Unirac NXT STRONGHOLD Butyl Attachment Kit Dark (1 pc) SHBUTYLD2-US

The Unirac SHBUTYLD2-US NXT STRONGHOLD Butyl Attachment Kit is a flashless roof attachment solution designed for fast, secure, and watertight mounting of solar racking systems. Engineered for the NXT UMOUNT platform, this attachment base uses a pre-applied butyl sealing pad to eliminate the need for traditional flashing.

This streamlined design allows installers to simply peel, place, and fasten the attachment directly to the roof surface, creating a reliable seal that conforms around fasteners for long-term weather protection and durability.

This US-designated version includes domestic content and, when used in accordance with IRS provisions, may qualify for Domestic Content Bonus Credit eligibility.

Key Features

• Flashless Butyl Sealing Technology
  Pre-installed butyl pad provides a watertight seal without the need for additional flashing or sealants. 

• Quick Peel-and-Stick Installation
  Simple installation process reduces labor time—just peel, position, and secure the attachment.

• Reliable Roof Protection
  Butyl material conforms tightly around fasteners, preventing water intrusion and ensuring long-term durability. 

• Integrated Structural Attachment
  Provides a strong, secure mounting point for NXT UMOUNT rail systems.

• Dark Anodized Finish
  Offers corrosion resistance and a sleek, low-profile aesthetic on rooftop installations.

• Reduced Component Count
  Eliminates the need for separate flashing, simplifying system design and inventory.

• NXT UMOUNT Compatibility
  Designed specifically for seamless integration with Unirac NXT UMOUNT racking systems.

Best Uses

• Composition Shingle Roof Installations
  Ideal for fast, watertight mounting without traditional flashing methods.

• Residential & Commercial Rooftop Systems
  Provides secure attachment points for a wide range of solar installations.

• High-Efficiency Installations
  Perfect for projects prioritizing speed, simplicity, and reduced labor costs.

Product Specifications

Fast, Flashless Roof Attachment with Built-In Protection

The Unirac SHBUTYLD2-US STRONGHOLD Butyl Attachment Kit delivers a simple, reliable, and installer-friendly solution for roof mounting—combining watertight sealing, structural strength, and fast installation into one efficient component.

Why Buy From US Solar Supplier

US Solar Supplier is an American-founded company based in Kentucky dedicated to offering top-quality solar components from trusted manufacturers. We provide competitive pricing, dependable inventory, and products backed by warranties you can trust.

Our inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.

Need Assistance?

Have questions before you order? Call 1-800-230-7004 to speak with our knowledgeable support team. We’re here to help with product details, compatibility questions, or purchasing support.