Replacing a roof is a significant investment that ensures the safety and longevity of your property. If you're a property owner in Detroit, understanding the permit requirements for roof replacement is crucial to ensure compliance with local regulations and avoid potential legal issues. Here's a comprehensive guide to help you navigate the permitting process for roof replacement in Detroit.

Understanding Detroit's General Roofing Permit Requirements
In Detroit, the necessity of obtaining a permit for roof replacement largely depends on the scope of the work:

• Re-shingling or Re-roofing: Generally, replacing existing shingles without altering the roof's structure does not require a permit. This applies when you're simply removing old shingles and installing new ones without making structural changes.
• Structural Modifications: If your roofing project involves structural changes—such as altering the roof's framework, changing the pitch, or adding dormers—a building permit is typically required. These modifications can affect the building's structural integrity and, therefore, must comply with local building codes.
• New Roof Installation: Constructing a new roof as part of a new building or a major renovation project usually necessitates obtaining a building permit to ensure adherence to safety and building standards.

Importance of Compliance
Obtaining the necessary permits for roof replacement is not just a bureaucratic step; it serves several critical purposes:

• Safety Assurance: Permits ensure that the roofing work complies with building codes, which are designed to guarantee the safety and structural integrity of the building.
• Legal Protection: Failure to obtain required permits can result in fines, legal complications, or issues when selling the property. Unpermitted work might also lead to challenges with insurance claims.
• Quality Assurance: Permitted projects are typically subject to inspections, which help verify that the work meets established standards and is performed correctly.

Steps to Obtain a Roofing Permit in Detroit

1. Consult Local Building Department: Before starting your roofing project, contact your local building department to understand specific requirements and obtain the necessary application forms.
2. Prepare Necessary Documentation: This may include detailed plans of the proposed work, contractor information, and proof of insurance.
3. Submit Application and Pay Fees: Complete the application process as directed by the local authority, which may involve paying a permit fee.
4. Schedule Inspections: Once the permit is issued, you may be required to schedule inspections at various stages of the project to ensure compliance with building codes.

Navigating the permit requirements for roof replacement in Detroit involves understanding both state guidelines and local regulations. While minor re-roofing projects may not require a permit, any work involving structural changes typically does. Always consult with your local building department before commencing work to ensure compliance and avoid potential legal issues.

At Motor City Roofers, we are committed to providing our clients with expert guidance and quality roofing services. If you're planning a roof replacement and need assistance navigating the permitting process, don't hesitate to reach out to us. Our experienced team is here to help ensure your project is completed safely, legally, and efficiently.

Your roof is one of the most critical components of your building, protecting everything beneath it from the harsh elements. Whether you own a home, retail space, office complex, or industrial building in Detroit, knowing how long your roof will last--and what factors influence its lifespan--is essential for budgeting, planning maintenance, and protecting your property investment.

At  Motor City Roofers,  we’ve worked with all kinds of roofing systems across the Detroit metro area. From scorching summers to freezing winters, our climate puts every roof to the test. In this guide, we’ll explore how long different types of roofing systems typically last, what affects their durability, signs your roof might need replacement, and how to extend its life with proper care.

Average Lifespan by Roof Type
The first step in understanding roof longevity is knowing the typical lifespan of the material used. Here’s a breakdown of the most common roofing types found on Detroit-area residential and commercial properties:

1. Asphalt Shingles (15–30 Years)
Asphalt shingles are widely used in residential properties due to their affordability and ease of installation. Standard 3-tab shingles typically last around 15–20 years, while architectural (laminate) shingles can stretch to  25–30 years  with proper maintenance.

2. Metal Roofing (40–70 Years)
Metal roofs are increasingly popular for both homes and commercial buildings. They’re durable, fire-resistant, and energy-efficient. Depending on the type of metal (steel, aluminum, or copper), and installation quality, a metal roof can last anywhere from 40 to 70 years.

3. EPDM Roofing (20–30 Years)
EPDM, also known as rubber roofing, is a common choice for flat or low-slope commercial roofs. It’s flexible and holds up well against UV rays. Expect a well-installed EPDM roof to last 20–30 years.

4. TPO Roofing (15–25 Years)
TPO (thermoplastic polyolefin) roofing systems are common on modern commercial buildings. They’re heat-welded, reflective, and resistant to chemicals. A TPO roof typically lasts  15–25 years  depending on exposure and maintenance.

5. PVC Roofing (20–30 Years)
PVC roofs are similar to TPO but often used in environments with high chemical exposure (like restaurants or factories). They’re very durable and can last  20–30 years  when properly installed and maintained.

6. Modified Bitumen/BUR (15–25 Years)
Built-up roofing (BUR) and modified bitumen systems, often referred to as hot tar roofs, are layered and durable but prone to wear over time. These roofs generally last  15–25 years  in Detroit’s climate.

