Asphalt Felt Roofing Underlayment #30 Heavy Duty Roll 2Sq

Looking for a #30 asphalt felt that covers 216 sq ft per roll? The 30 DIB 2 SQ delivers that size and packs 32 lb of mat. Its all‑in‑one roll includes ladders, flashing, and a 30‑day return, making it easy. GAP’s same coverage offers ASTM Type I compliance, but lacks fasteners. TARCO adds a durable gold‑lined Type II finish for tough climates. Each brand trades weight, width, and warranty differently. Want to compare details? You’ll discover which one fits your roof best.

Key Takeaways

• #30 heavy‑duty asphalt felt offers 216 sq ft per 36 × 72‑ft roll, suitable for moderately large roofing jobs.
• It meets ASTM D4869 Type I standards, is unperforated, and comes with 32‑lb weight plus included flashing and ladders.
• Each roll measures 7.3 × 36 × 7.3 in, providing dense, tear‑resistant layers that support heavy loads and resist wind-driven rain.
• Accessories are bundled, removing the need for additional fasteners, and a 30‑day voluntary return window ensures risk‑free installation.
• Manual installation with lapping and caulking is required; the 32‑lb weight and heavy‑duty design make it unsuitable for steep roof pitches.

30 DIB 2 SQ ROOF Felt

For anyone tackling a large residential or commercial roof—up to 216 sq ft per roll—the 30 DIB 2 sq Roof Felt is the go‑to choice. This TARCO INC product covers 216 sq ft per 36‑in. × 72‑ft. roll, giving you a single unperforated layer with an asphalt‑saturated 36‑in. organic mat. Your roll measures 7.3 in. × 36 in. × 7.3 in. and weighs 32 lb., so it’s easy to haul and lay. The package contains a single roll plus all required building supplies—no batteries needed. It even comes with the essential ladders and roof flashing, ensuring you have everything you need for seamless installation. MANUFACTURER warranty backs it, and a voluntary 30‑day return remains available under normal conditions.

Best For: Residential and small‑commercial roofers who need a single, high‑coverage layer of unperforated felt with all essential accessories included for a quick, warranty‑backed installation.

Pros:

• One roll covers 216 sq ft, maximizing material efficiency.
• Comes pre‑loaded with ladders, flashing, and all required building supplies—no extra purchases needed.
• Manufacturer warranty and optional 30‑day return provide risk‑free confidence.

Cons:

• 32 lb roll can be cumbersome for solo installers or smaller crews.
• Manual labor and handling are required; no power‑driven installation options included.
• Scope of included accessories may not cover every specialty need (e.g., special fasteners for unconventional roof shapes).

GAP Roofing Black 216 sq. ft. #30 Roofing Felt

If you need an underlayment for asphalt shingles, the GAP #30 offers 32‑lb, 216‑sq‑ft coverage that resists water intrusion. You’ll find it’s a GAP4869‑30C roll, meeting ASTM D4869 Type 1 standards. The organic felt core, saturated with asphalt, delivers a sturdy base for your shingles. It weighs 32 lb and measures 7 × 7.25 × 39.5 in, with a 36‑inch width that stacks easily. Packaged as a single roll, it ships directly from GAP Roofing’s U.S. facility. Amazon provides a 30‑day return guarantee, and the manufacturer covers warranty queries. This product suits residential and commercial jobs, giving reliable protection and easy handling through its ideal density.

Best For: residential roofers and DIY homeowners installing asphalt shingles who need a durable, water‑resistant underlayment that meets ASTM D4869 Type 1 standards.

Pros:

• Covers 216 sq ft per roll, giving efficient coverage for small to medium projects.
• 32‑lb weight and 36‑inch width provide a stable, easy‑to‑handle base for shingles.
• ASTM D4869 Type 1 certified organic felt core saturated with asphalt delivers reliable moisture protection.

Cons:

• Single‑roll packaging may be restrictive for very large roofing jobs without additional rolls.
• No included adhesive or fastening instructions; requires separate fasteners.
• While Amazon offers a 30‑day return guarantee, warranty details must be requested directly from the manufacturer.

