Roll roofing offers a budget-friendly option for covering flat or low-slope roofs. This guide breaks down the cost per square (100 square feet) for roll roofing in the United States, including material prices, installation labor, and factors that drive price variation. Understanding these elements helps homeowners plan, compare bids, and estimate long-term maintenance needs for roll roofing projects.
What Is Roll Roofing?
Roll roofing is a continuous sheet product, typically made from asphalt-saturated felt or fiberglass reinforced asphalt, installed in overlapping strips. It is best suited for low-slope roofs, sheds, porches, or non-heritage structures where a quick, economical solution is preferred. Roll roofing comes in colors and textures that resemble traditional shingles but at a fraction of the cost and installation time.
Average Cost Per Square
Costs are usually quoted per square (100 square feet) or per square foot. For asphalt roll roofing, the material cost generally ranges from $40 to $90 per square, or about $0.40 to $0.90 per square foot. Installation and labor typically add about $150 to $300 per square, depending on roof complexity and local labor rates. In total, homeowners can expect a installed cost of roughly $190 to $390 per square for standard roll roofing projects. It’s common to see bids clustered around mid-range values, but regional differences can widen this spread.
Material Types And Their Costs
The two most common roll roofing materials are asphalt-saturated felt and fiberglass-reinforced asphalt.:
- Asphalt-Saturated Felt: The most economical option, often used for sheds or temporary structures. Material costs typically sit near the lower end of the range ($40–$60 per square).
- Fiberglass-Reinforced Asphalt: More durable and better suited to slightly higher-wind areas or longer-term applications. Material costs usually run $50–$90 per square.
Other factors that affect material cost include pigment stability, UV resistance, and whether the roll is sold in standard widths (usually 36 inches) that minimize waste.
Labor And Installation Considerations
Labor costs for roll roofing depend on roof size, pitch, and complexity. Factors that influence labor include edge detailing, flashing, and existing roof deck condition. Typical labor ranges are:
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- Simple, low-slope roofs: About $150–$250 per square.
- Moderate complexity or higher wind exposure: About $200–$300 per square.
- Very large or complex roofs: Up to $300–$400 per square or more, depending on site access and disposal needs.
Installation tips to optimize cost and performance include ensuring a clean deck, using appropriate fasteners, and lining seams correctly to prevent leaks. While roll roofing is faster to apply than shingles, improper installation can lead to premature failures and higher long-term costs.
Regional Differences And Market Factors
Prices vary by region due to labor markets, material supply, and climate considerations. The U.S. Southeast often sees higher labor costs due to volume and demand, while rural areas may offer lower bids but longer project times. Coastal regions may require additional moisture barriers or corrosion-resistant hardware, influencing total costs. Seasonal demand, such as spring and late summer, can also shift prices upward temporarily.
New Roof vs. Roof Repair
Roll roofing is commonly used for new, budget-focused installations or quick repairs. For an existing roof in good condition with a flat or low-slope profile, roll roofing can be a cost-effective option. If the underlying deck has issues, surprises like water damage or rot can raise costs significantly. In contrast, re-covering an older roof with roll roofing may be more economical than full tear-off, provided the structure supports the chosen system and permits are in place.
Cost-Saving Strategies
- Get multiple bids: Compare material quality, warranty coverage, and crew experience to avoid overpaying for basic products.
- Choose standard widths and colors: Reduces waste and trimming, lowering labor time.
- Time projects for off-peak seasons: Some contractors offer lower rates in shoulder seasons.
- Inspect and prep the deck: A clean, dry surface speeds installation and reduces call-backs.
- Consider a lightweight underlayment: If permitted, this can improve durability without adding substantial weight.
Maintenance And Longevity
Roll roofing typically requires less maintenance than some other low-slope systems but does not last as long as traditional shingles or metal. Expect a typical lifespan of 5 to 12 years for asphalt roll roofing, depending on climate, exposure, and maintenance. Periodic inspection after storms and prompt sealing of minor leaks can extend service life. Replacing damaged sections or re-coating seams may be necessary over time, adding to long-term costs.
Frequently Asked Questions
- Can roll roofing be used on flat roofs? Yes, it is most commonly used on flat or low-slope roofs where cost is a primary concern.
- Is roll roofing cheaper than shingles? Yes, in most cases, roll roofing has a lower material and labor cost, but its lifespan may be shorter.
- What is the best underlayment for roll roofing? A compatible underlayment that conforms to the manufacturer’s recommendations ensures proper adhesion and moisture protection.
- How long does installation take? For a small shed or porch, a crew can complete it in a day or two; larger residential roofs take longer depending on size and weather.
Bottom line: Roll roofing offers a cost-effective solution for low-slope surfaces with reasonable durability. By understanding the material options, labor variables, and regional price differences, homeowners can accurately estimate costs per square and plan a project that fits their budget and performance goals.