Standing seam is a descriptive industry term for vertical sheet metal panels featuring the characteristic raised seams that form a watertight lock. The seams are typically raised above the level of the metal roofing panels, which gives the roof a distinctive appearance.
The seams are usually between 1 and 2 inches high and are either snap-locked or mechanically seamed together to create a watertight seal. Standing seam roofing can be made from a variety of metals, including coated steel, aluminum, zinc, and copper.
Standing seam is of the most popular metal roofing styles for homes, thanks to its durability, longevity, simplicity, versatility, energy efficiency, and its clean, bold looks.
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If you like the modern style of raised seams and clean vertical lines on a metal roof, then consider installing this system on your home. A standing seam metal roof will not only compliment your home, but it will also give it that contemporary and modern look and feel, providing unmatched durability, longevity, and energy efficiency. 😉
Data: According to the Insurance Institute for Business & Home Safety (IBHS), metal roofing can withstand wind speeds up to 160 mph, making it suitable for areas facing Category 5 hurricanes.
In hurricane-prone regions or areas with severe wind events like tornadoes, standing seam metal roofs can be designed to handle extreme wind speeds, often surpassing 160 mph. Some advanced metal roofing systems are even rated to withstand winds of 180 mph or more, offering top-tier protection.
Standing Seam Metal Roof in a Nutshell
Standing seam is a high-end upgrade and an undisputed step up in quality and longevity from the classic corrugated and ribbed style metal roofs. Unlike its predecessor, corrugated steel roofing, which is still being widely used today for many commercial, industrial, and even some residential projects, standing seam has an improved design featuring concealed fasteners.
The ingenious design of standing seam featuring its characteristic raised seams, with no exposed fasteners, helps minimize a chance of a roof leak down the road.
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Two Types of Standing Seam:
Field-locked (mechanically locked) standing seam requires special crimping tools to crimp down/lock the seams during the installation. The golden standard. Field locked system is considered more durable than its snap-locked counterpart.
Snap-lock standing seam system is a bit pricier (due to higher cost of materials but requires less labor), but the seams can be locked by a simple snapping of the panels together.
Regardless of the type of system you choose to install, you will want to use manufacturer approved fasteners and installation methods.
Installation Cost
The average cost to install a new architectural standing seam metal roof on a house can range between $11.50 to $20.50 per square foot or $1,150 to $2,050 per square, depending on the roof size and shape, project difficulty location. — This price range includes any required building permits, materials and supplies, professional labor, and workmanship warranty from the installer.
For a typical 2,000 square foot residential roof, it will cost between $23,000 and $41,000 to install standing seam. The total project cost can be higher, if there is also a separate detached garage to re-roof.
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Cost of Materials
If you order less than 500 sq. ft. or 5 squares of custom-fabricated standing seam panels at your local metal fabrication shop, then your costs for the materials and trim will be around $5.50 to $7.50 per sq. ft. or $550 to $750 for smaller-sized orders.
Thus, it will cost between $2,750 and $3,500 for five squares of made-to-order standing seam panels and trim – enough to roof over that medium-sized front porch over a patio on your house.
For larger-sized orders, such as 1,000 square feet or 10 squares and greater, you can expect to pay about $5.50 per sq. ft. for custom-fabricated standing seam panels. For larger-sized orders, metal panels can cost less than $4.50 per square foot including trim.
There’s also the cost of matching metal flashing, such as starter and drip-edge flashing, metal coil for chimney and skylight flashing, snow guards for doorways and entrances, underlayment, and suitable screws.
All in all, unless you have your own roll-forming machine, you will need to go through a custom metal fabrication shop such as the ones at Beacon Supply or ABC supply. These places sell sheet metal panels and roofing materials to contractors only, so you will need to work with a professional contractor to buy the materials from a roofing supplier on your behalf.
Your average material costs will be around $5.00 per sq. ft. for a medium sized order of custom fabricated standing seam metal panels. For larger-sized orders, standing seam panels and trim can cost about $4.50 per square, depending on the color, metal thickness, etc.
