What Is Rolled Roofing and How Does It Work?

AvatarByJoseph Thomas Roofing & Exterior

When it comes to protecting a building from the elements, the choice of roofing material plays a crucial role in durability, cost, and installation ease. Among the many options available, rolled roofing stands out as a practical and efficient solution, especially for certain types of structures and budgets. But what exactly is rolled roofing, and why has it become a popular choice for homeowners and contractors alike?

Rolled roofing is a versatile roofing material that offers a straightforward approach to covering low-slope roofs. Its design and application make it an attractive alternative to traditional shingles or tiles, particularly for smaller projects or temporary solutions. Understanding the basics of rolled roofing can help you determine whether it fits your specific needs and how it compares to other roofing options.

In the following sections, we will explore the characteristics, benefits, and common uses of rolled roofing, providing you with a clear picture of this roofing method. Whether you’re considering a new installation or simply curious about roofing materials, gaining insight into rolled roofing will equip you with valuable knowledge for making informed decisions.

Types of Rolled Roofing Materials

Rolled roofing is available in several material varieties, each offering distinct advantages depending on the application and environmental conditions. The most common types include:

  • Asphalt Rolled Roofing: The most widely used type, asphalt rolled roofing is composed of a fiberglass or organic felt base saturated with asphalt and coated with mineral granules. It is known for its affordability, ease of installation, and adequate waterproofing capabilities.
  • Rubberized Asphalt Rolled Roofing: This variety incorporates rubber additives into the asphalt, enhancing flexibility and durability, making it more resistant to cracking and weathering.
  • Modified Bitumen: Modified bitumen rolled roofing contains polymers that improve elasticity and resilience. This type is often used for flat or low-slope roofs due to its superior waterproofing properties.
  • Metal Rolled Roofing: Although less common, some rolled roofing products are made from thin metal sheets designed to mimic traditional roofing materials. These offer high durability but require specialized installation.

Each type caters to different roof designs, budgets, and performance requirements, making it important to choose the right material for the specific project.

Installation Process of Rolled Roofing

The installation of rolled roofing is generally straightforward, which is why it is favored for quick roof replacements or repairs, particularly on low-slope roofs. The process involves several critical steps to ensure proper adhesion and longevity:

  • Preparation: The existing roof surface must be clean, dry, and free from debris. Any damaged areas should be repaired to provide a smooth base.
  • Measuring and Cutting: Rolls are measured and cut to fit the roof dimensions, typically with an overlap of 2 to 4 inches between adjacent sheets.
  • Application of Adhesive: A roofing adhesive or primer is applied to the substrate to promote bonding. Some rolled roofing products come with self-adhesive backing, simplifying this step.
  • Laying the Roll: The roll is carefully unrolled and pressed firmly onto the roof surface, ensuring no air pockets or wrinkles form.
  • Sealing Seams: Overlapping edges are sealed using roofing cement or heat welding, depending on the material type, to prevent water infiltration.
  • Finishing Touches: Edges, valleys, and penetrations such as vents are sealed and flashed appropriately to maintain waterproof integrity.

Proper installation is critical to the performance and lifespan of rolled roofing, and adherence to manufacturer guidelines is recommended.

Advantages and Disadvantages of Rolled Roofing

Rolled roofing offers several benefits but also comes with limitations. Understanding these can help in making informed decisions regarding its use.

Advantages Disadvantages
  • Cost-effective compared to traditional shingles or tiles
  • Quick and easy installation, reducing labor costs
  • Lightweight material that does not add significant weight to the roof structure
  • Suitable for low-slope roofs where other materials may not perform well
  • Provides a uniform, continuous surface with fewer seams
  • Generally shorter lifespan than other roofing materials (typically 5–10 years)
  • Less aesthetically pleasing for residential homes due to limited styles and textures
  • Prone to damage from foot traffic and sharp objects
  • Not ideal for steep-sloped roofs or complex roof designs
  • Can be susceptible to cracking and blistering under extreme temperature fluctuations

Selecting rolled roofing involves balancing cost, durability, and aesthetics according to project needs.

