Gray Hawk | Grayhawk Underlayment | Synthetic Underlayment

When it comes to roofing accessories that deliver performance, reliability, and lasting protection, Gray Hawk stands out as a trusted name in the roofing industry. At Roofing4US, we stock a wide selection of Gray Hawk products, tailored for both professionals and DIYers looking for quality tools and solutions to complete roofing installations with confidence.

What is Gray Hawk?

Gray Hawk offers a robust range of roofing accessories, including cap nails, tin caps, and roof fasteners, crafted to meet the needs of high-performance roofing systems. Known for their dependable strength and easy application, Gray Hawk products are ideal for securing roofing insulation, underlayment, and membranes in residential, commercial, and industrial settings.

Grayhawk Synthetic Underlayment 

Grayhawk Synthetic Underlayment is a high-performance, weather-resistant roofing layer designed to provide superior protection beneath shingles, metal panels, and other roofing materials. Unlike traditional felt, this synthetic underlayment is lightweight, tear-resistant, and engineered for excellent traction and walkability—making installation safer and faster for contractors. Its advanced polymer construction delivers exceptional durability and water-shedding capabilities, ensuring your roof stays protected from moisture infiltration, even during extended exposure. Whether you're working on a new build or a re-roofing project, Grayhawk Synthetic Underlayment offers the reliability and performance you need for long-term peace of mind.

Benefits of Grayhawk Synthetic Underlayment

• Superior Water Resistance: Keeps moisture out and prevents rot or mould buildup under your roofing material.
• Lightweight & Easy to Handle: Easier to carry, cut, and install compared to heavy felt rolls.
• Slip-Resistant Surface: Enhanced walkability helps reduce accidents and increases safety on the roof.
• Tear-Resistant & Durable: Withstands foot traffic, tools, and wind during installation without ripping.
• UV Resistant: Offers temporary UV protection, allowing for extended exposure before final roofing is installed.
• Long-Term Performance: Maintains integrity under shingles or metal roofing for years to come.

Applications of Grayhawk Synthetic Underlayment

• New roof installations for residential and commercial buildings
• Reroofing or roof replacement projects
• Suitable for use under asphalt shingles, metal panels, clay tiles, and more
• Ideal for pitched roofs in regions prone to rain, snow, or high winds

Installation Tips

• Ensure the roof deck is clean and dry before laying the underlayment.
• Begin installation from the bottom edge of the roof, working your way up with overlapping layers.
• Use compatible cap nails or staples to secure the underlayment every 6"-12" along the edges and in the field.
• For steep-slope roofs or high-wind zones, increase fastening frequency for better hold.
• Overlap horizontal seams by at least 4" and vertical seams by 6" for full coverage.
• Install primary roofing material within the manufacturer’s recommended UV exposure timeframe (typically 60–90 days).

Why Choose Roofing4US for Grayhawk Underlayment?

At Roofing4US, we offer only trusted, contractor-approved products like Grayhawk Synthetic Underlayment that combine performance with value. Here’s why customers choose us:

• Competitive pricing on top-rated roofing materials
• Fast, reliable delivery across the US
• In-stock availability for quick project turnaround
• Expert customer support to help you choose the right product
• Trusted by professionals and DIYers alike