For even larger orders, architectural standing seam panels in 26-gauge or 24 gauge G-90 galvanized steel finished with Kynar 500 paint finish can be ordered for between $3.50 and $4.50 per square foot including trim.
It’s true that you can also buy prefabricated standing seam metal panels at Lowe’s or Home Depot for about $2.00-$2.50 per sq. ft., but those panels could be limited to standard lengths, basic colors in polyester paint finish (not Kynar 500) and will normally be made out of the low-end, thinner (29-gauge) G-60 galvanized steel that is not suitable for residential applications.
For high-end residential metal roof installations, you should aim for at least gauge 26 steel, or better yet 24- or 22-gauge (the smaller the gauge number the better — the smaller the number, the thicker the panel) Galvalume steel or aluminum panels finished with Kynar 500 paint.
All else being equal, Galvalume (zinc-aluminum coated steel) is considered a more premium and hence preferred option vs. G-90 galvanized steel (zinc coating only).
In most cases, Galvalume steel will outperform G-90 (galvanized) steel, all else being equal.
Note: Never buy low-cost metal panels finished with acrylic or polyester only paint finish for residential applications. — Unlike, Kynar 500 paint finish, acrylic and/or polyester paints will peel and fade.
Warrantied Professional Installation Costs
On average, standing seam will cost anywhere from $6.50 to $12.50 to install (professional labor and workmanship warranty, not including the cost of materials), depending on the overall size and difficulty of the roof and your home’s location.
Impressive Selection of Standard and Custom Colors
You can get a wide selection of standing seam profiles available in G-90 galvanized steel, Galvalume steel, and aluminum — all these metals are available in a wide array of standard and custom colors at major roofing supply warehouses such as Beacon Supply and ABC supply where they also have sheet metal fabricator shops.
Major roofing suppliers, such as ABC Supply, Beacon Supply, and Harvey Industries, normally have a wide selection of standard colors when it comes to sheet metal coils they have in stock — available for the fabrication of metal panels in any profile you choose.
However, if they don’t have the specific color you want from the catalog, they can get you a custom or premium color metal coil from the manufacturer, as long as you are willing to pay extra for the premium color, and don’t mind waiting a few weeks for the right color metal coil to arrive.
Pro Tip: The key to a long-lasting metal roof is the quality of its installation, therefore make sure the installers you choose really know how to install standing seam and have plenty of past jobs to demonstrate their experience and expertise. — It may be helpful to speak to their former customers to make sure they are happy with the product and service.
Standing Seam is Loved by Residential and Commercial Building Architects
Many architects are especially fond of specifying standing seam for new construction projects, as well as for retrofitting existing roofs, thanks to the beauty, durability, longevity, and relative softness coupled with strength and flexibility of metal.
Standing seam roofs can also help improve the overall energy efficiency of a house, as well as help prevent ice dams during the winter months.
Commonly Used Metals and Alloys
Standing seam panels can be manufactured from a coated G-90 galvanized steel, Galvalume Steel (better quality than G-90 steel), bare and painted aluminum, zinc, copper, tin or terne, titanium, and stainless steel.
If you live near a coastal area, it is a good idea to opt for either aluminum or zinc standing seam roof to prevent premature corrosion and rusting that can arise from the relatively high concentration of salt spray in the coastal and marine environments.
Galvalume steel finished with Kynar 500 or Hylar 5000 paint finish is another durable and long-lasting option to explore for a home exposed to salt spray environment, such as beach homes.
Standing Seam vs. Corrugated Metal
Standing seam roofs are generally made from thicker grades of steel than corrugated steel roofs. While many corrugated steel roofs are made using the thinner 29-gauge steel, a minimum of 26-gauge G-90 galvanized steel or Galvalume steel (better) is used for manufacturing of standing seam metal panels.
A 24- and 22-gauge steel (thicker and stronger/better grade than 26-gauge steel) can also be used for high-end residential and commercial applications including architectural (requiring a roof deck) and structural (requiring a suitable roof frame only) profiles.
