Metal Roofing for Commercial Buildings: A Complete Guide (2024)

When it comes to commercial buildings, the roof is one of the most important components. It protects the building from the elements and plays a crucial role in maintaining the structural integrity of the building. That’s why it’s essential to choose the right roofing material for your commercial building.

In recent years, metal roofing has become a popular choice for commercial buildings because of its durability, longevity, and cost-effectiveness. In this guide, we’ll explore everything you need to know about metal roofing for commercial buildings.

Why Choose Metal Roofing for Your Commercial Building?

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Metal roofing has been used for centuries, and it’s still a popular choice for commercial buildings today. Here are some of the reasons why:

Durability and Longevity

Metal roofing is known for its durability and longevity. It can withstand extreme weather conditions, including heavy rain, snow, and high winds. Metal roofs are also resistant to fire, rot, and insect damage, making them a low-maintenance option for commercial buildings. With proper installation and maintenance, a metal roof can last for 50 years or more.

Cost-Effectiveness

While the initial cost of metal roofing may be higher than other roofing materials, it’s a cost-effective option in the long run. Metal roofs require minimal maintenance and repairs, saving you money on maintenance costs. They are also energy-efficient, reflecting heat and reducing cooling costs in the summer.

Versatility

Metal roofing comes in a variety of styles, colors, and finishes, making it a versatile option for commercial buildings. It can mimic the look of other roofing materials, such as shingles or tiles while providing the benefits of metal roofing.

Metal Roofing Installation for Commercial Buildings

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Installing a metal roof on a commercial building requires careful planning and execution. Here are the steps involved in the installation process:

Step 1: Choose the Right Contractor

The first step in installing a metal roof on your commercial building is to choose the right roofing contractor. Look for a contractor with experience in installing metal roofs on commercial buildings and check their references and reviews. A reputable contractor will provide you with a detailed estimate and timeline for the project.

Step 2: Prepare the Roof

Before installing the metal roof, the existing roof must be inspected and prepared. Any damaged or rotting areas should be repaired, and the roof should be cleaned and cleared of debris. The roof should also be properly ventilated to prevent moisture buildup.

Step 3: Install the Underlayment

The underlayment is a layer of material that is placed between the roof deck and the metal panels. It provides an extra layer of protection against water and helps to regulate temperature. The type of underlayment used will depend on the climate and building codes in your area.

Step 4: Install the Metal Panels

The metal panels are then installed on top of the underlayment. The panels are secured to the roof deck using screws or clips, depending on the type of metal roofing system being used. The panels should be installed in a way that allows for proper drainage and prevents water from pooling on the roof.

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Step 5: Finish the Edges and Flashing

The edges and flashing of the roof are then finished to ensure a watertight seal. This includes installing metal trim around the edges of the roof and flashing around any openings, such as chimneys or vents.

Step 6: Conduct a Final Inspection

Once the installation is complete, a final inspection should be conducted to ensure that the roof is properly installed and meets all building codes and regulations.

Maintaining Your Metal Roof

Proper maintenance is essential for ensuring the longevity of your metal roof. Here are some tips for maintaining your metal roof:

Regular Inspections

Regular inspections should be conducted to check for any damage or wear and tear on the roof. Inspections should be done at least twice a year and after any severe weather events.

Keep the Roof Clean

Debris, such as leaves and branches, should be regularly cleared from the roof to prevent water from pooling and causing damage. Moss and algae should also be removed to prevent them from eating away at the metal.

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Address Repairs Promptly

If any damage is found during an inspection, it’s essential to address it promptly. Small repairs can quickly turn into more significant issues if left unattended.

Schedule Professional Maintenance

It’s recommended to schedule professional maintenance for your metal roof every 3-5 years. A professional roofing contractor can identify any potential issues and make necessary repairs to keep your roof in top condition.

Choosing the Right Metal Roofing Contractor

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Choosing the right contractor is crucial for the success of your metal roofing project. Here are some tips for finding the right contractor:

Experience and Expertise

Look for a contractor with experience and expertise in installing metal roofs on commercial buildings. They should be able to provide you with references and examples of their previous work.

Proper Licensing and Insurance

Make sure the contractor you choose is properly licensed and insured. This will protect you in case of any accidents or damages during the installation process.

Detailed Estimates and Timelines

A reputable contractor will provide you with a detailed estimate and timeline for the project. This will help you plan and budget accordingly.

Good Communication

Communication is key when working with a contractor. Make sure they are responsive and keep you updated on the progress of the project.