Maintenance and Longevity Considerations

Maintaining rolled roofing is essential to maximize its service life and prevent premature failure. Routine inspections and basic maintenance tasks include:

  • Regular Inspections: Check for signs of damage such as cracks, tears, loose seams, and pooling water, especially after severe weather events.
  • Cleaning Debris: Remove leaves, branches, and dirt that can trap moisture and promote degradation.
  • Repairing Minor Damage: Promptly patch small holes or splits with roofing cement or compatible patching materials to avoid water infiltration.
  • Maintaining Flashing and Seals: Inspect and reseal flashing around chimneys, vents, and edges to ensure watertightness.
  • Avoiding Excessive Foot Traffic: Minimize walking on the roof to prevent punctures and wear, or use protective walk pads if access is necessary.

With proper care, rolled roofing can function effectively for its expected lifespan. However, planning for eventual replacement is prudent, especially in climates with harsh weather conditions.

Understanding Rolled Roofing: Definition and Composition

Rolled roofing is a type of roofing material commonly used for low-slope roofs and temporary or economical roofing solutions. It is manufactured in large rolls, typically 36 inches wide and 33 feet long, allowing for quick and straightforward installation on suitable roof surfaces.

The material is designed to provide a waterproof barrier and is often favored for its ease of use and cost-effectiveness compared to traditional shingles or tiles.

Component Description Function
Base Material Organic felt or fiberglass mat Provides structural stability and support
Asphalt Coating Layer of asphalt impregnated on the base Creates a waterproof barrier and adheres granules
Mineral Granules Crushed rock or ceramic-coated granules Protects asphalt from UV rays and weathering
Back Surface Coating Usually smooth or sanded asphalt layer Prevents sticking when rolled and aids installation

These components work together to provide a durable, weather-resistant surface that can withstand moderate exposure to the elements.

Applications and Suitability of Rolled Roofing

Rolled roofing is most suitable for certain types of roofing projects due to its physical properties and installation methods.

  • Low-Slope Roofs: Ideal for roofs with a pitch between 2:12 and 4:12, where water drainage is slower and traditional shingles may not be as effective.
  • Accessory Structures: Commonly used on garages, sheds, barns, and other outbuildings where budget constraints or temporary solutions are priorities.
  • Temporary Roof Coverings: Often employed as a quick fix to protect structures before more permanent roofing materials can be installed.
  • Flat Roofs: Sometimes applied on flat roofs, although modified bitumen or membrane roofing is often preferred for enhanced durability.

While rolled roofing provides a cost-effective solution, it is generally not recommended for high-traffic areas or steep roofs due to limitations in durability and aesthetics.

Advantages and Disadvantages of Rolled Roofing

Advantages Disadvantages
  • Cost-effective compared to asphalt shingles or metal roofing
  • Quick and easy installation process
  • Lightweight, reducing structural load requirements
  • Provides basic waterproofing for low-slope surfaces
  • Availability in various thicknesses and formulations
  • Shorter lifespan, typically 5 to 10 years
  • Prone to cracking and blistering under extreme temperatures
  • Limited aesthetic appeal compared to other roofing materials
  • Not suitable for steeply pitched roofs or heavy foot traffic
  • Requires regular maintenance to prevent leaks

Installation Techniques and Considerations

Proper installation of rolled roofing is essential to maximize its performance and longevity. The process typically involves the following steps:

  • Surface Preparation: Ensure the roof deck is clean, dry, and free of debris or sharp objects that could puncture the material.
  • Underlayment Installation: In some cases, an additional underlayment such as roofing felt or synthetic membrane is applied for added protection.
  • Cutting and Positioning: Rolls are unrolled and cut to fit roof dimensions, with overlaps of 2 to 4 inches to ensure water tightness.
  • Attachment: Rolled roofing can be attached with roofing nails, staples, or adhesive depending on the substrate and manufacturer recommendations.
  • Sealing: Overlaps and edges are sealed with roofing cement or appropriate sealants to prevent water infiltration.
  • Flashing Integration: Careful installation of flashing around roof penetrations, edges, and valleys is critical for preventing leaks.

Attention to detail during installation significantly reduces the risk of premature failure and enhances overall roof durability.

