Roll roofing offers a budget-friendly solution for low-slope roofs on sheds, garages, and some home additions. This guide breaks down the current pricing, explains what drives the cost, and provides practical tips to estimate, compare, and save on roll roofing projects. Readers will learn material options, labor factors, and how to decide when roll roofing is the right choice for durability, weather resistance, and value. The goal is to help homeowners understand roll roofing cost and make informed decisions that fit their budget and climate.
What Is Roll Roofing?
Roll roofing is a pliable asphalt- or mineral-coated material sold in wide rolls that cover flat or low-slope roofs. It is typically installed in layers with a protective cap and sealant, making it a common option for sheds, workshops, pole barns, and other structures with slopes too shallow for traditional shingles. Roll roofing comes in several varieties, including standard asphalt roll, mineral-surfaced roll roofing (MSR), and fiberglass-mat reinforced options. It is lightweight, relatively easy to install, and generally the least expensive roofing material available for low-slope applications.
Widths commonly range from 36 inches to 39 inches, and thickness or weight influences durability and price. While roll roofing can be a quick DIY project, professional installation ensures proper alignment, flashing, and sealing around penetrations. The choice among types and thickness will affect long-term performance, weather resistance, and maintenance needs.
How Much Does Roll Roofing Cost?
Material Costs
Material costs for roll roofing are typically quoted per square foot. Basic asphalt roll roofing generally ranges from about $0.40 to $0.75 per sq ft. Mineral-surfaced roll roofing (MSR) commonly costs about $0.70 to $1.50 per sq ft, while premium or fiberglass-reinforced options can run $1.00 to $2.00 per sq ft. For a 100 sq ft section, material costs might be roughly $40 to $150 depending on the product chosen. Width, thickness, and the presence of a protective granule surface are key price drivers.
Labor, underlayment, and accessories are typically not included in the base material price and can add to the total. Prices can vary by region, supplier, and the availability of off-the-shelf rolls in your area. Always confirm current prices with local suppliers before planning a project.
Labor and Installation
Labor costs for roll roofing installation generally range from about $1.50 to $3.00 per sq ft, depending on complexity, access, and local market rates. If removal of an existing roof is required, expect an additional $0.50 to $1.50 per sq ft for disposal and disposal-related labor. In total, a fully installed roll roof typically falls in the range of $2.00 to $4.50 per sq ft, with higher-end work in expensive markets or on complex structures.
Seasonality, accessibility, roof pitch, and the need for flashing, edge trim, or primer can shift costs. For a small shed with minimal penetrations, labor may be toward the lower end; for a larger home addition with multiple dormers and vents, labor can push costs higher.
Factors That Affect Price
- Roof size and slope: Larger areas cost more, and steeper pitches can increase labor time and safety concerns.
- Material choice: MSR or premium rolls cost more than basic asphalt, influencing both material and long-term performance.
- Removal and disposal: If an old roof must be removed, expect added labor charges.
- Underlayment and flashing: Additional moisture barriers, seam tapes, and flashing around chimneys or skylights add to cost.
- Warranty and brand: Longer warranties and known brands may carry higher upfront costs but can reduce long-term maintenance.
- Location: Transport and contractor rates vary by region and season.
Cost By Project Type
Sheds And Outbuildings
For sheds and similar outbuildings, roll roofing is a popular choice due to low cost and simplicity. A typical shed roof of around 200 sq ft installed can cost approximately $400 to $900 in total, assuming mid-range material and standard labor. Smaller projects at 100–150 sq ft may fall in the $200 to $450 range, while larger sheds approach the upper end if specialty trim or extensive flashing is required.
Home Roof Overlays Or Replacements
For low-slope sections of residences, roll roofing can be an economical alternative to more expensive membrane systems. A 1,000–1,500 sq ft roof might cost roughly $2,000 to $5,000 installed, depending on materials and labor. Homes with multiple penetrations or unusual geometry can exceed this range. It is important to weigh cost per square foot against expected lifespan and maintenance needs when comparing options.
Repairs Versus Full Replacement
For small repairs on roll-roofed areas, costs can be limited to patching or resealing at a few hundred dollars, depending on the extent of damage and accessibility. In contrast, full replacement of a roll roofing section or entire low-slope roof will align with the ranges above. When choosing between patching and full replacement, consider future weather exposure, warranty coverage, and whether the repaired area will effectively protect the structure over time.
Materials Quality And Lifespan
Roll roofing’s lifespan varies widely with material quality, climate, and maintenance. Basic asphalt roll roofs typically last 5 to 10 years in moderate climates and somewhat longer in dry or mild conditions. Mineral-surfaced rolls may extend to a 10 to 15-year range, while premium fiberglass-reinforced rolls can reach 12 to 20 years with proper installation and upkeep. Extreme heat, heavy rainfall, or hail can shorten life expectancy. Regular inspection, cleaning, and timely resealing can help maximize performance and postpone replacement.
Durability is also tied to installation quality. Proper surface preparation, clean seams, correct fastener spacing, and appropriate flashing around edges and penetrations are essential for preventing leaks. In regions with high UV exposure, choosing UV-resistant or granule-protected rolls can improve longevity.
Pros And Cons
- Pros: Low initial cost, quick installation, lightweight and easy to handle, good for flat or low-slope roofs, minimal structural load.
- Cons: Not as durable as shingles or metal roofing, shorter lifespan, more maintenance and potential for leaks at seams, limited aesthetic options.
DIY Versus Professional Installation
Roll roofing is frequently tackled by DIY homeowners due to its straightforward installation. However, professional installation ensures accurate seam sealing, nail pattern, and proper flashing, which can reduce call-backs and moisture intrusion. DIY projects should follow manufacturer guidelines, use appropriate safety equipment, and plan for sufficient time to complete the job without rushing checkout operations. For complex roofs, or where warranties require professional installation, hiring a contractor is advisable.
Quick Cost Calculator
To estimate a project, multiply the roof area by the chosen price per square foot. For example, a 1,000 sq ft low-slope roof with mid-range materials and labor could range from about $2,000 to $4,500. Use a conservative mid-point of around $3.25 per sq ft for planning, but adjust for removal, flashing, and underlayment as needed. Always request written quotes that itemize material, labor, disposal, and any permit fees.
Where To Buy And How To Save
- Buy from reputable suppliers such as major home improvement retailers, roofing distributors, and local lumberyards to ensure material availability and warranty validity.
- Compare quotes from multiple contractors to gauge regional pricing and avoid overcharges.
- Choose standard sizes and colors to minimize waste and maximize value.
- Bundle purchases for discounts on rolls, nails, and sealing products.
- Plan for removal and disposal costs upfront to avoid surprise charges later.