TARCO 30 ASTM D-226 DADE CNTY 30LB D226 Asphalt Felt

When you need quick, reliable protection, TARCO 30 delivers a durable, gold‑lined asphalt felt that meets ASTM D‑226 standards. Its 55‑lb roll measures 36 in. × 72 ft., covering 216 sq. ft. and packing a 10 in. × 10 in. × 36 in. core. Made in China, the product is Dade County‑approved and type II gold‑lined, giving extra weather resistance. Packaged single, it ships with tubing, faucets, and accessories—no batteries needed. You can order online, find warranty details there, and enjoy a 30‑day voluntary return if satisfied. With its straightforward cut‑and‑lay process, you’ll install this felt quickly and confidently. TARCO 30 is the go‑to option for any roofing job needing fast, reliable underlayment.

Best For: roofing crews and DIY roofers who need a quick‑install, ASTM‑certified underlayment for durable protection.

Pros:

• Heavy‑weight 55‑lb roll gives excellent durability and wind resistance.
• Gold‑lined type II construction ensures superior weatherproofing.
• Simple cut‑and‑lay design speeds up installation and reduces labor time.

Cons:

• The 55‑lb roll is bulkier to handle, which can strain workers.
• Packaging a single roll may increase unit cost for large projects.
• No batteries supplied, so any electrical accessories need to be purchased separately.

DuPont Roof Protector Roofing Underlayment Roll – 42″ x 286′

The DuPont Roof Protector offers superior tear resistance, making it the best choice for steep‑slope commercial roofs.

You’ll find it’s a 42‑inch wide, 286‑foot long roll that covers ten squares—so you need fewer sheets. The layers stack high‑grip top, water‑blocking laminate, woven polypropylene, and slip‑resistant finish, giving you a strong, tear‑proof barrier below any asphalt or metal deck. Its light 19‑lb weight keeps handling easy while its high strength‑to‑weight ratio cuts labor and waste. With thermal stability that endures harsh climates, the product comes with a DuPont warranty and a 30‑day Amazon return that makes installation risk‑free complete guarantee.

Best For: commercial roofers installing new or replacement asphalt or metal sloping roofs that demand a durable, tear‑resistant secondary barrier.

Pros:

• Superior tear resistance for long‑lasting protection.
• High strength‑to‑weight ratio reduces handling effort and labor costs.
• Thermal stability keeps performance consistent in harsh climates.

Cons:

• Designed only for steep‑slope roofs, limiting use on low‑angle roofs.
• The 42‑inch width still necessitates multiple seams on large roofs.
• Requires careful installation to prevent fastener‑related tearing.

30RF Standard Roofing Felt

Designers turn to 30RF for maximum protection on demanding roofs. You’ll find the 30RF standard roofing felt, part number 414‑0, in a 9×9×37 in. roll that weighs 36 lb and comes in a sleek black finish. This felt is tailored for underlaying sloped coverings—whether you’re installing asphalt shingles, wood shakes, or tiles. Its organic fibers are saturated with asphalt, giving it a uniform, flexible feel that resists tearing. It’s double the thickness of the 15RF model, so you get extra durability without extra weight. Plus, it meets ASTM 4869 Type I, so you know it passes the strictest durability and performance tests today anytime.

Best For: Roofing contractors and DIY homeowners tackling new or reroofing projects on sloped roofs who need a durable, water‑resistant underlay that meets strict ASTM Type I standards.

Pros:

• Durable double thickness provides extra resistance to tearing and wear.
• Meets ASTM 4869 Type I, ensuring compliance with the highest performance and longevity tests.
• Versatile underlay for asphalt shingles, wood shakes, tiles, and other sloped roof coverings.

Cons:

• Heavier than thinner felt options, which may make handling and installation more labor‑intensive.
• Black color can reduce curb appeal in certain architectural styles.
• Higher cost compared to entry‑level, single‑thickness felt products.

