Montreal roofers > Roof types > Asphalt shingle roof

Asphalt Shingle Roof

Asphalt shingles are a popular roofing option due to their affordability and adaptability to various climates. They perform well in both harsh winters with heavy snowfall and hot summers, making them a reliable choice for different environments. Their lightweight nature reduces stress on the roof structure, contributing to a longer lifespan.

Our Montreal-based roofing experts have put together this guide to help you understand how asphalt shingles work and why they may be the right choice for your project.

What Are Asphalt Shingles?

Asphalt shingles are a hot-pressed roofing material made from fiberglass or cellulose. They are composed of:

  • 50–60% small granules
  • 30–35% bitumen

Available in various styles and colors, asphalt shingles can complement different architectural designs and aesthetic preferences.

Why Choose Asphalt Shingles?

  • Easy to install and budget-friendly
  • Available in different textures and colors
  • Surface coated with colored slate or ceramic granules
  • Designed with lower sections called “tabs” for better coverage

Types of Asphalt Shingles

1. Architectural Shingles

  • Best for modern and contemporary homes
  • Feature a dimensional, layered design for an elegant look
  • Provide enhanced durability and weather resistance

2. Victorian-Style Shingles

  • Ideal for historical or classic-style homes
  • Mimic the look of cedar shakes, offering both aesthetic appeal and protection

3. Three-Tab Shingles

  • A cost-effective choice for standard residential roofs
  • Simple to install and perfect for low-slope roofs
  • Most commonly used in budget-friendly roofing projects

Advantages and Disadvantages of Asphalt Shingles

1. Affordable Pricing

  • Most budget-friendly roofing option
  • Lower cost of materials and installation compared to metal or copper roofs
  • A top choice for homeowners looking for cost-effective roof renovations

2. Quick and Easy Installation

  • Simple to install, reducing labor costs
  • Many roofing contractors are familiar with this material, making it easy to find a qualified professional

3. Durability

  • High-quality asphalt shingles can last 20–25 years with proper installation
  • Well-suited for areas with heavy rainfall, as long as the roof has adequate slope for drainage

4. Wide Aesthetic Variety

  • Available in multiple colors, textures, and styles
  • Can mimic slate or cedar shakes, making them a versatile choice for any home design

5. Versatile Roofing Solution

Compatible with various roof shapes, including:

  • L-shaped roofs
  • Half-hipped roofs
  • Complex roof structures

6. Impact and Wind Resistance

  • Some asphalt shingles are rated for hail impact and high wind resistance
  • Ideal for regions prone to severe storms

Potential Drawbacks

Despite their advantages, asphalt shingles have some limitations:

  1. Less Waterproof Than Other Roofing Systems
  • Asphalt shingles do not offer the same waterproofing efficiency as metal or elastomeric membranes
  • Low-slope roofs are especially vulnerable to water infiltration
  1. Installation Quality Affects Lifespan
  • Poor installation can lead to premature wear and reduce durability
  • Proper nailing and sealing are essential for longevity
  1. Environmental Concerns
  • Manufacturing and disposal of asphalt shingles involve non-renewable materials like bitumen and fiberglass
  • Recycling options for asphalt shingles are limited in some regions
  1. Regular Maintenance Required
  • Routine inspections are necessary to check for damage from wind or falling debris
  • Immediate repairs are needed after strong storms to prevent leaks
  1. Fading and Discoloration Over Time
  • Asphalt shingles can lose their color due to prolonged UV exposure
  • Partial replacements or touch-ups may be necessary to maintain the roof’s appearance

How to Install and Maintain an Asphalt Shingle Roof

Installation Process

Asphalt shingle installation consists of three key steps:

Prepare the roof

  • Ensure the surface is clean and dry before installation
  • Purchase high-quality shingles from a reputable manufacturer (e.g., IKO shingles) for better durability

Apply a protective underlayment

  • This prevents water infiltration and enhances the roof’s lifespan

Install shingles from the bottom up

  • Start at the roof’s edge and work upward
  • Ensure each shingle is properly nailed and sealed to prevent lifting or leaks

Roof Maintenance Tips

  • Inspect your roof twice a year (spring and fall)
  • Check for damaged or missing shingles after storms
  • Clear leaves and branches to prevent water pooling
  • Use a leaf blower to clean gutters and downspouts

Common Asphalt Shingle Repairs

Sealing Leaks

Use roof sealant or caulking to patch small leaks

Adding Flashing

Installing new flashing improves waterproofing and extends roof life

Repairing Roof Valleys (Noues)

  • Roof valleys collect water and debris, increasing the risk of leaks
  • Repairing a valley involves replacing shingles and improving drainage

Why Choose Asphalt Shingles for Your Roof?

  • Affordable and widely available
  • Quick and easy installation
  • Durable with proper maintenance
  • Variety of styles and colors to match any home
  • Resistant to wind, hail, and impact (depending on the model)

If you’re looking for a budget-friendly, versatile roofing solution, asphalt shingles are an excellent choice.