Did you know? A mid-panel stiffening technique is sometimes employed by sheet metal fabricators, suppliers and manufacturers for a 16-inch and wider standing seam panels in order to prevent “oil canning” of the panels.
A metal coil from which standing seam panels are manufactured is usually factory painted with a high-end Kynar 500 paint finish. — this is unlike its close cousins corrugated and ribbed metal roofs (featuring exposed fasteners) that are often painted with cheaper, polyester or acrylic paints.
How Standing Seam Compare to Metal Shingles?
Standing seam metal roofs can sometimes cost 20% to 30% more to install than metal shingles on more complex roofs. This is largely attributed to a more tedious labor necessary to install standing seam panels on a more complex roof with multiple dormers and valleys.
In terms of performance, there is no significant difference between the two systems, however the quality of your installation and strict adherence to your system’s manufacturer’s specifications is by far the single most important factor determining longevity and performance of any residential or commercial, high-end metal roof.
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Advantages and Drawback to Keep in Mind
Pros:
- Durability and Longevity: Standing seam is known for its durability and longevity, making it a great investment for homeowners and building owners.
- Energy Efficiency: Standing seam roofing can help reduce cooling costs during hot summer months because it reflects the sun’s heat rather than absorbing it. Look for Kynar 500 pain finishes with CRRC rated colors.
- Environmental Benefits: Standing seam roofing is often made from recycled materials and can be recycled at the end of its life. Additionally, some types of standing seam roofing, such as copper, are naturally antimicrobial, which can help prevent the growth of mold and mildew.
- Aesthetics: Standing seam roofing is available in a wide range of colors, which can be custom matched to complement the color scheme of any building.
- Insurance Discounts: Standing seam roofing may qualify for insurance discounts in some areas because of its durability and resistance to weather damage.
- Solar Ready: The raised seams on standing seam metal roof are ideal for the installation of solar panels. No need to drill any holes in the roof.
Cons:
- Cost: Standing seam roofing can be significantly more expensive than other types of roofing materials, such as asphalt shingles.
- Oil Canning: The appearance of visible waves or ripples in the metal panels, known as oil canning, can be a cosmetic concern for some homeowners. However, oil canning typically occurs in longer panels that are wider than 16 inches. A mid-panel stiffening technique will help prevent oil canning.
- Expansion and Contraction: Metal roofing materials can expand and contract with changes in temperature. This is not a concern so long as manufacturer’s installation specs are followed.
- Fasteners and Seams: The fasteners and seams of a standing seam roof are critical components that must be installed correctly to ensure a secure and watertight roof.
- Roof Pitch and Shape: Standing seam can be more difficult and costlier to install on steep, non-walkable roofs with complex topology like multiple dormers and skylights.
- Some HOAs may be opposed to standing seam, requiring more traditional approaches such as fiberglass composition shingles, or metal shingles.
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FAQs
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- How long does standing seam roofing last? Standing seam roofing is known for its longevity and can last anywhere from 30 to 60 years, depending on the material used and how well it is maintained.
- Is standing seam roofing energy efficient? Yes, standing seam roofing can be energy efficient. The Kynar 500 finished panels are designed to reflect solar heat, which can help keep your home cooler in the summer months. Additionally, some standing seam roofing systems can be installed with insulation to further increase energy efficiency.
- Can standing seam roofing be installed over an existing roof? In some cases, standing seam roofing can be installed over an existing roof. This is known as a “retrofit” installation and can be a cost-effective way to upgrade your roof without having to tear off the existing material. However, it’s important to consult with a roofing professional to determine if your existing roof is suitable for a retrofit installation.
- Is standing seam roofing more expensive than other types of roofing? Standing seam roofing is generally two to three times more expensive than traditional asphalt shingle roofing, but it can also last much longer and provide better energy efficiency. The cost of standing seam roofing will vary depending on the material used and the size and complexity of the roof.
- What are the environmental benefits of standing seam roofing? Standing seam roofing is a sustainable option for several reasons. First, it can be made from recycled materials, such as scrap metal from other construction projects. Second, it can be recycled at the end of its useful life, reducing the amount of waste that ends up in landfills. Finally, standing seam roofing can be designed to reflect solar radiant heat, reducing the energy needed to cool your home and lowering your carbon footprint.
