When choosing a new roof for your home, durability and value are top priorities. Asphalt shingles have long been a popular choice among homeowners — and for good reason. They’re reliable, affordable, and designed to stand strong against the elements. But have you ever wondered what asphalt shingles are made of and why they last so long?

In this guide, we’ll take a closer look at the asphalt composition, explore the difference between fiberglass and organic shingles, and uncover the factors that give these roofs exceptional durability and UV protection. By the end, you’ll understand why JMS Exteriors LLC continues to recommend and install high-quality GAF asphalt shingles for homeowners who want both performance and peace of mind.

Understanding What Asphalt Shingles Are Made Of

To appreciate their strength and longevity, you first need to know what asphalt shingles are made of. Each shingle is an expertly engineered layer of materials designed to perform specific functions — from waterproofing to withstanding heat, wind, and heavy rain.

1. The Base Layer: Fiberglass or Organic Material

The base of every shingle determines its structure and flexibility. Traditionally, two main types of bases are used:

• Fiberglass shingles– These are the most common today. A mat of woven glass fibres provides a lightweight, fire-resistant foundation that helps maintain the shingle’s shape and strength. 
• Organic shingles– Made from felt paper or recycled cellulose materials saturated with asphalt. While heavier and less fire-resistant, these were once popular for their flexibility and strength before fiberglass became dominant.

Fiberglass shingles are now the industry standard for modern roofing, offering superior durabilityand UV resistance. JMS Exteriors proudly installs fiberglass-based GAF shingles, ensuring homeowners enjoy long-term performance with minimal maintenance.

For more details about high-quality roofing solutions, visitJMS Exteriors LLC— your trusted partner for premium asphalt roofing installations.

2. Asphalt: The Heart of Every Shingle

The next layer — and perhaps the most crucial — is the asphalt compositionitself. Asphalt serves as the waterproofing agent, binding all the materials together while keeping moisture out.

High-grade asphalt, derived from refined petroleum, is heated and applied to the shingle mat to create a watertight seal. It prevents leaks, resists cracking, and helps the roof shed water efficiently. When you ask, “What are asphalt shingles made of?”, asphalt is undeniably the star of the show.

Beyond waterproofing, asphalt also contributes to the roof’s durabilityand ability to withstand harsh weather conditions — from pounding rain to scorching sunlight.

3. Mineral Granules: The Finishing Touch

Once the asphalt coating is applied, mineral granules are embedded onto the surface. These tiny ceramic-coated stones give shingles their distinctive colour and texture, but they also play a much bigger role.

Granules provide UV protection, shielding the asphalt beneath from sunlight and preventing premature aging. They also enhance fire resistance and add aesthetic appeal, allowing homeowners to choose from a range of hues that complement their home’s exterior.

JMS Exteriors only uses shingles with high-quality, colour-stable granules to maintain visual appeal and performance for decades.

4. Sealant Strips and Adhesive Layers

A final but essential component in the shingle’s structure is the sealant strip. During installation, heat from the sun activates these adhesive layers, bonding shingles together to create a tight, wind-resistant seal. This design reduces the risk of shingles lifting or blowing off during storms — a key reason they last so long.

When properly installed by experiencedshingle roofers, these layers work in perfect harmony to form a secure, weatherproof barrier over your home.

Fiberglass vs. Organic Shingles: Which Is Better?

While both materials serve as the foundation for asphalt shingles, they differ in performance and lifespan.

Fiberglass shingles clearly outperform organic versions in nearly every category. That’s why modern manufacturers like GAF focus exclusively on fiberglass mats. JMS Exteriors installs only the best, ensuring homeowners receive shingles that balance beauty with resilience.

Why Asphalt Shingles Last So Long

The longevity of asphalt shingles isn’t by accident — it’s a result of careful design and material science. Let’s explore the factors that give them such impressive staying power.

1. Weather Resistance

The multi-layer construction of asphalt shingles makes them highly resistant to wind, rain, and snow. The asphalt coating acts as a flexible yet tough barrier that adapts to temperature changes without cracking.

2. UV and Heat Protection

The mineral granules that top each shingle reflect sunlight, protecting the asphalt layer beneath from UV degradation. This feature extends the shingle’s lifespan while helping maintain cooler roof temperatures.

3. Algae and Impact Resistance

Many premium shingles include special granule coatings to resist algae growth and discolouration. Some also incorporate impact-resistant technology to better handle hail or debris — features that homeowners appreciate in unpredictable weather conditions.

