Unirac NXT STRONGHOLD Attachment w/ Butyl - Mill | SHBUTYLM2-US

The Unirac SHBUTYLM2-US NXT STRONGHOLD Attachment Kit is a flashless roof mounting solution designed for fast, secure, and watertight solar installations. Built for the NXT UMOUNT system, this attachment features a pre-applied butyl sealing pad that eliminates the need for traditional flashing or additional sealants.

Its simple peel, place, and fasten installation method reduces labor time while ensuring a durable seal that conforms tightly around fasteners to protect against water intrusion.

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

Key Features

• Flashless Butyl Sealing Technology
  Pre-installed butyl pad provides reliable waterproofing without the need for flashing or sealants. 

• One-Step Installation
  Simple peel-and-stick application allows quick placement and fastening, reducing installation time. 

• Strong Structural Attachment
  Engineered for secure mounting with NXT UMOUNT rails, maintaining system integrity in various conditions. 

• Dual Mounting Options
  Supports both rafter and direct-to-deck installation for flexible system design.

• Durable Weatherproof Design
  Butyl material conforms to the roof and fasteners, creating a long-lasting watertight seal resistant to extreme weather.

• Complete Kit Convenience
  Includes attachment base, rail clamp, and mounting screws for a full installation solution. 

• Mill Finish Aluminum
  Corrosion-resistant construction ensures long-term outdoor durability.

Best Uses

• Composition Shingle Roofs
  Ideal for fast, watertight installations without disturbing roof structure.

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

• High-Efficiency Installations
  Perfect for projects prioritizing reduced labor, fewer components, and clean installs.

Product Specifications

Fast, Flashless Mounting with Proven Protection

The Unirac SHBUTYLM2-US STRONGHOLD Attachment Kit provides a simple, durable, and installer-friendly solution for solar mounting—combining structural strength and waterproof sealing into a single, 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.

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