- Standing seam roofing is a popular choice for commercial and industrial buildings, but it can also be a great option for residential properties. The clean lines and modern look of standing seam roofing can add a sleek and contemporary touch to any home.
- When choosing a material for your standing seam roof, it’s important to consider factors like durability, maintenance requirements, and cost. Coated (G-90 galvanized and Galvalume) steel is a popular choice (followed by aluminum) because it’s affordable, strong, and low-maintenance, while zinc and copper are more expensive options that can add a unique and elegant look to your home.
- The installation process for standing seam roofing can be complex and should be done by a professional roofing contractor. Improper installation can lead to leaks and other issues down the line, so it’s important to choose a contractor with experience and expertise in installing standing seam roofs.
- Standing seam roofing can also be outfitted with snow guards and solar panels, which can further enhance the functionality and sustainability of your roof.
Overall, standing seam roofing is a versatile and durable option that can provide long-lasting protection and energy efficiency for your home or business.
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Are you saying that if you are closer to salt spray it is recommended to use the mill finish steel instead of Kynar 500 painted sheets?
Please advise.
Hi Estella,
If your house is located in close proximity to salt spray environment such as a beach house, then your best bet is to go with an aluminum roof that is coated with Kynar 500 or equivalent-quality paint finish. The next best thing would be Galvalume Steel finished with Kynar 500 paint. Zinc and lead-coated copper roofing would also work great, but copper is notoriously pricey.
Make sure to avoid the use of acrylic paint finishes near the salt spray environment. Metal panels coated with low quality paint finishes won’t last very long near the ocean.
I noticed that a lot of sites covering standing seam roofs seem to dance around the question of rust over time. There is generally no information about the possibility of rusting, and the “lifetime” term of standing seam roofs. Where can the information be found as to the best manufactured standing seam panels in general, along with overview of brands/manufacturers offering panels that are least liable/susceptible to rust and corrosion?
If you live near the ocean, within a quarter mile from the shore, I would recommend that you go with aluminum standing seam panels designed for architectural applications. Aluminum roofing panels, whether painted or mill-finished, are not susceptible to corrosion, period. It does not matter whether you go with Petersen Aluminum (Pac-Clad), Atas International, or another manufacturer or supplier of the coil. Panels can be fabricated at your local building supply such as Beacon Supply or ABC Supply, Harvey’s Building Industries might have ’em to.
The key to understand is that all manufacturers, whether they offer painter aluminum panels, or galvalume steel, license their paint-coating technology under the trademark of Kynar 500, and all of the Kynar-coated panels will have the same 30-year limited warranty.
If you go with aluminum and your roof happens to have a rather large span (longer than 20 feet on each side of the ridge), then I suggest you go with the thickest possible metal panels, whether aluminum, galvalume steel, copper or zinc. The panels can also be fabricated on site.
If you live far enough from the ocean and salt-spray is not an issue, then galvalume steel standing seam with Kynar 500 or equivalent/better paint finish will do the trick. The key is to avoid acrylic paint finishes which are often combined with the thin-gauge steel panels, such as 29-gauge corrugated and ribbed metal panels. These are low quality metal roofing products that should be avoided as they are subject to rust. 26 or 24 (better) gauge steel panels with Kynar paint finish are appropriate for most residential applications, as long as your home is not in the immediate vicinity of salt-spray environment.
Other than that, the quality of installation, and making sure your deck is properly prepared before the installation of standing seam panels.
I would go as far as recommending a complete removal of old asphalt shingles before installing standing seam metal panels, as sand granules on the old asphalt roof can scratch and expose steel during the thermal-expansion and contraction cycles, which can cause steel panels to rub against the old asphalt shingles and its sand granules. Yes, both steel and aluminum can expand and contract ever so slightly with different temperatures. Removing old that old asphalt roof will help prevent the scratching and rusting of steel panels due to rubbing over asphalt from underneath.
Hope this clears things up.