Titanium PSU30 Peel & Stick Roof Underlayment

Looking for protection on steep roofs, you’ll find the Titanium PSU30 delivers a self‑sealing lap system that won’t budge. You’ll benefit from its 45‑mil thickness and 72×36 inch roll, giving you a 2‑sq unit that runs 40 lb. across plywood, OSB, concrete, or masonry—no primer needed above 40 °F on wood. Its rubberized asphalt base with a synthetic polymer surface stays flat, resists mold, and handles temperatures from ‑40 °F to 240 °F. The material meets Class A fire, Class 4 hail, ASTM D1970, and offers a 6‑month UV rating. Walk on it, press firmly, cover within 180 days, and you’re set with confidence for years.

Best For: high‑slope residential or commercial roofs that face ice damming and wind‑driven rain, needing a self‑sealing, ultra‑durable peel‑and‑stick underlayment without the need for primers on warm wood.

Pros:

• Self‑sealing lap system that remains firm even on colder under‑layers.
• 45‑mil thickness, 6‑month UV rating, and Class A fire rating for durable performance.
• No primer needed on wood above 40 °F, simplifying installation time and labor.

Cons:

• Must be covered within 180 days or it will need replacement at that time.
• When wood is below 40 °F primer is required, adding an extra step and cost.
• The 45‑mil thickness can be heavy and may require extra support for very large surface areas.

Factors to Consider When Choosing Asphalt Felt Roofing Underlayment #30 Heavy Duty Roll 2 Squares

When you choose the #30 Heavy‑Duty Roll 2 Squares, start by weighing its weight and thickness—this tells you how easy it is to handle and how robust it will be over time. Make sure the warranty coverage aligns with your expectations and that the underlayment will cleanly fit with whatever roof system you’re using. Finally, check the material composition and weather‑resistance features to guarantee it can stand up to the local climate.

Weight and Thickness

The choice of asphalt felt hinges on its weight and thickness. You’ll find a standard 30‑dollar‑weight roll at 32 lb for 216 ft², giving you about 0.15 lb per square foot. Heavier options can jump to 55 lb, offering extra resilience. Thickness ranges from 30 mil to 45 mil; a 45 mil roll weighs roughly 48 lb on a 72‑by‑36‑inch sheet. The added 16 lb gives you better cushioning and tear resistance, but it also boosts handling demands by about 20 lb per roll compared with lighter, thinner counterparts. If you’re installing large roofs, weigh the extra protection against the heft you’ll need to lift and secure during work. This balance protects against peeling, blistering, and costly leaks, giving you peace of mind without compromising ease of installation for every roof size and lasts forever. Extends protection across seasons.

Warranty Coverage

Your warranty can protect you as much as the material’s heft, so it’s worth checking the terms before you break the seal. A common #30 underlayment furnishes a 5‑to 10‑year cover for manufacturing defects, but you should confirm the exact span with the maker today. Claims usually demand proof of proper installation—documented prep, slope, and fastening—otherwise the warranty sidelines you. Many brands also give a 30‑day return window for unused rolls, though that window closes before weather damage kicks in. Damage from bad installation, wrong fasteners, or unapproved chemicals is typically excluded. Filing a claim means notifying the manufacturer in writing, sending back the batch for inspection, and you may shoulder shipping unless a defect is confirmed. Always keep the paperwork handy, your records.

Installation Compatibility

Because the asphalt felt’s dimensions match common rafter spacings, the 36‑inch width and 72‑foot length let you cover two full squares without intermediate cuts, cutting labor and seam frequency. By sliding the roll directly onto your deck, you avoid the need for extra primers or base coatings. The 45‑mil thickness and 36‑inch width satisfy ASTM D‑1970 deck‑membrane specifications, so you can install on pitched roofs as mild as 2:12. The self‑adhesive side grips both wood and metal decks at temperatures above 55 °F, giving you the flexibility to mount under fascia or slatted panels. Fasteners spaced roughly 16 in. through up to ¾‑inch plywood or OSB penetrate without tearing, ensuring a solid securement. All these features let you finish the job faster and with fewer structural concerns.

