How Much Does a Roll of Roofing Felt Cost and What Affects Its Price
For homeowners, contractors, and DIY enthusiasts, understanding the cost of roofing felt is crucial when planning roofing projects. Roofing felt, also known as tar paper, serves as an essential underlayment in roofing systems, providing waterproofing and protecting the roof deck. This article explores the pricing factors, typical costs, types, and considerations to help buyers make informed decisions on roofing felt purchases.
| Factor | Cost Range | Impact on Price |
|---|---|---|
| Type of Felt (Organic vs. Synthetic) | $15 – $90 per roll | Synthetic felt is generally more expensive but offers better durability |
| Roll Size and Weight | 25 lb, 30 lb rolls common | Larger or heavier rolls cost more but cover more area |
| Brand and Quality | Varies widely | Premium brands and thicker felts typically cost more |
| Purchase Location | Local vs. Online pricing | Bulk buying or local availability influences price |
What Is Roofing Felt and Why Is It Important
Roofing felt is a protective underlayment made from fiberglass or organic materials saturated with asphalt. It is installed beneath shingles or other roofing materials to serve as a moisture barrier and shield the roof deck from water infiltration, ice dams, and wind-driven rain. Though less common than synthetic alternatives, traditional organic felt remains widely used due to its affordability and ease of installation.
The choice of roofing felt impacts the overall durability, waterproofing efficiency, and lifespan of a roofing system.
Types of Roofing Felt and Their Price Differences
The two primary categories of roofing felt are organic felt and synthetic underlayment. Each type has unique characteristics influencing its price:
- Organic Felt: Made from paper saturated with asphalt, it typically weighs 15 or 30 pounds per roll and is less expensive upfront. Prices range from $15 to $40 per roll, depending on thickness and quality. Organic felt is prone to tearing and absorbs moisture if exposed too long.
- Synthetic Felt: Manufactured from polypropylene or polyester fabrics coated with asphalt or polymers. This underlayment is more durable, lighter, resistant to tearing, and water-repellent. Prices are higher, ranging from $50 to $90 per roll, reflecting enhanced performance and longevity.
Typical Roll Sizes and Coverage Areas
Understanding roofing felt roll size is vital for accurate budgeting and estimation:
| Roll Weight | Dimensions | Coverage Area |
|---|---|---|
| 15 lb Organic Felt | 36″ x 144′ | Approximately 432 sq. ft. |
| 30 lb Organic Felt | 48″ x 144′ | Approximately 576 sq. ft. |
| Synthetic Felt | 48″ x 250′ (varies) | Approximately 1000 sq. ft. |
Generally, larger rolls cover more area and offer better value per square foot but come with a higher price.
Factors Influencing the Cost of a Roll of Roofing Felt
Several critical factors affect the price of roofing felt, including:
- Material Quality: Higher quality asphalt saturation or polymer coatings increase durability and price.
- Thickness and Weight: Heavier rolls (30 lb) cost more than lighter (15 lb) options, given their superior protection.
- Brand Reputation: Well-known manufacturers often charge premiums for reliability and performance warranties.
- Local Market Conditions: Regional availability and shipping can influence cost variations.
Price Comparison of Popular Roofing Felt Brands
Here is a price overview based on common brands available in the U.S. market:
| Brand | Type | Roll Weight | Approximate Cost (USD) |
|---|---|---|---|
| Owens Corning | Synthetic | 55 lb | $75 – $90 |
| GAF | Organic & Synthetic | 15 lb – 55 lb | $20 – $85 |
| CertainTeed | Synthetic | 45 lb | $65 – $85 |
| Henry | Organic | 30 lb | $25 – $40 |
Where to Buy Roofing Felt for the Best Price
Roofing felt can be purchased through multiple channels, with price and convenience varying:
- Local Hardware Stores: Home Depot, Lowe’s, and regional suppliers offer immediate availability and guidance, often with competitive prices.
- Roofing Supply Companies: Specialized suppliers may provide better bulk pricing for contractors purchasing large quantities.
- Online Retailers: E-commerce platforms offer a wide variety and sometimes discounts but may include shipping costs.
How to Calculate the Amount of Roofing Felt Needed
To estimate how many rolls to purchase, measure your roof area carefully and divide by the coverage area per roll. Always add a 10-15% overage to allow for waste and overlaps.
- Measure the total length and width of the roof sections.
- Calculate total square footage (Length × Width for each section, then add).
- Divide the total square footage by the square footage coverage of a single roll.
- Add extra for overlap and cuts.
Additional Costs to Consider Beyond the Roll Price
While the per-roll cost is important, consider these associated expenses:
- Installation Labor: Professional installation can cost $1.50 to $3 per square foot based on roof complexity.
- Fasteners and Tools: Nails, staples, or adhesive required to secure felt.
- Disposal: Removal of old roofing materials may incur additional fees.
Benefits of Choosing Higher Quality Synthetic Roofing Felt
Though synthetic roofing felt costs more upfront, it delivers significant advantages:
- Superior Water Resistance: Protects roof deck even during extreme weather.
- Lightweight and Tear Resistant: Easier to handle and install without damage.
- UV Protection: Better resistance if felt is exposed temporarily before final roofing.
- Longer Lifespan: Enhanced durability reduces replacement needs.
Environmental Considerations of Roofing Felt
Traditional organic felt is petroleum-based and less eco-friendly. Synthetic felt can also contain plastics but often lasts longer, reducing material waste. Buyers seeking greener options should consider recycled content products or newer bio-based underlayments offered by some manufacturers.