A roll of rolled roofing is typically 3 feet wide and 36 feet long. Most standard rolls come in these dimensions, which cover about 100 square feet when installed. This is also called one roofing square. Some rolls can be 36 feet by 3 feet, while others may vary slightly. Rolled roofing is an affordable option for flat or low-slope roofs. It’s easier to install than shingles because it comes in large sheets instead of individual pieces.
What Size Are Standard Rolls?
Standard rolled roofing measures 36 feet long and 3 feet wide. When you multiply these measurements, you get 108 square feet of material. Most contractors round this to 100 square feet, which equals one roofing square.
According to RubyHome (2025), roof installation costs range from $4 to $40 per square foot. For rolled roofing on flat roofs, you will typically fall toward the lower end of that range. This makes rolled roofing one of the most budget-friendly options for property owners.
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How Many Rolls Do You Need?
To figure out how many rolls you need, measure your roof size in square feet. Then divide by 100 to get the number of squares. For a 1,700 square foot roof, you would need about 17 rolls.
According to the National Association of Home Builders, the average U.S. roof size is 2,647 square feet or 26.47 squares. This means most homes would need about 26 to 27 rolls of roofing material to complete a full replacement.
Types of Rolled Roofing Materials
Rolled roofing comes in different styles and materials. The most common type is asphalt rolled roofing, which is budget-friendly. According to RubyHome (2025), asphalt shingles account for approximately 80% of roofing projects across the U.S. Rolled versions are part of this popular category.
Other options include tar and gravel rolled roofing, modified bitumen, and rubber or synthetic rolls. Each type has different costs and lifespans.
| Material Type | Roll Size | Typical Lifespan |
|---|---|---|
| Asphalt Rolled | 36 ft x 3 ft | 5 to 10 years |
| Tar and Gravel | 36 ft x 3 ft | 8 to 15 years |
| Modified Bitumen | 36 ft x 3 ft | 10 to 20 years |
| Rubber or Synthetic | 36 ft x 3 ft | 15 to 25 years |
Cost and Installation Tips
Rolled roofing is cheap compared to other roof types. A typical roll costs between $50 and $200, depending on quality. According to RubyHome (2025), flat roofing like rubber, PVC, and similar materials costs $5.50 to $7.50 per square foot when installed.
You can install rolled roofing yourself if you are comfortable with basic roof work. Many homeowners choose DIY to save money. However, improper installation can lead to leaks and costly repairs later. Professional installation is often worth the cost for long-term protection.
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If you need help with your roof, reach out to a trusted roofing company for clear pricing and reliable service.