Kraken Bond Fastcoat Fire Rated Spray Foam Insulation - Class A R-5.66

In this review of Kraken Bond Fastcoat Fire Rated Spray Foam Insulation, the bottom line is straightforward: this kit is best for homeowners and contractors who need a Class-A fire rated, high-efficiency closed-cell foam that combines thermal and acoustic benefits. The reviewer found the primary reason to buy is the combination of a verified fire rating and solid R-value performance, which makes it a sensible choice for attic, wall, and crawl space work where safety and insulation performance matter.

Key Features

• Class-A fire rating: The kit meets ASTM E84 fire safety standards, giving added confidence in applications where enhanced fire resistance is required.
• High thermal performance: Closed-cell polyurethane delivers roughly R-5.66 per inch, helping reduce heat transfer in attics and walls.
• Complete kit for start-to-finish work: The package includes multiple cans, an ergonomic gun, foam cleaner, goggles, a worksuit, and gloves so users can get started without sourcing extras.
• Versatile application: Dual-nozzle design and adhesion to most building materials make it useful for vertical surfaces, ceilings, and hard-to-reach cavities.
• Temperature guidance for best results: The product performs best when cans are warmed to about 68F and can be applied between 41F and 86F, offering seasonal flexibility.
• Acoustic and moisture benefits: Dense, monolithic foam reduces sound transmission and helps form a watertight, airtight seal that limits drafts and pests.

Who It's For

This kit suits DIYers looking to tackle attic or wall insulation projects and professionals who need a portable closed-cell solution with a verified fire rating. The included safety gear and cleaner make it practical for single-day jobs where bringing a full toolset would be impractical.

Those who should look elsewhere include buyers seeking a single-can trial size or projects that require open-cell foam characteristics; also, a few customers reported defective cans or variable coverage, so contractors who require guaranteed uniform output for very large jobs may prefer bulk commercial systems.

Pros & Cons

Pros

• Class-A fire rating and ASTM E84 compliance for improved safety in assemblies.
• Strong thermal performance at about R-5.66 per inch for efficient insulation.
• Complete kit with gun, cleaner, and protective gear to start work immediately.
• Versatile dual-nozzle application that adheres to most building materials and reduces air leaks.

Cons

• Some customers reported inconsistent can quality or reduced coverage from defective cans, so expect occasional variability.
• Gun and can compatibility mean the kit may be overkill for very small patch jobs where a single can would suffice.

Specifications

Our Verdict

Kraken Bond Fastcoat is a compelling choice when fire resistance and thermal efficiency matter together, providing a turnkey kit that gets a job started quickly. It represents good value for attic, wall, and crawl space projects, though buyers should be mindful of occasional variability in can performance and choose accordingly for critical large-scale work.

Frequently Asked Questions

Is this safe around living spaces?
The kit is Class-A fire rated and designed for building use, but proper ventilation and following safety guidelines during installation are essential.

How should cans be stored before use?
Store and acclimate cans so they reach about 68F before use; the product still sprays between 41F and 86F but performs best at the optimal temperature.

Does the kit include a dispensing gun?
Yes, the package includes an ergonomic application gun and foam cleaner, plus goggles, a worksuit, and gloves for immediate application.