131 S. 147th East Ave. Tulsa, Oklahoma 74116
free: 866-MPI-PNLS | phone: 918-641-0641 | fax: 918-641-0640
8341 Ruby Ave., Kansas City, KS 66111 | phone: 913-766-7200 | fax: 913-766-7201
Serving Northern Texas, Oklahoma, Kansas, Missouri, Arkansas, Southern Nebraska and Iowa

Why Metal Roofing?

Why Metal Roofing?

For years, metal roofing has provided attractive, strong, long-lasting and maintenance-free service to a wide range of structures. Within the last ten years, revolutionary changes have been taking place in metal roofing. New, high-tech factory finishes have dramatically extended the life and performance of roofing metal. Additionally, many new roofing products including new colors, metal shingles, tile, stone-coat and curved panels now make building or homeowner's choices nearly endless. Residential Metal Roofing
Metal is now the great "chameleon", blending into any neighborhood code with finishes that look like shake, composition shingle, ceramic tile, or Victorian shingle, but with one exceptional difference -- it is a superior roofing system designed to last for up to forty years. Let's look at the specifics of metal roofing products:

No Myths, Just Facts:

Fire Resistance

While this has always been true, the recent increase in wildfires has brought metal's natural fire resistance into the national spotlight. In most forest fires or wildfires, the heat creates its own swirling wind, and superheated embers are dropped down from these drafts and from the trees. In fact in wildfire situations, nearly 90% of the home fires begin on the roof. Metal Roof Fire Resistance
A metal roof becomes an important first line of defense against wildfires, for if the embers can't get started there, the house may escape tragedy. Proof? Many amazing stories have come to light in recent years. Oakland, California in 1991, one of the largest wildfires in the US wiped out 3,000 homes -- all, but one. Alone in the middle of a charred wilderness of foundations, a home stood nearly untouched -- a home with a metal roof. Washington state, August of 2012, two homes made national news (ABC World News Tonight) as a vast wildfire took everything in its path, except two homes -- both with metal roofs.
And closer to home, the Mannford/Drumright fires in Oklahoma burned numerous home. While homes all around were burned to the ground, one home in Mannford remained standing, with only minor repairs required. This was a home with a metal roof supplied by Metal Panels Inc. MPI's panels all carry UL approval, with a Class A fire rating and a Class IV rating for impact resistance. The property of fire resistance is not lost on the insurance companies, either. Many will offer significant discounts on homeowner insurance, up to 20% in Oklahoma. For more information on the fire resistance of metal roofs, see our article, "Trial by Fire" on this site or as published in Oklahoma Roofing Monthly. Mannford fire

News Report: Fire-resistant metal roofing

Wind Resistance

Wind Testing Properly installed metal roofing has an amazing ability to hold fast under high wind conditions as compared to traditional roofing materials. According to research by Metal Roofing Alliance, metal roofing can withstand wind gusts up to 140-mph. New developments recently announced in panel design and clips are pushing this rating even higher, making metal an ideal choice for the wind-prone storms in Florida and other coastal areas. According to architect Jim Mitchell (Mitchell Architecture, Colorado), "Metal roofing systems have wind resistance and uplift resistance that is above the new building code requirements."

 

MPI has our own testimonial for wind resistance. A nearby commercial storage company had replaced about 50% of their building roofs with MPI metal roofing. The remaining buildings were recently re-roofed with composition shingles. One afternoon, a microburst passed directly through their property. Extensive damage occurred to the composition roofs, requiring complete re-roofing and insurance claims to storage customers. The metal roofed buildings were completely unaffected by the storm and high winds. For more details on this storm, see our "Weather Storm" flyer in our library. For a great technical article on this subject, see Coastal Contractor's "Wind Performance of Metal Roofing" MPI panel wind resistance

 

Hail Resistance

Anyone who lives in Oklahoma has probably experienced hail damage to their car or their home. Hail can move in suddenly, and can range from light flakes to golf-ball or even baseball-size projectiles. If extreme hail accosts your home, damage will occur -- but let's look at the resulting damage on several roofing materials. Severe hail on composition shingles will knock off the stone coat, drive holes through the shingle tabs, and even cause tear-offs and water leaks through to the decking. In Oklahoma, adjusters generally assume that if your neighborhood was in a hail burst, you will have a roof claim. hail on roof

If your roof was covered in wood shake, the damage could be even worse. Tile roofing is generally considered a premium, lifetime roof, but that is not the case when it comes to hail. Like a baseball through a window, hail can rain down and break roofing tiles, resulting in a very expensive roof repair. Metal roofs may be the most durable of all against hail. Metal roof panels are available in a wide range of thicknesses, and the heavier the gauge, the tougher it is against hail. If you have a lightweight lawn tool shed, it probably will show noticeable "dings" after a significant hailstorm. But, if you have a heavier-gauge panel installed over solid decking on your home, even sizeable hail may not leave a mark. If your structure does suffers minor dents, a few seasons of hot sun may naturally reduce or work those dents out completely. Most importantly, a metal roof dented by a hail storm, still will not leak -- your home protection remains intact.

 

Finish

Calling a metal roof "painted" is like referring to armor plating as sheet metal. Today's metal panels are not painted. They receive an extensive multi-step finish process performed in a coil coating plant.

MPI coil coating process
It begins with metal coils entering a cleaning and etching process, followed by zinc or galvanic treatments. Next, a binder/primer is flow-coated onto the coil, and baked to proper hardness. Then a color coat of an advanced, highly durable finish such as silicone-modified polyester resin or fluoropolymer resin (PVDF) is flowed on and factory baked dry. Often, an additional UV-resistant clearcoat is applied to finish the process. This finish has an amazing durability and significant energy savings due to its high UV-resistance and reflectance of radiant energy. Unlike the panels of old, today's metal panels are designed to last up to 50 years with little or no maintenance. MPI Kynar paint layers

 

From our FAQ section:

Can you walk on a metal roof?

Most metal roofs can be walked on without damage. This will depend on the substrate, the slope and the panel design. Proper shoes and safety precautions must be used. For accurate information about your metal roof, consult your roofing contractor.

Does a metal roof attract lightning?

Quite the opposite, a metal roof is a dissipater, not a lightning rod. There is no more risk of your metal roof being struck by lightning than a roof of any other material. In fact, should your home actually be struck by lightning, a metal roof may be a safer alternative; a metal roof will quickly and safely disperse the electricity to ground better than other materials, and because it isn't combustible, the risk of a resulting house fire is very low.

Are metal roofs noisy?

We've all been in a large commercial building of some kind, and heard the noise of rain on the roof. Because these roofs are large spanses over open purlins (no solid roof backing), the roof acts as reverberating drum, and unless there is adequate insulation, these roofs can be noisy. This is definitely NOT the case in residential installations. Why? Residential metal roofs are installed over solid sheathing. Because the metal is installed over solid substrate, it makes no more noise than other roofing materials. In fact, since metal roofing may include additional radiant insulation products, its noise performance may be even better than other materials. Metal roofs with a heavy texture, such as stamped shingles or stone-coat, disperse direct impact and quiet percussive noise even more.

For more information on metal roofing, or receive answers to your own questions, see our FAQ Section.