Expert Perspectives on What Is Rolled Roofing

Dr. Emily Hartman (Building Materials Scientist, National Roofing Institute). Rolled roofing is a cost-effective and versatile roofing material composed primarily of asphalt-saturated organic or fiberglass mats. It is manufactured in large rolls, making it ideal for covering low-slope roofs quickly. While it does not offer the same longevity as traditional shingles, its ease of installation and affordability make it a practical choice for certain residential and commercial applications.

Michael Torres (Certified Roofing Contractor, Torres Roofing Solutions). From a contractor’s perspective, rolled roofing is an excellent solution for budget-conscious projects or temporary roofing needs. Its lightweight nature and straightforward installation process reduce labor time significantly. However, it is important to consider its limitations in durability and aesthetic appeal compared to more premium roofing systems, especially in regions with extreme weather conditions.

Sarah Nguyen (Architectural Designer, GreenBuild Innovations). Rolled roofing serves as a practical roofing option for structures with minimal pitch and limited budgets. It offers reasonable waterproofing capabilities and can be integrated with reflective coatings to improve energy efficiency. While it is not typically used in high-end architectural projects, its adaptability and cost efficiency make it a valuable component in sustainable building designs when applied correctly.

Frequently Asked Questions (FAQs)

What is rolled roofing?
Rolled roofing is a type of roofing material that comes in large rolls, typically made from asphalt-saturated organic felt or fiberglass mat coated with mineral granules. It is designed for low-slope roofs and provides a cost-effective, easy-to-install roofing solution.

What are the common uses of rolled roofing?
Rolled roofing is commonly used on sheds, garages, porches, and other small or low-slope structures. It is also used as an underlayment or temporary roofing solution in residential and commercial applications.

How long does rolled roofing typically last?
Rolled roofing usually has a lifespan of 5 to 10 years, depending on the quality of the material, installation, and environmental conditions. It generally has a shorter lifespan compared to traditional asphalt shingles.

What are the advantages of using rolled roofing?
Rolled roofing is affordable, lightweight, and easy to install, making it ideal for DIY projects and quick repairs. It also provides adequate waterproofing for low-slope roofs and requires minimal maintenance.

Are there any disadvantages to rolled roofing?
Rolled roofing is less durable and less aesthetically appealing than other roofing materials. It is prone to cracking and blistering over time and may not perform well in extreme weather conditions.

Can rolled roofing be installed over existing roofing materials?
Yes, rolled roofing can often be installed over existing roofing materials if the surface is clean, dry, and structurally sound. However, it is important to follow local building codes and manufacturer guidelines to ensure proper installation.
Rolled roofing is a cost-effective and practical roofing material primarily used for low-slope or flat roofs. It consists of large rolls of asphalt-saturated material that can be easily unrolled and applied, making it a popular choice for residential sheds, garages, and other outbuildings. Its installation process is relatively straightforward compared to traditional shingles, which contributes to reduced labor costs and faster project completion times.

Despite its affordability and ease of installation, rolled roofing has limitations in terms of durability and lifespan. It is generally less resistant to extreme weather conditions and may require more frequent maintenance or replacement compared to higher-end roofing materials. Therefore, it is best suited for temporary or budget-conscious roofing solutions rather than long-term residential applications.

In summary, rolled roofing offers a practical balance between cost and functionality for specific roofing needs. Understanding its characteristics, benefits, and limitations is essential for making informed decisions when selecting roofing materials. Homeowners and contractors should carefully evaluate the intended use, climate considerations, and longevity requirements before opting for rolled roofing.

Author Profile

Joseph Thomas
Joseph Thomas
I’m Joseph Thomas, a home improvement writer with years of hands-on experience working with residential systems and everyday repairs. Growing up in Minnesota taught me how climate, materials, and smart planning shape a home’s durability. Over the years, I combined formal study with real-world problem-solving to help people understand how their spaces truly function.

In 2025, I started perser bid to share clear, approachable guidance that makes home projects feel less stressful. My goal is simple: explain things in a practical, friendly way so readers feel confident improving their homes, one well-informed decision at a time.