Tools & Home Improvement

The Best Cap Nails

This post contains affiliate links. As an Amazon Associate we earn from qualifying purchases.

Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

Cap nails are essential fasteners for various projects, from roofing and siding to weatherproofing and insulation. Selecting the right cap nail ensures a secure, long-lasting hold and prevents material damage. This guide will help you navigate the key features to consider when making your purchase.

No. 1
Grip-Rite Plastic Cap Nails - Secure Roofing Underlayments and Housewraps - Electro-Galvanized...
  • PLASTIC CAP NAILS: Grip-Rite plastic cap nails provide strong holding power with a wide round cap and ringed shank that resists pull-out, keeping materials securely fastened.
  • DURABLE: Made from steel for durability and strength. Electro-galvanized against rust and corrosion, ideal for use in outdoor applications.
  • EASY INSTALLATION: A sharp point and smooth driving action allow the nail to pierce felt and underlayment cleanly without tearing, making installation quick and consistent.
  • VERSATILE ROOFING TOOLS: Ideal for securing synthetic underlayment, housewrap, foam board, rigid insulation, plastic sheeting, tarps, and more. Trusted by professionals and homeowners for a wide range of exterior projects.
  • WE BUILD AMERICA: Since 1975, Grip-Rite has been your trusted partner. We deliver innovative and reliable solutions for the task at hand, day one through the lifetime of a project.
No. 2
Plastic-Cap-Roofing-Nails-Round-Electro-Galvanized Nails 1 1/4 Inch,100 PCS
  • 【Roofing Nails 1.25" Materials】1.25" Plastic Cap Roofing Nails are made of high-quality materials, plastic cap ensuring excellent wear resistance and The plastic caps sit completely flat against the surface, flush finish that won't protrude.Nails...
  • 【Plastic Cap Roofing Nails Creative Design】The round cap forms a secure seal that blocks water intrusion, making installation quick and hassle-free.These Roofing nails with washers firmly fasten insulation boards and roofing felt, reducing thermal...
  • 【Versatile Roofing Solution】Round Plastic Cap Nail Designed for broad compatibility with hardware, tubing, and multiple roofing tasks, these nails simplify material selection for various fastening applications. Trusted for anchoring house wrap...
  • 【Unshakable in Storms and Cold】Round Plastic Cap Nail built to defy the elements. The ring shank provides exceptional grip, secure seal created by these heavy-duty cap nails keeps insulation boards and house wrap firmly anchored, maintaining optimal...
  • 【Backed by Confidence】Your satisfaction is our priority. This product is covered by a reliable, long-term warranty, ensuring protection for your investment. We stand firmly behind the quality and durability of every nail
No. 3
Grip-Rite Plastic Cap Nails - Secure Roofing Underlayments and Housewraps - Electro-Galvanized...
  • PLASTIC CAP NAILS: Grip-Rite plastic cap nails provide strong holding power with a wide round cap and ringed shank that resists pull-out, keeping materials securely fastened.
  • DURABLE: Made from steel for durability and strength. Electro-galvanized against rust and corrosion, ideal for use in outdoor applications.
  • EASY INSTALLATION: A sharp point and smooth driving action allow the nail to pierce felt and underlayment cleanly without tearing, making installation quick and consistent.
  • VERSATILE ROOFING TOOLS: Ideal for securing synthetic underlayment, housewrap, foam board, rigid insulation, plastic sheeting, tarps, and more. Trusted by professionals and homeowners for a wide range of exterior projects.
  • WE BUILD AMERICA: Since 1975, Grip-Rite has been your trusted partner. We deliver innovative and reliable solutions for the task at hand, day one through the lifetime of a project.
No. 4
Grip-Rite Plastic Cap Nails - Secure Roofing Underlayments and Housewraps - Electro-Galvanized...
  • PLASTIC CAP NAILS: Grip-Rite plastic cap nails provide strong holding power with a wide round cap and ringed shank that resists pull-out, keeping materials securely fastened.
  • DURABLE: Made from steel for durability and strength. Electro-galvanized against rust and corrosion, ideal for use in outdoor applications.
  • EASY INSTALLATION: A sharp point and smooth driving action allow the nail to pierce felt and underlayment cleanly without tearing, making installation quick and consistent.
  • VERSATILE ROOFING TOOLS: Ideal for securing synthetic underlayment, housewrap, foam board, rigid insulation, plastic sheeting, tarps, and more. Trusted by professionals and homeowners for a wide range of exterior projects.
  • WE BUILD AMERICA: Since 1975, Grip-Rite has been your trusted partner. We deliver innovative and reliable solutions for the task at hand, day one through the lifetime of a project.
No. 5
100 Pack - Round Plastic Cap Nail 1 Inch Roofing Nails Galvanized Tar Paper Nails for House Wrap Fastening...
  • Quality Material: the nail caps are made of quality plastic, reliable and sturdy, not easy to break or deform; The nails are electro galvanized treatment, not easy to rust or corrode, providing you with a long use time
  • Creative Design: the round plastic caps adopt a flexible round head that conforms to surfaces, making it harder for water to get under the cap, the integrated design saving you time and energy, convenient for you to use
