Nails with plastic washers, also called plastic cap nails, help secure roofing felt, tar paper, house wrap, and insulation board with a wider surface hold. The best choice depends on nail length, cap design, shank style, and how many fasteners a project needs. The 1 1/2-inch Grip-Rite option is best for buyers prioritizing a ringed shank, while the 1 1/4-inch LushPatio kit includes separate cap washers. The products below provide different lengths and quantities for common fastening tasks.
| Product | Length | Best For |
|---|---|---|
| LushPatio Plastic-Cap Roofing Nails | 1 1/4 inches | General roofing and wrap projects |
| One Stop Outdoor Round Plastic Cap Nails | 1 inch | Shorter fastening needs |
| Grip-Rite Plastic Cap Nails | 1 1/2 inches | Ring-shank holding power |
| LushPatio Nails and Cap Washers Kit | 1 1/4 inches | Buyers needing separate washers |
| BHTOP Plastic Cap Nails | 1 inch | A 200-piece package |
LushPatio 1 1/4-Inch Plastic-Cap Roofing Nails

These electro-galvanized nails come in a 100-piece package and have round plastic caps designed to sit flat against the surface. The listed uses include securing house wrap, tar paper, roofing felt, insulation, sheathing, and foam board. The product description also states that the cap helps limit water intrusion and that the coating resists rust.
Best for: Homeowners and DIYers who want a mid-length fastener for several underlayment or wrap applications. The broad listed use and flat cap make this a flexible option among the products here. Limitation: The package contains 100 nails, so it may not be enough for a larger job.
One Stop Outdoor 1-Inch Round Cap Nails

This 100-pack uses one-inch electro-galvanized nails with plastic caps. Its listed applications include roofing felt, sheathing, house wrap, and foam board. The product description says the flexible round caps conform to surfaces and are intended to make it harder for water to get beneath them. The integrated design is described as convenient for installation.
Best for: Buyers who need a shorter nail for materials such as house wrap or roofing felt and want a compact 100-count pack. Choose this if a one-inch length suits the materials and project requirements. Limitation: It is shorter than the 1 1/4- and 1 1/2-inch options, so check the required penetration depth before buying.
Grip-Rite 1 1/2-Inch Ring-Shank Cap Nails

Grip-Rite’s package contains 207 steel nails with wide plastic caps, electro-galvanized protection, and ringed shanks. The listing says the ringed shank resists pull-out and that the sharp point and smooth driving action are intended to pierce felt and underlayment without tearing. The product is described for securing roofing underlayments and house wraps in outdoor applications.
Best for: Buyers who prefer a longer nail and want a ring-shank design intended to resist pull-out. It also offers the largest stated count among the first three products. Limitation: At 1 1/2 inches, it is longer than the other listed nails, so confirm the length is appropriate for the materials and surface being fastened.
LushPatio Nails and Cap Washers DIY Kit

This kit includes 60 electro-galvanized, 1 1/4-inch ring-shank nails and 100 plastic cap washers. The listing describes the washers as one inch in diameter and says they are designed to fit the nails. It identifies roofing felt, tar paper, house wrap, insulation board, and underlayment as uses. The ring-shank design is described as providing grip, while the flat caps are intended to help block moisture.
Best for: DIYers who specifically want a package with separate nails and cap washers rather than only preassembled cap nails. The included washer count exceeds the nail count. Limitation: This package has 60 nails, so compare the counts with your project needs before choosing it.
BHTOP 200-Piece Plastic Cap Nails

BHTOP lists this package as 200 one-inch roofing nails with round plastic caps. The product description says the caps make it harder for water to get underneath. Its stated use cases include roofing, house wrap, foam board, roofing felt, and insulation film.
Best for: Buyers who need a higher stated quantity of one-inch cap nails for a project. Choose this if the length and round-cap format match the fastening requirements. Limitation: The provided product details do not specify the metal coating, shank design, or other construction details, so check the listing carefully if those features matter.
Buying Guide: How to Choose Nails With Plastic Washers
What nail length should you choose?
Compare the nail length with the material stack and the surface it must enter. These options range from one inch to one and a half inches. A longer nail is not automatically better; use the length specified for your roofing, wrap, or insulation application and account for the material beneath it.
Do you need attached caps or separate washers?
Most options are described as plastic cap nails. The LushPatio DIY kit instead lists nails and cap washers as separate components. Choose a kit with separate washers if that format suits your work process, and confirm that the washer size and nail fit match the project.
Does shank design matter?
The Grip-Rite product and LushPatio kit specifically list ringed shanks. Their descriptions associate the rings with resistance to pull-out or added grip. Other product listings do not provide comparable shank details, so do not assume all options have the same retention design.
How should you compare quantity and corrosion protection?
Package counts range from 60 nails plus 100 washers to 207 cap nails. Match the count to the planned work, allowing for the fastening pattern required by the project. Several options specify electro-galvanized treatment; the BHTOP details supplied here do not specify a coating. Follow the material and exposure requirements for the job.
Frequently Asked Questions
What are nails with plastic washers used for?
They are commonly used to fasten roofing felt, tar paper, house wrap, sheathing, foam board, and insulation film, depending on the product and project requirements.
Do plastic cap nails help keep water out?
The listed product descriptions say their round caps are designed to make it harder for water to get beneath them. They should not be treated as a substitute for the complete water-management system required by the project.
Are all plastic cap nails galvanized?
No. Several products in this comparison specify electro-galvanized nails, but the provided BHTOP description does not state a coating. Review product details when corrosion resistance is important.
Which option has the largest listed nail count?
The Grip-Rite package lists 207 nails, while the BHTOP package lists 200. The LushPatio kit lists 60 nails and 100 separate washers.
Should I choose a one-inch or longer nail?
Choose based on the required penetration into the underlying surface and the materials being fastened. Check project instructions rather than selecting by length alone.