4. Installation Expertise

Even the most advanced shingles need expert installation to perform at their best. At JMS Exteriors, our skilled team follows precise manufacturer guidelines to ensure your roof’s longevity. Every project is handled with care, attention to detail, and a commitment to quality craftsmanship.

The Role of Proper Maintenance

Although asphalt shingles are designed for durability, simple maintenance steps can go a long way in preserving your roof’s health.

• Keep gutters clear:Prevents water backup that can damage shingles.
• Trim overhanging branches:Reduces debris buildup and physical impact.
• Inspect after severe storms:Look for signs of loose or missing shingles.
• Schedule regular professional inspections:Routine checks help detect minor issues before they become costly.

You can easilyschedule a free roof inspectionwith JMS Exteriors to assess the condition of your existing shingle roof and plan for a replacement if needed.

Remember, JMS performs roof inspections and new shingle installations only— ensuring every homeowner gets a fresh start with a durable, professionally installed roofing system

The Science Behind Asphalt Durability

Asphalt shingles combine chemistry and engineering for maximum lifespan. Their durability stems from a few key scientific principles:

• Thermal flexibility:Asphalt can expand and contract with temperature shifts, reducing cracking.
• Hydrophobic nature:Asphalt naturally repels water, preventing moisture infiltration.
• Granule bonding:The fusion between asphalt and granules adds protection and stability.
• Adhesion technology:Sealant strips create a tight seal that withstands wind uplift.

This advanced design enables shingles to last 25 to 50 years, depending on environmental conditions and maintenance.

Why JMS Exteriors Recommends GAF Shingles

JMS Exteriors LLC proudly installs GAF shingles because they represent the best combination of technology, performance, and visual appeal in the industry. These shingles are engineered to last, tested for extreme weather conditions, and backed by robust manufacturer warranties.

Key benefits of GAF shingles include:

• Advanced UV-resistant granules for superior colour retention
• StainGuard® protection against algae growth
• Wind resistance up to 130 mph (in select lines)
• Industry-leading lifetime limited warranties

By partnering with GAF, JMS Exteriors ensures every homeowner receives a long-lasting, weatherproof roofing system that adds value and curb appeal.

Environmental Impact: Are Asphalt Shingles Eco-Friendly?

While asphalt is a petroleum-based product, today’s shingle manufacturing process is far more efficient and environmentally responsible than in the past. Many manufacturers now incorporate recycled materials into production, reducing waste and energy consumption. Additionally, modern shingles can be recycled at the end of their lifespan to create new roofing materials or asphalt pavement.

This balance of performance and sustainability makes asphalt shingles a smart choice for eco-conscious homeowners who want durability without compromising environmental responsibility.

Signs It’s Time to Replace Your Asphalt Shingles

Even though asphalt shingles are built to last, time and weather eventually take their toll. Here are signs it might be time to replace your roof:

• Curling or cracked shingles
• Granules collecting in gutters
• Bald patches or missing shingles
• Leaks or water stains on ceilings
• Shingles older than 20 years

If you notice any of these warning signs, JMS Exteriors can help you determine whether a full roof replacement is needed. Schedule a quick, hassle-free inspection today.

Why Choose JMS Exteriors for Your New Shingle Roof

JMS Exteriors LLC is known for integrity, craftsmanship, and attention to detail. Every roof we install is built to last using proven materials and expert installation techniques. Homeowners trust us because we:

• Use only high-performance GAF shingles
• Provide honest, no-pressure consultations
• Offer transparent estimates and dependable service
• Deliver clean, efficient installations with lasting results

With decades of experience and a strong reputation in the community, JMS Exteriors remains the go-to roofing contractor for homeowners seeking reliable, high-quality shingle roof installations.

If you’re ready to explore your options or have questions about the roofing process,contact JMS Exteriors todayto speak with our friendly experts.

Conclusion: Invest in Quality That Lasts

Now that you understand what asphalt shingles are made of and why they last so long, it’s easy to see why they remain the most popular roofing material in the U.S. Combining strength, affordability, and style, they offer unbeatable protection for your home.

If you’re considering a new roof or want to check the condition of your current shingles, JMS Exteriors LLCis here to help. Our team of certified experts specialises in new shingle roof installations using premium GAF materials designed for decades of dependable performance.

Don’t wait for small issues to become major problems — schedule your free roof inspection today and discover why homeowners trust JMS Exteriors for lasting roofing solutions.

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