  • Where to Apply: the tar paper nails are widely applicable, suitable for securing roofing felt, sheathing, anchoring house wrap, fastening foam board, bringing you much convenience when using
  • Sufficient Quantity: you will receive your choice of either 100, 250, 500, 2000 or 4000 pieces of plastic cap nails, ample amount to satisfy your daily use and replacement demands, you can also share with your friend
  • Used for attaching underlayment, tar paper, felt paper, insulation board, and housewrap. Ring shank provides enhanced holding power. Plastic cap reduces pull-through and distributes holding power.
No. 6
250 Pack - 3 Inch - Round Plastic Cap Nail Roofing Nails Galvanized Tar Paper Nails for House Wrap Fastening...
  • Quality Material: the nail caps are made of quality plastic, reliable and sturdy, not easy to break or bend; The nails are electro galvanized treatment, not easy to rust or corrode, providing you with a long lifetime.
  • Design: the round plastic caps adopt a flexible round head that conforms to surfaces, making it harder for water to get under the cap, the integrated design saving you time and energy, convenient for you to use
  • Apply: the tar paper nails are widely applicable, suitable for securing roofing felt, sheathing, anchoring house wrap, fastening foam board, bringing you much convenience when using
  • Quantity: you will receive your choice of either 50, 100, 250, 500 or 2000 pieces of plastic cap nails, ample amount to satisfy your daily use and replacement demands, you can also share with your friend
  • USE: for attaching underlayment, tar paper, felt paper, insulation board, and housewrap. Ring shank provides enhanced holding power. Plastic cap reduces pull-through and distributes holding power.
No. 7
Roofing-Nails-Electro-Galvanized Nails 1 1/4 Inch with Plastic Cap, 300 PCS
  • 【Roofing Nails 1.25" Materials】1.25" Plastic Cap Roofing Nails are made of high-quality materials, plastic cap ensuring excellent wear resistance and The plastic caps sit completely flat against the surface, flush finish that won't protrude.Nails...
  • 【Plastic Cap Roofing Nails Creative Design】The round cap forms a secure seal that blocks water intrusion, making installation quick and hassle-free.These Roofing nails with washers firmly fasten insulation boards and roofing felt, reducing thermal...
  • 【Versatile Roofing Solution】Round Plastic Cap Nail Designed for broad compatibility with hardware, tubing, and multiple roofing tasks, these nails simplify material selection for various fastening applications. Trusted for anchoring house wrap...
  • 【Unshakable in Storms and Cold】Round Plastic Cap Nail built to defy the elements. The ring shank provides exceptional grip, secure seal created by these heavy-duty cap nails keeps insulation boards and house wrap firmly anchored, maintaining optimal...
  • 【Backed by Confidence】Your satisfaction is our priority. This product is covered by a reliable, long-term warranty, ensuring protection for your investment. We stand firmly behind the quality and durability of every nail.
SaleNo. 8
STINGER 0136260 NailPac® Cap Nails - 1" Electro Galvanized Nails with 1" Plastic Collated Caps (0136260) for...
  • SUPERIOR HOLDING POWER - 1” (25mm) plastic collated caps and 1”x.083” (25mmx2.1mm) full round head ring shank nails holds underlayment securely
  • EASY RELOADS - Contains 10 reels of 200 collated plastic caps and 10 coils of 200 nails which covers 25 square
  • WHERE TO USE - Use corrosion-resistant electro galvanized nails in areas more than 3,000 ft (914m) from saltwater
  • MEETS ASTM REQUIREMENTS - Cap nails meet ASTM F1667 requirements and exceed ASTM D3161 and D7869-17 for wind and UV resistance
  • BEST PRACTICE UNDERLAYMENT FASTENER - Use exclusively with STINGER CN100B for the best practice installation of roofing underlayment
No. 9
Moxweyeni 2 Pounds 1-1/2'' Metal Cap Nail Bulk Round Fluted Masonry Roofing Insulation Nail Heavy Duty Cement...
  • 2Lb Bulk Pack for Pros and DIY Users: the ample quantity of insulation nail (approximately 2 pounds per bag/Approx.100pcs) meets the needs of large area construction or multi point fixing; The standardized packaging facilitates transportation, categorized...
  • 45 Steel Construction for Durability: forged from 45 steel, tempered and hardened, with high hardness and strong impact resistance; It is not easy to bend or break when nailed into concrete or masonry, and is more durable than ordinary cement nails...
  • Ring Fluted Shank Prevents Loosening: fluted-shaped thread structure tightly grips concrete, brick, and block; These roof nails stay fixed under vibration or stress, making it particularly suitable for construction scenarios with high stability...
  • Precise 1-1/2 Inch Length: each cap nails is about 1-1/2 inch long and 0.15 inch in diameter, with standardized dimensions; This ensures effective penetration of materials such as insulation boards, waterproof membranes, and flashing, without damaging the...
  • Multi-purpose for Upholstery DIY Fixing: besides architectural applications, it can also be applied to secure thick fabrics, leather, felt, and other decorative materials; Commonly apply for DIY projects such as securing sofa upholstery and cushions, this...

