GREAT STUFF PRO Gaps & Cracks – 24 oz Fireblock Foam Sealant (Pack of 12)

Overview

GREAT STUFF PRO Gaps & Cracks is a gun-applied polyurethane foam sealant that expands up to 3 inches, taking the shape of gaps to form a durable, water-resistant barrier around plumbing, electrical runs, and framing in basements, attics, and other spaces. Made in the USA, this sealant is designed for professional applications where a tight seal matters.

What makes it stand out

• Each can is 24 oz and sold in a pack of 12, supporting larger projects or multiple rooms.
• Expands to fill gaps up to 3 inches, delivering a consistent insulating envelope around penetrations.
• Fireblock rated with a distinctive orange color to help identify fireblocking in concealed spaces and support code awareness.
• Reduces energy loss by minimizing air leaks, contributing to improved overall efficiency.
• Fast-setting and trim-ready: tack-free in 3-10 minutes and trimable in about 60 minutes for efficient workflow.

Where it shines

Ideal for areas like basements, attics, crawl spaces, and utility zones where framing, pipes, vents, and electrical runs pass through. The polyurethane foam adheres to common construction substrates and creates a flexible, airtight barrier that resists moisture as it cures.

Tips for best results

• Apply with a standard caulking gun for controlled placement and tidy cleanup.
• Surfaces can be slightly damp; the foam expands and cures into a firm, compressible seal.
• After curing, trim the excess to blend with surrounding surfaces for a neat finish.

Note: Real-world performance depends on gap size, substrate, and climate. This description reflects the features provided and presents potential benefits rather than guarantees.