Sonneborne NP1 Polyurethane Sealant, White, 11 oz Cartridge

Sonneborne NP1 sealant in white comes in an 11 oz cartridge for sealing joints and penetrations in exterior building assemblies. Part of the well-known NP1 polyurethane sealant line, it is a go-to caulk-and-sealant choice for roofing and building envelope details. One cartridge per tube; pairs with standard caulk guns.

Key Features:

• NP1 formula: Part of the Sonneborne NP1 sealant line for exterior joint sealing.
• White color: White sealant blends with white membrane terminations, trim and flashing details.
• 11 oz cartridge: Standard 11 oz cartridge fits most manual and cordless caulk guns.
• Versatile sealing: Suited for caulk and sealant applications across building materials.

Specifications Table:

Fit and Compatibility:

Use in a standard 10 oz/11 oz caulk gun. Verify substrate and joint preparation with the manufacturer’s data sheet before applying; pair with compatible backer rod and primers where required.

Frequently Asked Questions (FAQ):

Q: What is included?
A: One 11 oz cartridge of Sonneborne NP1 sealant in white.

Q: What size cartridge is it?
A: It is an 11 oz cartridge that fits standard caulk guns.

Q: What color is this NP1?
A: This listing is white; other NP1 colors may be available separately.

Q: Where is it used?
A: It is a caulk-and-sealant product used for sealing joints and details in building assemblies.

Q: How is it sold?
A: It is sold per tube.

Expert Verdict Reviewed by the SuperArbor Pro Desk

NP1 is a long-standing polyurethane sealant trusted for terminations, laps and penetration details where a durable, paintable bead is needed. Tool the bead within its skin time for a tight fillet, and keep an unopened tube in the truck for emergency flashing repairs. Always confirm substrate compatibility and cure times with the manufacturer’s current data sheet before specifying.

Polyurethane sealants contain isocyanates; use in ventilated areas and wear gloves and eye protection during application.

Order Sonneborne NP1 white sealant in 11 oz cartridges for dependable joint sealing on your next job.