Last update on 2026-09-01 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Cap Nails

Comparison Tips

When comparing options, pay close attention to the nail's gauge (thickness of the shank), head diameter, and material coating. A thicker gauge offers more strength. A larger head diameter is beneficial for softer materials. For outdoor or damp environments, prioritize galvanized or stainless steel. Check reviews for insights into ease of driving and holding power in real-world scenarios.

Frequently Asked Questions

What is the primary purpose of a cap nail?
The primary purpose of a cap nail is to fasten thin, flexible materials like roofing felt, house wrap, or insulation boards to a solid substrate. The wide head prevents the fastener from tearing through these materials.
Are cap nails suitable for structural applications?
No, cap nails are generally not designed for structural load-bearing applications. Their wide heads are optimized for holding down membranes and sheathing, not for joining structural components.
What is the difference between a roofing nail and a cap nail?
The terms are often used interchangeably. Both refer to nails with wide, flat heads designed to secure materials like roofing felt. 'Cap nail' is a more general term, while 'roofing nail' is specific to that application.
How do I choose the right length for my project?
Select a length that will pass through your material and penetrate the underlying substrate (like wood sheathing) by at least 1/2 to 3/4 inch. This ensures a secure anchor.
Can I use cap nails for vinyl siding?
While some vinyl siding installations might use similar fasteners, dedicated siding nails are often recommended. Cap nails can work for securing trim pieces or underlayment related to siding, but check the siding manufacturer's guidelines.
How many cap nails do I typically need for a standard roof?
The number of cap nails needed depends on the spacing requirements specified by the material manufacturer, typically around 4-6 inches apart along edges and seams. A general estimate for a standard roof can range from several hundred to a few thousand.