Roll of roofing shingle, often referred to as roll roofing or asphalt roll roofing, is a flexible, sheet-like material used primarily on low-slope or flat roofs. It provides a quick, economical solution for protecting roofs from weather while awaiting more permanent repairs or as a long-term option on smaller structures. This article explains what a roll of roofing shingle is, the main material types, installation basics, costs, and maintenance considerations to help homeowners make informed decisions.
What Is a Roll Of Roofing Shingle?
A roll of roofing shingle is a continuous sheet material designed to cover roof surfaces. Unlike traditional individual asphalt shingles, roll roofing comes in wide rolls that are unrolled and fastened in place. It resists water intrusion and offers a vapor barrier, making it suitable for garages, sheds, porches, and low-slope residential roofs. Roll roofing is typically manufactured from asphalt-saturated organic felt or fiberglass, sometimes with mineral granules on the surface for UV protection and color options.
Types Of Roll Roofing Shingle Materials
Asphalt Roll Roofing
Asphalt roll roofing is the most common and economical option. It comes in two main thicknesses: 30-pound and 40-pound felt equivalents, often accompanied by a mineral-surfaced top layer. The material is easy to transport, cut, and fasten with nails or roofing adhesive. It performs best on roofs with a slope that minimizes water ponding and is compatible with standard roofing nails and sealant.
Modified Bitumen Roll Roofing
Modified bitumen combines asphalt with polymer modifiers (such as Columbia or APP/SBS) to improve elasticity and UV resistance. This type is popular for flat or low-slope roofs because it offers enhanced durability, puncture resistance, and temperature tolerance. Installation may involve torches, heat welds, or cold-applied adhesives, depending on the product and local codes.
Self-Adhering Roll Roofing
Self-adhering roll roofing uses a pressure-sensitive adhesive on the underside, protected by a release film. This type is prized for easy installation, minimal weather dependence, and strong sealing against water infiltration. It’s often used on flat or low-slope roofs and areas with limited access to traditional roofing equipment. Expect higher material cost but faster, cleaner installation.
When To Use Roll Roofing Shingle
Roll roofing shingle is most appropriate in specific scenarios. It provides a cost-effective solution for shed, garage, or extension roofs, especially where a temporary or semi-permanent cover is needed. It is also suitable for low-slope residential roofs, carports, and porches where the roof deck has minimal pitch and drainage is manageable. Roll roofing can serve as a quick fix after storm damage or during a home renovation when project timelines require rapid weatherproofing. However, for steep, heavily trafficked, or long-term residential roofing, traditional asphalt shingles or metal roofing may offer superior durability and warranty terms.
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Installation Basics And Considerations
Proper installation is essential to performance and longevity. The process typically includes surface preparation, felt or membrane application, and sealing at seams. For asphalt and modified-bitumen rolls, fasteners or asphalt-compatible adhesives secure the material, with attention paid to seam laps and in-coverage patterns to minimize water intrusion. Self-adhering products require careful surface cleaning and the removal of release film as the sheet is pressed into place.
- Surface Preparation: The roof deck should be clean, dry, and structurally sound. Repair any damaged plywood or sheathing before roll installation.
- Underlayment: Many roll roofing products require or benefit from a separate underlayment layer to improve puncture resistance and insulation.
- Ventilation and Drainage: Ensure proper drainage and ventilation to prevent moisture buildup and prolong roof life.
- Seams And Edges: Overlap seams according to product guidelines and seal or fasten edges securely to resist wind uplift.
Pros And Cons
| Aspect | Roll Roofing Shingle | Traditional Shingles |
|---|---|---|
| Cost | Lower material cost, cheaper upfront | Higher material cost, but longer lifespan |
| Install Speed | Faster for small areas or retrofits | Slower, requires more labor and precision |
| Durability | Good for low-slope, moderate conditions; more frequent replacement on extreme climates | Higher durability over time with proper installation |
| Maintenance | Inspect and reseal as needed; easier to repair in patches | Lower maintenance but repairs can be more involved |
Buying Guide And Costs
Prices vary by material type, thickness, and area coverage. Asphalt roll roofing generally costs less per square foot than modified bitumen or self-adhering options. Homeowners should calculate the roof area in squares (1 square equals 100 square feet) and add 5-10% for waste. Typical costs include:
- Material: Roll roofing sheets or rolls, with or without self-adhesive backing
- Underlayment and fasteners: Nails or staples, roofing nails, and compatible adhesives
- Tools and safety: Roof underlayment knife, utility knife, measuring tape, gloves, harnesses for safety
Factors that influence cost and performance include climate, roof pitch, size, and whether the project will be a DIY install or contracted. In areas with severe weather, higher-quality roll roofing or full shingle systems may offer better long-term value despite higher upfront costs.
Maintenance And Replacement
Routine maintenance extends the life of roll roofing. Inspect for edge lifting, seam separation, tears, or blistering after heavy storms or temperature fluctuations. Promptly address any issues to prevent water intrusion and roof decking damage. Replacement should be considered when multiple sections show wear, or if ponding water remains after rainfall. Periodic cleaning to remove debris helps maintain seal integrity and prevent moisture buildup.
Installation Quick Reference
- Measure and plan coverage, including waste allowances.
- Prepare the roof deck and apply any required underlayment.
- Position roll roofing, align seams, and secure with appropriate fasteners or adhesive per product guidelines.
- Seal edges, corners, and penetrations; inspect for air pockets or lifted edges.
- Schedule periodic inspections after weather events and perform targeted repairs as needed.
Understanding the role of a roll of roofing shingle helps homeowners make informed decisions for low-slope projects. It offers a cost-effective, efficient option for certain structures and climates, while remaining a viable temporary or long-term solution depending on materials and installation quality. By selecting the appropriate type, following installation guidelines, and conducting regular maintenance, roll roofing can provide reliable protection and value for homeowners across the United States.