake out the colors, resulting in long-term vibrant colors. This also prevents chalking.
As the economy rebounds and new construction increases, the likelihood of clients seeking the cost effective, durable, maintenance-free and aesthetically pleasing metal roofing systems will increase.
Lee Walker is president of Boca Raton, Fla.-based Walker Design & Construction, a general contracting firm specializing in pre-engineered steel construction. The company is the Florida franchise for Butler Manufacturing. Walker is also the South Florida general contractor for Building God’s Way, a national church-building delivery system that uses scriptural construction guidelines. For more information, visit www.walkerdesignco.com or call (561) 998-0001.