Weather Resistance

Since the 30‑lb. density of this roll builds a thick barrier, you’ll find it holds back water during extended rain or storm events common in coastal or monsoon regions. Saturated organic fibers form a waterproof layer, letting the material endure extreme temperature swings—from below‑freezing nights to scorching noon—without losing integrity. The 2‑square layout delivers a continuous sheet that thwarts wind‑borne debris and cuts wear in high‑wind zones. ASTM certification guarantees the roll meets strict moisture‑barrier thresholds, curbing air leakage and stopping condensation under heavy snowfall or hail. Its 30‑lb. density also delivers thermal stability, shielding edges from blistering under intense sun and preventing delamination during repeated freeze‑thaw cycles. Overall, these features give you a resilient roof that stays watertight and structurally sound each year.

Material Composition

A roll of #30 asphalt felt lands as the backbone of your roof. You’ll see its core: an organic fiber mat—cotton, jute, or cotton‑lignin blends—saturated with hot bitumen to keep water out while flexing under deck contours. The mat’s 5‑10 mil thickness balances toughness with ease of handling. Laminated atop is a polypropylene or polyester scrim that boosts tensile strength, slows tear spread, and stabilizes dimensions. The binder, an ASTM D4869 Type I asphalt mortar, delivers 30 lb‑asphalt toughness that endures −40 °F to 240 °F temperature swings. Standard rolls run 36 in. wide by 72 ft long, yielding 216 sq ft each and built with a 5‑6 safety factor to resist wind, hail, and UV. By choosing this felt, you guarantee a durable barrier that protects your investment for decades.

Frequently Asked Questions

Can Asphalt Felt Be Applied Directly Over Existing Shingles?

Yes, you can apply asphalt felt directly over existing shingles, as long as you’re following the manufacturer’s guidelines and local building codes. First, inspect the shingles for damage—if they’re still in good shape, the felt serves as a weather-resistant layer. Keep the slope intact, seal all penetrations, and overlap the edges. Remember, adding a second layer will increase insulation and extend your roof’s life for better performance and longevity everywhere too.

What Is the Typical Lifespan of a #30 Heavy‑Duty Roll?

It typically lasts about 20 years. Did you know that 80 % of commercial roofs use #30 felt because of its durability? You’ll find that this material resists cracks and maintains integrity even after severe hail, giving you two decades of protection. After that, replace it to keep your roof safe. So, expect roughly twenty years before you need a new roll, such consistency helps homeowners avoid unexpected repairs and saves thousands.

Does #30 Underlayment Protect Against Hail Damage?

Yes, #30 underlayment helps guard against hail damage, but it isn’t a substitute for proper roofing. Its thicker weave offers better impact resistance, and the additional coating shields your roof deck. Still, you’ll need high‑impact shingles or a metal roof to fully defend against large hailstones. You’ll also protect your investment by checking for cracks, wear, and maintaining adequate ventilation. During colder months you should inspect for any visible damage.

How Does Temperature Affect Installation of #30 Underlayment?

Cold temperatures make #30 underlayment stiff, so you’ll want to wait until it’s at least 50°F. When it’s too cold, the fabric resists cutting and seams may pull apart. Warm, dry weather keeps the roll pliable so you can lay it smoothly, tuck edges neatly, and apply adhesive or nail without crinkling. Avoid extreme heat, which can warp the fibers. By monitoring the temperature, you’ll guarantee tackiness and durable roof.

Is Recycling Possible for Used #30 Roofing Felt?

Yes, you can recycle used #30 roofing felt. Most scrap‑treatment plants accept it, but you should first remove any insulation or adhesive. Then, shred the material into small pieces so it can be processed into new composite products or recovered as fiber. Municipal recycling programs often reject it, so check local guidelines. Proper disposal keeps landfill space low and supports a circular supply chain, for you, the planet, and projects.

Conclusion

You’ll find your roof transformed into a fortress of fire‑proof, wind‑tamed steel‑grade armor—because that #30 heavy‑duty roll is thicker than an elephant’s hide and wilder than a hurricane’s roar. Imagine a sea of black felt, each sheet a colossal shield, holding back rain like a wall of invisible boulders. With this, your roof becomes an unstoppable, glow‑bright cathedral of resilience, sailing safely above any tempest’s tail for years, under sky’s hottest blaze, all the way.