How Much Does a Roll of Roofing Felt Cost?
Choosing the right roofing materials is crucial for both the protection and longevity of a home. Roofing felt, often known as tar paper, is a common underlayment used beneath shingles to provide an additional waterproof layer. Knowing the cost of roofing felt helps homeowners and contractors budget effectively for roofing projects. Pricing varies based on material quality, size, brand, and application purpose.
| Type of Roofing Felt | Typical Roll Size | Average Cost per Roll |
|---|---|---|
| Organic Roofing Felt | 36 inches x 144 feet | $20 – $40 |
| Fiberglass Roofing Felt | 36 inches x 216 feet | $30 – $70 |
| Polymer-Modified Roofing Felt | Typically varies | $50 – $100+ |
Types of Roofing Felt and Their Cost Differences
Roofing felt comes in several varieties, each designed to suit specific installation requirements and budgets. The two primary types are organic felt and fiberglass felt. Organic felt is made from recycled paper saturated with asphalt, offering durability but is heavier and less fire-resistant.
Fiberglass felt, on the other hand, incorporates fiberglass mats making it lighter, more fire resistant, and generally more expensive. Some advanced polymer-modified felts provide superior waterproofing and durability, further increasing the cost.
Organic Roofing Felt
This traditional type tends to be the most affordable option, with rolls typically priced between $20 and $40. These rolls measure approximately 36 inches wide by 144 feet long, covering around 432 square feet. Organic felt is commonly used in residential projects but has been somewhat supplanted by fiberglass felt due to fire safety concerns.
Fiberglass Roofing Felt
Fiberglass roofing felt is lighter and stronger, with rolls often measuring 36 inches by 216 feet, covering 648 square feet. Prices typically range from $30 to $70 per roll. This type is favored for commercial roofing and modern residential roofs requiring better fire resistance.
Polymer-Modified Roofing Felt
Polymer-modified felts feature advanced materials for enhanced durability, making them more expensive. These specialized underlayments can cost anywhere from $50 to over $100 per roll. While not as common for every roofing project, they are chosen for high-end or severe weather installations.
Factors Affecting the Cost of Roofing Felt
- Material Quality: Higher-quality felts, such as fiberglass or polymer blends, command higher prices for improved protection and longevity.
- Roll Size and Coverage: Larger rolls cover more area, potentially lowering cost per square foot but increasing upfront expense.
- Brand Names: Established manufacturers may charge premiums based on reputation, warranties, and quality control.
- Thickness and Weight: Heavier felt often provides better protection but can increase material and labor costs.
- Local Market Prices: Regional demand, supply chain status, and shipping can influence prices.
Calculating How Much Roofing Felt You Need
To estimate the amount of roofing felt required, homeowners and contractors first need to calculate the roof’s total surface area. The formula is:
| Roof Length | x | Roof Width | = | Total Roof Area |
|---|
Coverage is usually listed on the packaging, commonly around 400 to 600 square feet per roll, depending on the type. It’s essential to factor in extra material for overlapping and wastage, typically adding around 10% to the total needed.
Comparing Roofing Felt Prices per Square Foot
| Felt Type | Cost per Roll | Coverage (square feet) | Approximate Cost per sq. ft. |
|---|---|---|---|
| Organic Felt | $20 – $40 | 400 – 450 | $0.05 – $0.10 |
| Fiberglass Felt | $30 – $70 | 600 – 700 | $0.05 – $0.12 |
| Polymer-Modified Felt | $50 – $100+ | Varies | $0.10 – $0.20+ |
Where to Buy Roofing Felt for the Best Prices
Various retailers offer roofing felt, including home improvement stores, roofing supply companies, and online marketplaces. Some of the popular options are:
- Home Depot and Lowe’s: Widely accessible with competitive pricing and bulk discounts.
- Local Roofing Suppliers: Often provide specialty products and personalized service, sometimes at better prices for bulk purchases.
- Online Retailers: Platforms like Amazon offer convenience and occasionally lower prices but check shipping costs carefully.
Additional Costs Related to Roofing Felt Installation
While the price of the roofing felt roll is important, installation expenses significantly impact a roofing project budget. These include:
- Labor: Professional installation costs vary but commonly range from $1 to $3 per square foot, depending on complexity.
- Fasteners and Tools: Nails, staples, and specialty adhesives may be needed.
- Disposal Fees: Old felt removal and disposal add to overall costs.
Why Choosing Quality Roofing Felt Matters
Roofing felt acts as the first defense against weather damage beneath shingles. Poor quality felt may tear, absorb moisture, and reduce the lifespan of the entire roof system. Investing in well-made felt can prevent costly repairs, improve fire resistance, and enhance waterproofing performance.