If you’re a homeowner in Michigan (or anywhere in North America), chances are you’ve heard the term “asphalt roof” thrown around a lot. But what exactly is an asphalt roof and why is it the most common roofing type in the U.S.?
At Weather Vane Roofing, asphalt roofing is one of the most popular systems we install, repair, and inspect. It offers the right mix of affordability, durability, and aesthetic versatility especially in a climate like Michigan’s, where roofs must endure snow, sun, wind, and heavy rain.
In this article, we’ll break down what an asphalt roof is, what it’s made of, the different types, and whether it’s the right option for your home.
What Is an Asphalt Roof?
An asphalt roof refers to a roofing system made primarily of asphalt shingles: a composite material designed to shed water and protect your home from the elements.
Asphalt shingles are layered with:
- Fiberglass mat or organic base for strength
- Asphalt coating to provide waterproofing
- Mineral granules for UV protection and durability
These shingles are laid in overlapping rows to create a water-shedding surface, often paired with underlayment, flashing, and proper ventilation to form a complete roofing system.
Types of Asphalt Shingles
Not all asphalt shingles are the same. Michigan homeowners typically choose between these three types:
1. 3-Tab Shingles
- Flat appearance with uniform shape
- Lightweight and affordable
- Shorter lifespan (~15–20 years)
- More susceptible to wind damage
2. Architectural (Dimensional) Shingles
- Thicker and layered for a dimensional look
- More durable and longer-lasting (~25–30+ years)
- Better wind and weather resistance
- Commonly installed in modern Michigan homes
3. Luxury (Designer) Shingles
- Mimic slate or wood shakes
- Heavier and more durable
- Higher cost, but great curb appeal
- Often used on high-end homes or historical properties
👉 Need help choosing the right shingle?
Contact Weather Vane Roofing for a free consultation.
Why Asphalt Roofs Are So Popular in Michigan
✅ Cost-Effective
Asphalt roofing is one of the most affordable roofing options available, making it a practical choice for most Michigan homeowners.
✅ Weather-Resistant
Architectural shingles are designed to withstand snow, ice, hail, and wind, key for homes exposed to harsh Midwest seasons.
✅ Quick Installation
Compared to metal or tile, asphalt shingles are faster and easier to install, which reduces labor costs.
✅ Variety of Styles and Colors
You can find asphalt shingles in shades that match just about any home style: from modern craftsman to classic colonial.
What’s Under the Asphalt Shingles? (It Matters More Than You Think)
A high-quality asphalt roof isn’t just about the shingles, it’s about the entire system working together:
- Underlayment: A moisture barrier that lies beneath the shingles
- Ice and Water Shield: Protects vulnerable areas like eaves and valleys
- Flashing: Metal pieces that prevent water from seeping in around vents, chimneys, and skylights
- Ventilation: Ensures proper airflow to prevent moisture and heat buildup
Neglecting any of these components can compromise the whole system even if the shingles look fine on top.
👉 Learn what happens when the wrong material or method is used:
Common Low-Slope Roofing Mistakes
How Long Does an Asphalt Roof Last in Michigan?
It depends on the shingle type and installation quality:
| Shingle Type | Average Lifespan in MI |
| 3-Tab | 15–20 years |
| Architectural | 25–30+ years |
| Luxury | 30–50+ years |
Heavy snow, high humidity, tree debris, and poor ventilation can shorten that lifespan while routine maintenance and inspections can extend it.
Is an Asphalt Roof Waterproof?
Not exactly, asphalt shingles are water-shedding, not waterproof. They’re designed to direct water off your roof, but if water finds its way underneath (due to poor flashing, clogged gutters, or ice dams), leaks can occur.
When Should You Replace an Asphalt Roof?
You might need a new asphalt roof if you notice:
- Curling, cracked, or missing shingles
- Shingle granules in gutters
- Soft spots or sagging on the roof surface
- Daylight seeping in the attic
- Leaks after heavy rain or snowmelt
If you’re not sure, the safest move is to book a professional inspection.
👉 Schedule a free inspection with Weather Vane Roofing
Is Asphalt Roofing Right for You?
For most Michigan homes, the answer is yes. Asphalt roofing offers the best balance of cost, performance, and curb appeal and when installed and maintained properly, it will protect your home for decades.
If you’re thinking about replacing your roof or aren’t sure what condition your current one is in, we’re here to help you make the right call.
