Choosing the right roofing felt and underlayment improves protection against moisture, UV exposure, and weather extremes. The products below highlight synthetic and self-adhesive options designed to outperform traditional felt, offering stronger construction, easier installation, and extended durability for a variety of roofing styles including asphalt shingles, metal, and cedar shakes. The selections focus on performance, coverage, and practical installation benefits.
| Product | Brand | Notes |
|---|---|---|
| INTERWRAP, Roofing Felt Repl 42inx286ft | INTERWRAP | Synthetic replacement with greater strength and coverage, meets ASTM standards |
| Self-Adhesive Sheds Roofing Felt, 1.6×3.3ft | SQQEZ | Self-adhesive underlayment for quick, sealant-backed protection |
| Atlas Summit 60 Synthetic Felt | Atlas | Flatter lay and UV exposure up to 60 days, water resistant |
| (500 Pack) Round Plastic Cap Nails | One Stop Outdoor | Cap nails and fasteners for roofing felt and tar paper |
| (250 Pack) Round Plastic Cap Nails | One Stop Outdoor | Slim, flexible head design for easier sealing |
INTERWRAP Roofing Felt Repl 42inx286ft
INTERWRAP’s synthetic replacement for traditional #15 or #30 oil-saturated felt targets steep-slope roofs and multiple substrates, including asphalt shingles, synthetic shingles, residential metal, and cedar shakes. The roll is designed to deliver higher strength—reportedly 12 times stronger than #30 felt—while offering improved coverage with 8 more squares per roll. It lays flatter with less wrinkling and resists mold due to its synthetic construction, making it less prone to water absorption. The roll features UV protection and provides a wider, lighter option for faster installation. The product meets or exceeds ASTM D226 Types I & II and D4689 Types II & IV, ensuring broad performance compliance.
Self-Adhesive Sheds Roofing Felt
This self-adhesive roof underlayment is designed for versatile waterproofing across roof types and surfaces, including leaks and cracks. It can be applied quickly by peeling away the protective film and pressing the membrane into place, offering fast sealing and durable adhesion in both hot and cold climates. The product emphasizes resistance to heat, cold, and water, with a robust aluminum layer contributing to weather resistance and fire resistance. Suitable for a wide range of applications—from roof repairs to balcony waterproofing—this underlayment is built to maintain a long service life and seal integrity under varied conditions.
Atlas Summit 60 Synthetic Felt
Atlas Summit 60 Synthetic Felt is designed to lay flatter and reduce air pockets compared with traditional felts. It provides up to 60 days of UV exposure and is water resistant, which supports longer-term protection during construction and early exposure periods. The synthetic composition enhances durability and stability on sloped roofs, supporting compatibility with a variety of roof coverings while delivering reliable moisture protection and simple installation.
Round Plastic Cap Nails (500 Pack)
These tar paper nails come with round plastic cap heads designed for quick, secure fastening of roofing felt, house wrap, foam board, and related underlayment applications. The caps are made from durable plastic and paired with electro-galvanized nails to resist rust and corrosion, extending their service life. The flexible cap head helps seal against water intrusion and simplifies installation, making them a practical accessory for felt and underlayment projects on various roof types.
Round Plastic Cap Nails (250 Pack)
The 250-pack variant mirrors the design and utility of the 500-pack option, offering a convenient solution for securing roofing felt and related materials. The round plastic caps provide a watertight seal by conforming to surfaces, while the electro-galvanized nails resist corrosion. This size is suitable for smaller projects or multifaceted installations where precise fastening is required without sacrificing durability.
100 Pack – Round Plastic Cap Nail 1 Inch
This 100-pack option provides a compact, reliable solution for roofing felt and related materials. The round plastic caps with a flexible design help protect against water intrusion and simplify installation, particularly on smaller roofing projects or repairs. The nails themselves use an electro-galvanized finish to resist rust and corrosion, supporting longer-term performance in varied climates.
500 Pack – Plastic Cap Washers
These plastic cap washers are designed to work with nails or screws, providing a practical option for roofing felt, tar paper, and related fastener needs. The lids help distribute pressure and reduce cap intrusion, contributing to a more uniform seal around fasteners. The product’s versatility makes it useful for a broader range of roofing assemblies, including house wrap and insulation film installations.
Buying Guide
Key considerations when selecting felt paper and underlayment for roofing include material composition, UV exposure tolerance, water resistance, and ease of installation. Synthetic felts generally offer higher tear strength, better mold resistance, and flatter application compared with traditional oil-saturated felts. Self-adhesive underlayments provide quick, water-tight seals without separate tapes or adhesives, but may have different temperature performance and thickness requirements. For steep-slope roofs, a wider and lighter roll can reduce labor time and improve lap coverage, while UV exposure duration informs when temporary exposure is possible before shingle installation. Compatibility with roof type (asphalt shingles, metal, cedar), local climate, and building codes should guide selection. Fastening accessories like plastic cap nails and washers influence long-term durability by improving seal integrity and reducing moisture ingress around fasteners. Consider balanced choices between upfront cost, installation speed, and anticipated roof life when forming a shopping list.
Selection strategy by roof type and climate:
– Steep-slope asphalt or cedar roofs: Synthetic underlayments with UV protection and high strength help prevent wrinkling and moisture intrusion.
– Metal roofs: Self-adhesive and moisture-resistant membranes provide robust protection against fastener leaks and wind-driven water.
– Cold climates: Materials with excellent cold resistance and flexible adhesion ensure reliable performance at low temperatures.
– DIY or professional installation: Lighter, wider rolls and user-friendly self-adhesive options reduce labor time and error potential.
Performance vs. cost:synthetic felts and self-adhesive membranes may have higher upfront costs but can deliver longer service life, easier handling, and reduced on-site labor, which often improves total project value. Always review ASTM or other relevant standards to ensure compatibility with your roofing system and local regulations.