Best Staples for Roofing Felt: A Complete Guide: Fast-Track Guide to Choosing the Right Size Staples

When it comes to installing roofing felt, choosing the right fasteners is crucial for longevity and overall performance. Staples are a popular choice for attaching roofing felt because of their affordability and ease of use, but not all staples are created equal. This guide breaks down the best staples for roofing felt, how to choose the correct type and size, and tips for professional installation—all from a designer’s perspective focused on both function and finish.

Types of Staples for Roofing Felt

Most roofing professionals and DIY enthusiasts prefer galvanized steel staples for securing roofing felt. Galvanization prevents rust and corrosion, which is vital considering the felt will be exposed to moisture both during installation and over time. The most common staple type used is the T50, known for its sturdy build and broad compatibility with staple guns.

Best Staple Size For Roofing Felt

The optimal staple size for roofing felt typically measures 3/8 inch (10mm) in length. This size is long enough to penetrate the felt and underlying wood securely, but not so long as to risk damage or pull-through. The crown width (the flat top of the staple) should ideally be 3/8 inch or wider to spread pressure evenly and prevent tearing the felt material.

Manual vs. Pneumatic Staplers

While manual staple guns can get the job done for small projects, pneumatic (air-powered) staplers are recommended for larger jobs. They’re faster, reduce hand fatigue, and ensure consistent staple placement and depth—essential for both functional performance and a professional aesthetic.

Installation Tips From a Designer’s Perspective

It’s not just about securing the felt—every penetration in your roof is a potential weak point. Always staple along the overlap edges of the felt, spacing staples about 6 to 8 inches apart. Take care to center staples directly on support surfaces, and never staple exposed areas where water might wick through. Meticulous, evenly spaced staple placement yields a cleaner foundation for your roofing, which positively impacts the finished appearance of your roofline and overall property value.

As a designer, I recommend planning your staple placements before you start—much like you would map out a room’s lighting or furniture layout in interior design. Precision and intentional placement not only enhance performance but also ensure that any subsequent roof layers sit smoothly, avoiding lumps and bumps that can ruin curb appeal. Utilizing the right floor planning tools can help you visualize and map out precise installation patterns, integrating utility with style.

Tips 1:

Store your staples in a dry area until use and always wear safety eyewear during installation for maximum protection and accuracy.

FAQ

Q: What size staples should be used for roofing felt?

A: Use 3/8 inch (10mm) galvanized staples with a crown width of at least 3/8 inch for optimal hold and durability.

Q: Are staples better than nails for securing roofing felt?

A: Staples are faster and easier for felt installation, but in high-wind areas, roofing nails with plastic caps may provide extra hold.

Q: How far apart should staples be placed on roofing felt?

A: Space staples 6 to 8 inches apart along all seams and overlaps to ensure secure attachment without tearing the felt.

Q: Can I use a regular staple gun for roofing felt?

A: For small jobs, a high-quality manual staple gun is sufficient, but pneumatic staplers are recommended for larger areas for consistency and ease.

Q: Why use galvanized staples for roofing felt?

A: Galvanized staples resist rust and corrosion, extending the lifespan of your roofing felt even in damp environments.