Best Tar Paper for Roofing: Top Fasteners and Caps for Secure Underlayment
Tar paper installations rely on sturdy fasteners that seal against moisture and resist corrosion. This guide highlights five top tar paper nails and related cap washers that pair with roofing felt, house wrap, and foam board. Each pick emphasizes durability, ease of use, and compatibility with standard 1-inch nails. Whether you’re a DIY homeowner or a professional, these caps improve weather sealing and reduce installation time. Below is a quick product summary table followed by in-depth reviews.
| Product | Brand | Pack Size | Key Benefit |
|---|---|---|---|
| Sandbaggy 1-Inch Plastic Cap Nails (300) | Sandbaggy | 300 | Ring shank for extra holding power |
| One Stop Outdoor 500 Pack Cap Nails | One Stop Outdoor | 500 | Electro-galvanized nails with flexible plastic caps |
| One Stop Outdoor 250 Pack Cap Nails | One Stop Outdoor | 250 | Water-conforming caps for quick installation |
| One Stop Outdoor 100 Pack Cap Nails | One Stop Outdoor | 100 | Compact option for smaller projects |
| One Stop Outdoor Plastic Cap Washers (500) | One Stop Outdoor | 500 | Great for securing nails and adding load distribution |
Sandbaggy 1-Inch Plastic Cap Nails (300)
The Sandbaggy nails feature a 1-inch wide plastic cap that increases holding strength when fastening materials to wood roofing underlayment, delivering a durable base for tar paper, felt, or foam board. The nails are electro-galvanized, helping resist rust and corrosion for longer-term performance in exposed environments. A ring-shank design further improves withdrawal resistance, locking into wood fibers for a secure install against wind and moisture. The integrated cap design sits flush after installation, reducing visibility and potential snag points under shingles.
- 1 inch wide plastic cap enhances grip and sealing
- Electro-galvanized nails resist rust
- Ring shank provides additional holding power
- Cap remains flush and non-visible under shingles
The product is versatile for securing roofing felt, house wrap, tar paper, and foam board. It’s designed to work with standard framing nails, offering a straightforward upgrade for weatherproofing projects. For long-term durability, this option emphasizes corrosion resistance and a cap design that minimizes water ingress around the fastener.
One Stop Outdoor 500 Pack Cap Nails
The 500-pack set from One Stop Outdoor features electro-galvanized nails paired with round plastic caps that conform to surfaces and help prevent water from seeping under caps. The integrated design offers time savings during installation, especially useful when fastening roofing felt, house wrap, and foam board. The plastic caps are designed to remain secure and not deform under pressure, supporting consistent performance across larger roofing jobs and renovations.
- Electro-galvanized nail finish improves durability
- Flexible round caps reduce water intrusion
- Integrated design speeds up installation
- Suitable for roofing felt, house wrap, and foam boards
Recommended for larger jobs where a high-volume supply of reliable caps is advantageous. The caps’ design helps maintain a smooth finish on the surface while reinforcing the hold on underlying materials, even in wet conditions.
One Stop Outdoor 250 Pack Cap Nails
This 250-pack option mirrors the core design of the larger sets, offering reliable plastic-capped nails for tar paper and underlayment projects. The round caps conform to surfaces to minimize water entry, while the electro-galvanized nails maintain resistance to rust and corrosion over time. The integrated cap design reduces the need for additional sealant or time-consuming adjustments, making it well-suited for homeowners tackling mid-sized roof or wall projects that involve felt, house wrap, or foam board.
- Plastic cap improves sealing and water resistance
- Corrosion-resistant electro-galvanized nails
- Round caps provide a flush finish
- Good option for medium-scale projects
Using these nails with tar paper or roofing felt can streamline installation while maintaining a durable hold across varied weather conditions.
One Stop Outdoor 100 Pack Cap Nails
The 100-pack cap nails provide a compact solution for small roofing or repair projects. The 1-inch round caps are designed to conform to surfaces and keep water from pooling around the head, while the electro-galvanized nails resist rust in humid climates. The integrated cap design supports faster installs and reduces the chance of misalignment during fastening, making it a practical choice for homeowners completing minor tar paper tasks or house wrap touch-ups.
- Compact pack for small jobs
- Simple, fast installation with integrated caps
- 1-inch caps for reliable coverage
- Rust-resistant nail body for durability
Ideal for quick repairs or targeted projects where a full-size nail supply isn’t necessary, yet reliability remains essential for performance.
One Stop Outdoor Plastic Cap Washers (Blue)
These blue plastic cap washers are designed to be used with nails or screws, expanding the versatility of tar paper and roofing projects. The caps create a larger bearing surface that helps distribute load and reduce pull-through, which is especially helpful when fastening roofing felt, tar paper, or insulation film. The caps’ round shape conforms to surfaces, helping to seal against moisture and contributing to a cleaner finish. They work well with a range of fasteners, simplifying on-site selection for installers.
- Large bearing surface for load distribution
- Works with nails or screws
- Blue caps provide visible seal and separation
- Suitable for roofing felt, tar paper, and insulation film
For projects requiring additional cap-based sealing while using fasteners beyond nails, these washers offer an adaptable solution that complements tar paper and underlayment work.
Buying Guide
When selecting tar paper fasteners, consider material durability, cap design, and the specific roofing or siding application. Galvanized nails resist rust in humid or coastal environments, while plastic caps help seal against moisture and reduce surface damage. Ring-shank nails can offer stronger withdrawal resistance, which matters for windy locations or heavier underlayment loads. Cap washers distribute pressure more evenly and can prevent pull-through when fastening through dense or thick layers. Think about project size: larger bundles save time on big jobs, while smaller packs fit repairs or trim work.
Intended use matters. For roofing felt, tar paper, or house wrap, caps should seal tightly around the head to minimize water infiltration. If wiring or light fixtures are present, consider whether caps also help hold cords or other materials in place, as some products advertise multi-use applications. For foam board and insulation, flush-fitting caps reduce project snags and ensure a neat, even surface beneath shingles or siding. Always verify compatibility with your chosen nail length and substrate to optimize performance.
Installation ease is another key factor. Integrated caps designed to stay with the fastener reduce handling steps and speed up work, particularly on larger roof or wall sections. For DIY projects, higher-quality caps paired with corrosion-resistant nails can reduce maintenance needs over time, even after weather exposure. Professional crews may prioritize ring-shank options for added holding power in high-wind regions. Lastly, availability and quantity impact project planning; having a reliable supplier with consistent stock minimizes downtime and ensures consistent results across multiple runs.