7. Slate and Clay Tile (50–100+ Years)
While rare in Detroit due to their weight and cost, slate and clay tile roofs are extremely long-lasting--some can last over a century with proper maintenance.

Factors That Affect Roof Lifespan
While materials give a general expectation, many other variables determine how long a roof will actually last:
1. Detroit’s Weather
Extreme temperature swings, freeze-thaw cycles, snow accumulation, hail, and heavy rain all contribute to roof degradation. Roofs in Detroit face more challenges than those in milder climates.

2. Installation Quality
Even the best materials can fail if installed incorrectly. A roof installed by experienced professionals--like our team at Motor City Roofers--will last significantly longer and perform better over time.

3. Ventilation and Insulation
Proper attic ventilation and insulation prevent heat and moisture buildup, which can cause shingles to deteriorate or lead to condensation issues under flat roofs.

4. Maintenance and RepairsRoutine inspections, cleaning gutters, removing debris, sealing flashing, and addressing small leaks can prevent larger issues and significantly extend the life of your roof.

5. Roof Slope and DrainageFlat roofs are more prone to ponding water and leaks than sloped roofs. Ensuring proper drainage systems--like scuppers, downspouts, and interior drains--can reduce stress and water damage.

Signs Your Roof May Need ReplacementUnderstanding your roof’s age is helpful, but visual clues are just as important. Look for these warning signs:
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• Curled, cracked, or missing shingles
• Blistering or bubbling on flat membranes
• Excessive granule loss on asphalt shingles
• Ponding water or sagging areas
• Flashing or sealant deterioration around penetrations
• Interior water stains or mold growth
• Increased energy bills due to poor insulation or ventilation

If you notice one or more of these signs--especially on an older roof--it may be time to consult a professional for an inspection.

Extending the Life of Your RoofWant to get the most from your roofing investment? Here are some tips to maximize your roof’s lifespan:

✔ Schedule Annual InspectionsWe recommend having your roof inspected at least once per year and after major storms. This helps identify and fix issues early before they turn into expensive problems.
✔ Clear Debris RegularlyLeaves, branches, and snow can clog drains and cause damage. Keep your roof and gutter systems clean.
✔ Repair Small Issues PromptlyFixing a minor leak or replacing damaged flashing now can prevent major repairs--or full replacements--later.
✔ Apply Reflective CoatingsFlat and low-slope commercial roofs benefit from roof coatings that improve UV resistance and reduce thermal expansion.
✔ Work with ProfessionalsChoose a licensed, experienced contractor who understands local building codes and weather patterns. Motor City Roofers has served Detroit for years with trusted service and top-tier craftsmanship.

When to Replace vs. Repair
If your roof is approaching the end of its expected life or has sustained significant damage, replacing it may be more cost-effective than repeated repairs. Our team offers free inspections to help you make an informed decision based on the condition of your existing system, your budget, and your building’s needs.

Final Thoughts: Know Your Roof’s Lifespan and Plan Ahead
Knowing how long your roof is likely to last allows you to budget accordingly, avoid emergency repairs, and protect your property investment. Whether you manage a single-family home, an apartment complex, or a commercial facility in Detroit, roof longevity depends on the material, installation quality, maintenance practices, and the unpredictable Michigan weather.

At Motor City Roofers, we’re committed to helping Detroit property owners get the most from their roofs. From inspections and repairs to complete replacements, we offer solutions tailored to your needs and built to withstand the Motor City’s toughest seasons.

Contact Motor City Roofers today 
for a free roof evaluation or to learn more about maintaining and extending the life of your commercial or residential roof in Detroit. We're here to keep your roof--and your investment--strong for years to come.

​Proper drainage is essential for the longevity and performance of any commercial roof system, especially in cities like Detroit where weather conditions can vary dramatically. Standing water, also known as “ponding,” is one of the leading causes of premature roof failure. That’s where roof scuppers come in--a simple yet effective drainage solution designed to help protect your building from water-related damage.
At  Motor City Roofers,  we install and maintain commercial roofing systems across the Detroit metro area, and one of the most common questions we hear from building owners and facility managers is: What exactly are scuppers, and do I need them for my roof?
This comprehensive guide will explain what scuppers are, how they work, why they matter, and how they compare to other drainage systems.

What Are Scuppers?
A roof scupper is an opening or outlet installed on the edge of a roof or parapet wall that allows water to drain off the rooftop. These openings are typically connected to downspouts, gutters, or through-wall drainage systems that direct water safely away from the building.
Scuppers are especially useful on flat or low-slope commercial roofs, where water doesn’t naturally run off like it does on pitched roofs. Without proper drainage, rainwater, snowmelt, and ice can accumulate, leading to leaks, structural damage, or even collapse in severe cases.

