Introduction: What is Froth-Pak? A lot has changed.

Froth-Pak is DuPont’s trusted line of two-part spray foam kits. Each kit combines two chemicals—an A-side and a B-side—that mix in the nozzle to create foam. The result? Quick, effective insulation and air-sealing in one easy system.

These kits are perfect for contractors (and confident DIYers) who need reliable foam for rim joists, wall penetrations, gaps, and other smaller-scale jobs—without bringing in a full spray rig.

Froth-Pak 200: Sealant for Smaller Jobs

• Designed to seal cavities, cracks, and joints.
• Best for fills up to about 2 inches by 4 inches.
• Tack-free in ~30 seconds, so you can keep working quickly.
• Uses the new low-GWP formula, cutting environmental impact by over 99% while staying HFC-free.

When to choose it: Great for sealing and insulating smaller spaces where precision matters more than volume.

Froth-Pak 630: Insulation + Sealant Power

• Covers 630 board feet at 1-inch thickness.
• Provides both insulation and sealing in one kit.
• Rated Class A for fire performance.
• Same low-GWP, HFC-free formula as the 200 kit.

When to choose it: Ideal for larger projects or when you want insulation and air-sealing together with higher yield.

What’s New?

1. Helical Nozzles

The new helical (spiral) nozzle design ensures better mixing of the two components. That means:

• Smoother spray patterns.
• Less overspray and waste.
• Cleaner, more controlled results.

2. Low-GWP Formulation

DuPont reformulated Froth-Pak with a new blowing agent that:

• Reduces global warming potential by more than 99%.
• Eliminates ozone-depleting chemicals and HFCs.
• Delivers the same performance professionals expect.

Quick Tips for Best Results

• Start with clean, dry surfaces.
• Use the included nozzles for proper mixing.
• Apply in thin passes (“flash coats”) if conditions are cold or damp.
• Always wear PPE and ensure good ventilation.
• Cover foam with a thermal barrier if building codes require it.

The Bottom Line

Froth-Pak 200 and 630 give you reliable foam solutions in a self-contained kit—now with greener chemistry and smarter nozzles. Whether you need small-scale sealing or larger insulation jobs, Froth-Pak helps you save energy, control air leaks, and get the job done faster and cleaner.