STRONGHOLD® BUTYL is optimized for use with the NXT UMOUNT® system. Featuring a pre-applied butyl pad, this mount eliminates the need for messy sealants or flashing. Just peel, place, and fasten for a quick, clean installation. Engineered for reliable waterproofing and structural integrity, STRONGHOLD BUTYL is ideal for both rafter and direct-to-deck applications—delivering a durable, easy-to-install solution that integrates seamlessly with Unirac’s open channel rail system.
Open slot design and included NXT rail clamp make rail connectivity and wire management seamless. Proven compatibility ensures peak system performance and structural integrity.
Pre-applied butyl pad means no metal flashing, no mess—just peel, place, and fasten.
Supports both rafter and direct-to-deck installations.
Speeds up install time with fewer components and no shingle disturbance.
Butyl material conforms to the roof and screws for a strong, water-tight bond.
Long-lasting seal withstands extreme temperatures and weather conditions.
Meets the UL 2703A standard.
Product is approved for High Velocity Hurricane Zone of the Florida Building Code. NOA No. 24-0129.06.
Each kit includes ONE (1) Butyl Attachment, ONE( 1) NXT Rail Clamp, and TWO (2) #14 Screws with Sealing Washer for Rafter Mounting. Additional #14 Screws and Butyl Pads are sold separately.
NXT UMOUNT™ is Unirac’s next-generation flush-mount racking system, engineered for smarter, faster solar installs.
One-step butyl installation. Simply peel, stick and fasten with deck screws.
Same one-step butyl installation. Four additional screws will be needed for proper installation.
Please reference the STRONGHOLD BUTYL Installation Manual for complete instructions.
Our preferred rail-based system delivers strength, speed, and a smarter installation experience. Built for pros who want reliable performance without added complexity.