Types of Roof Scuppers
There are several types of scuppers, each designed for specific drainage needs and architectural styles:
1. Through-Wall Scuppers
These scuppers pass through the parapet wall and discharge water directly onto a splash block or into a downspout. They are often paired with leader heads and downspouts to carry water to the ground.

2. Spout-Type Scuppers
These are basic open holes or metal spouts that allow water to flow freely off the roof edge. They're typically used where water can be discharged onto a lower roof or ground area without risk.

3. Box Scuppers
Box scuppers are rectangular or square in shape and designed to handle larger volumes of water. They are commonly integrated into the roof’s edge and are often fitted with screens to prevent debris buildup.

4. Overflow Scuppers
These act as a secondary drainage system in case the primary drains become clogged. Installed slightly higher than the main scuppers, overflow scuppers prevent roof flooding and are a requirement under many building codes.

How Do Scuppers Work?
Scuppers rely on gravity and water’s natural flow tendencies to move moisture off the roof. During rainfall, water flows toward the lowest point of the roof, often aided by slope or tapered insulation. The water then drains through the scuppers and into a designated path--such as a downspout, drainage pipe, or storm sewer system.

In Detroit, where snow and ice can clog traditional drainage systems, scuppers provide an added level of protection by preventing ice dams and alleviating excess snowmelt.

Why Scuppers Matter for Commercial Roofing
Scuppers serve several vital functions in maintaining a healthy roof system:
✅ Prevent Water AccumulationBy allowing water to exit the roof, scuppers help avoid ponding, which can lead to membrane deterioration, leaks, and structural stress.
✅ Extend Roof LifeEfficient drainage means less wear and tear on the roof membrane, seams, and insulation--leading to a longer service life.
✅ Protect Building IntegrityWater buildup on the roof can eventually infiltrate walls, ceilings, and foundations. Scuppers keep water moving away from vulnerable building components.
✅ Meet Building Code RequirementsIn many municipalities, including Detroit, commercial buildings are required to have effective roof drainage systems. Scuppers are often part of code-compliant designs.
✅ Cost-Effective and Low-MaintenanceCompared to internal drains that may require complex plumbing, scuppers are simple, durable, and easy to maintain.

Scuppers vs. Other Drainage Systems
Let’s look at how scuppers compare to other roof drainage methods commonly used in commercial roofing.

🔹 Scuppers vs. Internal Drains
Internal drains are located in the center of the roof and connect to underground pipes. While they’re hidden and effective, they are prone to clogging and can be expensive to install and repair.
Scuppers, by contrast, are installed on the roof perimeter and are visible for easy inspection. They’re less likely to clog and easier to maintain, making them ideal for smaller commercial buildings or buildings with parapet walls.

🔹 Scuppers vs. Gutters
Gutters run along the roof edge and collect water, directing it through downspouts. While gutters are useful, they can clog easily in areas with heavy debris or ice.
Scuppers are more durable and often handle larger volumes of water more efficiently. In many flat roof designs, scuppers are used in conjunction with gutters to provide a complete drainage solution.

Best Practices for Scupper Installation and Maintenance
As Detroit’s commercial roofing experts, we recommend the following when it comes to scuppers:
✔ Proper PlacementScuppers should be installed at low points in the roof where water naturally collects. They must be sized appropriately for the square footage of the roof and anticipated rainfall volume.
✔ Use Overflow ScuppersAlways include overflow scuppers slightly above the main line. This provides a failsafe in the event of clogs or heavy downpours.
✔ Install Splash Guards or Leader HeadsDirect water away from the building with splash blocks or conductor heads that prevent damage to the building’s foundation or exterior walls.
✔ Regular MaintenanceInspect scuppers seasonally, especially in the fall and winter. Clear debris, check for rust or damage, and ensure water flows freely.

Scuppers and Detroit Weather
Detroit’s weather--marked by heavy snow, spring rains, and freeze-thaw cycles--demands a resilient drainage system. Scuppers offer a practical solution for managing variable water volumes. They’re particularly helpful in older buildings where retrofitting internal drains isn’t feasible or cost-effective.

At Motor City Roofers, we design and install commercial roof drainage systems specifically suited to Michigan’s climate. Whether you need new scuppers, repairs, or a full drainage evaluation, we provide tailored solutions that ensure your roof stands up to Detroit’s toughest conditions.

Final Thoughts
​Scuppers may be a simple component of a commercial roofing system, but they play a powerful role in preserving the health and function of your building. Easy to install, cost-effective, and highly efficient, scuppers remain one of the best drainage solutions for flat and low-slope commercial roofs.
If you’re experiencing drainage issues or want to ensure your commercial roof meets code and performs properly in all weather,  Motor City Roofers  is here to help. We bring decades of experience to every project and understand the unique challenges Detroit’s climate presents.

Contact Motor City Roofers today to schedule a roof inspection or drainage consultation. Let us help you protect your commercial investment--one scupper at a time.