Cap Staples 1-1/2 StaplePac with 1 in Caps - Durable WeatherResistant

In this review the Cap Staples StaplePac is evaluated for installers who need a reliable collated cap fastener for housewrap and synthetic underlayment. The bottom line is straightforward: this StaplePac is best for roofers, siding crews, and DIYers who use the CS150B pneumatic cap stapler and want weather-resistant holding power across large runs. It pairs 1 in (25mm) plastic caps with 1-1/2 in (38mm) 18ga staples to give a combination of cap protection and staple reach that simplifies installs and reduces material failures in windy or exposed conditions.

Key Features

• Collated 1 in caps: Collated plastic caps provide a consistent surface area to protect underlayment and help prevent tearing during high wind or thermal movement.
• 1-1/2 in 18ga staples: The 7/16 in crown, 1-1/2 in leg staples deliver the length and gauge needed to anchor synthetic underlayment and foamboard securely into framing.
• ASTM F1667 compliant: Meeting this standard means the fasteners conform to recognized performance and dimensional expectations for construction staples.
• Pack coverage: Each StaplePac contains 10 rolls of 200 caps and 20 strips of 100 staples and is designed to cover roughly 25 square per pack, aiding job planning and ordering.
• Designed for CS150B: The Staples are intended for exclusive use with the pneumatic CS150B Cap Stapler, ensuring smooth feeding and fewer jams when used with the right tool.

Who It's For

This product is aimed at professional contractors and serious DIYers who already own or plan to use the CS150B pneumatic cap stapler and need a collated fastener that resists UV and wind. It is especially helpful for siding and roofing teams installing housewrap, synthetic underlayment, foamboard, and lumber wrap where a cap reduces tearing and improves long-term hold.

It is not suited for general household stapling or for staplers other than the CS150B; buyers without the matching pneumatic stapler should look for universal or hand-drive cap options instead. Those needing a different leg length should consider the other StaplePac length options mentioned by the manufacturer.

Pros & Cons

Pros

• Effective weather protection from the collated caps helps reduce tears in housewrap and underlayment.
• Good holding power from the 18ga 1-1/2 in staples, appropriate for foamboard and wrap applications.
• Large pack and predictable coverage make it easier to estimate materials for a job.
• ASTM compliance offers confidence in dimensions and expected performance.

Cons

• Exclusive compatibility with the CS150B pneumatic cap stapler limits use to owners of that tool.
• Some users report mixed impressions of sturdiness in certain applications, so performance can vary by substrate.

Specifications

Brand	STINGER
Cap diameter	1 in (25mm) collated plastic caps
Staple size	1-1/2 in (38mm) leg, 7/16 in (11mm) crown, 18ga
Standards	Meets ASTM F1667
Pack contents	10 rolls of 200 caps and 20 strips of 100 staples (2000 count)
Estimated coverage	Approximately 25 square per StaplePac
Tool compatibility	For exclusive use with STINGER CS150B pneumatic cap stapler

Our Verdict

The StaplePac with 1 in caps and 1-1/2 in 18ga staples is a practical choice for professionals and serious DIYers who use the CS150B stapler and need consistent, weather-resistant fastening for housewrap and underlayment. It offers good value when ordered for jobs that match its coverage and tool requirements, though buyers should ensure compatibility with their stapler and the specific substrate before committing.

Frequently Asked Questions

Can these staples be used in other cap staplers?
They are designed for exclusive use with the CS150B pneumatic cap stapler; using them in other staplers may cause feeding or compatibility issues.

How much area does one pack cover?
One StaplePac is intended to cover approximately 25 square, which helps when estimating quantities for a roof or siding job.

Do the caps hold up to sunlight?
STINGER reports that their collated caps withstand UV exposure significantly longer than hand drive caps and are intended to resist weathering in exposed installations.