Conclusion

Metal roofing is an excellent option for commercial buildings due to its durability, longevity, and cost-effectiveness. With proper installation and maintenance, a metal roof can protect your building for decades. By choosing the right contractor and following proper maintenance practices, you can ensure the success of your metal roofing project.

Metal Roofing for Commercial Buildings: A Complete Guide (2024)

FAQs

How to determine how much metal roofing you need? ›

Measure your roof's length by gauging from one edge to the other. Additionally, obtain the length of a single metal panel from your roofing contractor. Calculate panel count by dividing roof length by panel length (e.g., 30-foot roof / 1-foot panel = 30 panels).

What are the two biggest concerns to a metal roof? ›

Despite their many advantages, metal roofs have some potential drawbacks.
  • Affordability. Metal roofs can be as much as two or three times more expensive than other roofing materials. ...
  • Noisiness. ...
  • Expansion, contraction and fasteners. ...
  • Inconsistency of color match. ...
  • Performance.

How many screws per sheet of metal roofing? ›

General guidelines suggest using 20-30 screws per sheet for corrugated metal roofing or 12-16 screws per sheet for standing seam metal roofing. But hey, don't get carried away.

How do I calculate how many roofing sheets I need? ›

Divide your total roof area (including overhangs and slopes) by the coverage area of a single metal roof sheet. This figure is the number of sheets needed for your project. Always round up to the nearest whole number to ensure you have enough sheets to cover the entire roof.

How do I figure out how much roofing material I need? ›

Calculate the roof area based on the measured dimensions and convert it to squares. Multiply the obtained squares by 3 to find the number of shingle bundles you need. Multiply the shingle bundles by 29 (the default size of the bundle) to find the number of shingles you need.

What is the best roof for a metal building? ›

Gable Designs

For a more traditional look that matches your home or business, consider a basic gable roof. This style features two evenly sized slopes that meet at a single ridge down the middle. Two flat ends provide opportunities for natural lighting and reinforce the strength of the metal building.

What type of metal roof lasts the longest? ›

The metal roof that lasts the longest is made of copper, with zinc a close second, followed by steel, aluminum, and corrugated metal.

What type of metal roofing is best for commercial? ›

Flat-Lock Metal Roofing

Flat-lock metal roofing is a versatile and durable option for commercial buildings. These panels feature flat interlocking seams, which create a smooth, uniform appearance on the roof. Flat-lock panels are typically made from copper or zinc but can be fabricated from steel or aluminum.

What thickness is commercial roofing? ›

While this may vary depending on the specific application, 24 to 22 gauge is generally the recommended range for most commercial roofs. Due to its thicker material, a 24-gauge metal roof is considered the most robust, most durable option for commercial applications.

How many layers does a commercial roof have? ›

How many layers does a commercial roof have? Commercial roofs are often multi-layer systems with up to five layers. These include the structural deck, insulation, vapor barrier, waterproof membrane, and, optionally, a protective top layer.

How close together should I put screws in metal roof? ›

What is the spacing for screws on metal roofing? Typically, screw spacing on metal roofing is around 12-24 inches apart.

Should metal roof screws go in flat or ridge? ›

Those who choose to install in the flat areas of the panel prefer this for a couple of reasons. They argue the screws placed on the rib don't create proper gasket compression due to the void under the rib. Installing on the ribs also has a higher risk of the screw pulling out during a high wind occurrence.

Do you pre-drill metal roofing? ›

Although you don't need to predrill holes for screws on exposed fastener panels, predrilling the panels themselves makes it easier to achieve straight screw lines. Luckily, you can predrill a stack of about 10 panels at a time. It's important to measure at this step to ensure you're drilling accurately.

How to figure linear feet for metal roofing? ›

(Length x Width = Square Feet). So a roof measuring 20 feet in length but 10 feet in width equals 200 square feet. From here, you can determine the width of the roofing material being used. You can divide the total square footage by the width of the material to get the linear feet required.

How do you estimate roof sheets? ›

Estimating Shingles

Measure the length and width of each portion of the roof, multiply length by width for each plane, and then add the planes together for the total square footage. If you have a simple gable roof, you'll only need to measure and sum up the 2 planes of the roof.

How many square feet does a sheet of metal roofing cover? ›

We learned from our experience shadowing an Erie Home metal roofing consultation that metal roofing materials come in premeasured sheets, typically about 50–100 square feet.

How much should I budget for a metal roof? ›

Metal roof costs typically range from $7,081 and $110,150, but many homeowners will pay around $11,000 on average depending on size, type, and where they live.

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