Rolled roofing offers a simple, cost-effective option for covering low-slope roofs, sheds, barns, and other outbuildings. This guide explains the main types of rolled roofing, their typical applications, installation considerations, and practical pros and cons. Understanding the differences helps homeowners choose a product that matches climate, roof pitch, and maintenance expectations. The following sections cover asphalt, fiberglass, self-adhering, metal, and specialty rolled roofing options, along with performance factors to consider before purchase.
Asphalt Rolled Roofing
Asphalt rolled roofing is the most common type used on low-slope roofs. It typically arrives in mineral-surfaced rolls with a mineral surface that reflects sunlight and protects the underlying asphalt layer. Some varieties are fiberglass-reinforced for added strength, while others are traditional asphalt-saturated paper. Asphalt rolled roofing is inexpensive, easy to handle, and suitable for sheds, porches, and garages with simple roof lines. It is not ideal for prolonged high-heat exposure or roof pitches below 3:12, where sealing and drainage are critical.
Key characteristics: lightweight, low cost, quick installation, generally 20–30 mils thick depending on product, lifespan commonly 5–15 years with proper maintenance.
Common uses: low-slope residential roofs, utility buildings, temporary coverings, and budget-friendly DIY projects.
Installation considerations
Rolls are traditionally nailed with asphalt or rubberized nails, then sealed with roofing cement or lap sealant at seams. Proper surface preparation, edge exposure protection, and alignment are important to prevent wind uplift and water intrusion. A protective drip edge and trim can extend life in sunnier regions where UV exposure accelerates aging.
Fiberglass- Reinforced Roll Roofing
Fiberglass-reinforced rolled roofing uses a fiberglass mat embedded in asphalt for added tensile strength and puncture resistance. This option improves durability compared with traditional mineral-surfaced asphalt, particularly on roofs with more movement or minor structural irregularities. Fiberglass reinforcement helps resist cracking under temperature fluctuations and reduces edge fraying.
Key characteristics: higher tear resistance, improved durability, often available in mineral surfaces or plain asphalt, typically 25–30 mils thick.
Common uses: low-slope residential and small commercial structures that require a balance of cost and longevity.
Self-Adhering (Sticky) Rolled Roofing
Self-adhering rolled roofing features a pressure-sensitive adhesive backing covered by a release film. When the film is removed, the sheet adheres to the substrate, creating an fewer-wind uplift installation compared to mechanically fastened varieties. These products often include a polymer-modified asphalt or rubberized asphalt layer for enhanced adhesion and weather resistance. They are popular where a clean, fast, wind-resistance-friendly installation is needed, and where radiant heat or wind conditions make mechanical fastening challenging.
Key characteristics: easy to install, fewer fasteners, strong adhesion, good water resistance, may require a separate top coat or cap for UV protection in sunnier climates.
Common uses: roofs with limited access for tools, DIY projects, reroofing projects where quick installation is advantageous.
Metal Rolled Roofing
Metal rolled roofing comes in long metal sheets rolled into narrow rolls, typically made from steel, aluminum, or galvalume-coated steel. Metal rolled roofing offers excellent durability, wind resistance, and fire performance. It is heavier and may require professional installation to ensure proper heat expansion gaps and venting. Metal rolls are available in various coatings and finishes, including reflective coatings to improve energy efficiency in hot climates.
Key characteristics: high durability, long service life, good wind uplift resistance, variable weights depending on metal type, installation typically requires mechanical fasteners or seam sealing.
Common uses: metal-roofed sheds, barns, agricultural buildings, and modern residences seeking a durable, low-maintenance option.
Other Rolled Roofing Variants
In addition to the major categories, rolled roofing may include specialty products such as rubberized asphalt self-adhering membranes and polymer-modified asphalt compositions. These variants emphasize improved flexibility, cold-weather performance, or specific environmental resistance like chemical exposure or high UV environments. They can be suitable for retrofits, roof repairs, or projects requiring unique substrate compatibility.
Key characteristics: enhanced flexibility, good adhesion in diverse climates, may require specialized tools or primers, sometimes more expensive than standard asphalt rolls.
Installation Considerations Across Types
- Roof pitch: Most rolled roofing types are designed for low-slope roofs (generally 2:12 to 4:12). Higher pitches may require alternative coverings or additional underlayment.
- Underlayment: A suitable underlayment, such as a self-adhering membrane or roofing felt, helps improve waterproofing and seam protection, especially in areas with heavy rainfall or snowfall.
- Ventilation and drainage: Proper slope, gutters, and downspouts prevent water pooling at seams and edges, extending life.
- Seam treatment: Seams are the primary failure points; apply sealant, tape, or lap sealant as recommended by the manufacturer to prevent leaks.
- UV protection: In sunny climates, consider reflective coatings or white/gray finishes to reduce heat absorption and energy costs.
Pros And Cons By Type
Asphalt rolled roofing: Pros—low cost, easy handling, fast installation; Cons—shorter lifespan, less durable in extreme heat or heavy traffic, more frequent maintenance.
Fiberglass reinforced: Pros—better tear and puncture resistance, longer life than plain asphalt; Cons—slightly higher cost, still limited lifespan compared to metal.
Self-adhering: Pros—faster, fewer penetrations, good seal; Cons—can be more expensive, requires clean surface for optimal adhesion.
Metal rolled roofing: Pros—long life, high wind resistance, low maintenance; Cons—higher upfront cost, potential noise in rain, needs precise installation.
Specialty variants: Pros—enhanced flexibility and climate performance; Cons—cost and availability can vary by region and supplier.
Maintenance And Longevity
Rolled roofing generally requires periodic inspection for lifted edges, loose fasteners, and sealant wear. In most climates, an occasional reseal or coat can dramatically extend life. Regular cleaning to remove debris and moisture buildup, prompt repairs of punctures or tears, and protection of edges from wind uplift are essential. Metal rolls may benefit from painting or coating over time to maintain reflectivity and corrosion resistance, while asphalt varieties often benefit from a fresh sealant at seams every few years depending on exposure.
Expected lifespans: Asphalt-based rolls typically last 5–15 years, fiberglass variants extend to 10–20 years, and metal rolls can exceed 30–40 years with proper care and installation.
Choosing The Right Rolled Roofing
Selecting a rolled roofing type should consider climate, roof slope, building use, and budget. For utility buildings with straightforward roofs, asphalt or fiberglass rolls offer cost-effective performance. For projects demanding durability and longer life, metal rolled roofing provides significant value over time, especially in hail-prone regions or areas with heavy wind. Self-adhering options suit rapid repairs or projects in tight spaces where traditional nailing is challenging. Always verify product warranties, installation instructions, and regional availability before purchasing.
By understanding the differences among asphalt, fiberglass, self-adhering, and metal rolled roofing, homeowners can align material choices with climate, roof design, and maintenance plans. This alignment ensures reliable protection, cost efficiency, and a practical balance between upfront price and long-term value.