K-Bond Adhesive Hardeners

Achieve fast, reliable curing with professional hardeners formulated specifically for K-Bond stone adhesives.

Need Consistent Cure Times for Stone Fabrication?

K-Bond Adhesive Hardeners are premium white benzoyl peroxide (BPO) paste activators engineered for use with K-Bond polyester, vinyl ester, and poly-epoxy stone adhesives. Designed for professional fabrication shops and installers, these hardeners provide predictable curing, strong bond development, and dependable performance for countertop fabrication, laminations, repairs, and seam work.

Using a recommended mixing ratio of 1% to 3% hardener by weight, K-Bond Hardeners produce a rapid 4–6 minute gel time and achieve a full cure in approximately 25–30 minutes. Available in convenient 1 oz. and 4 oz. tubes, they offer the flexibility needed for everything from small repairs to high-volume fabrication.

Whether you're bonding granite, marble, quartz, or other natural stone materials, K-Bond Hardeners deliver the consistent curing performance professionals rely on.

What Fabricators Use K-Bond Hardeners For

• Countertop laminations
• Stone seam assembly
• Granite fabrication
• Marble fabrication
• Quartz fabrication
• Stone repairs
• Edge bonding
• General stone adhesive activation

Advantages

• Designed specifically for K-Bond stone adhesives
• Compatible with polyester, vinyl ester, and poly-epoxy adhesives
• Fast 4–6 minute gel time
• Full cure in approximately 25–30 minutes
• Predictable, consistent curing performance
• Strong bond development
• Available in convenient 1 oz. and 4 oz. tubes
• Ideal for professional fabrication and repair applications

Specifications

• White benzoyl peroxide (BPO) paste activator
• Recommended Mix Ratio: 1%–3% hardener to adhesive
• Gel Time: 4–6 minutes
• Full Cure: 25–30 minutes
• Available Sizes: 1 oz. and 4 oz. tubes
• Compatible with K-Bond polyester, vinyl ester, and poly-epoxy adhesives

Compatible Materials

• Granite
• Marble
• Quartz
• Natural stone
• Engineered stone (when used with compatible K-Bond adhesives)

Why Choose K-Bond Adhesive Hardeners?

Reliable adhesive performance starts with proper curing. K-Bond Hardeners are formulated specifically to work with K-Bond stone adhesives, providing consistent activation, dependable working times, and strong finished bonds. Their predictable curing characteristics help fabricators work efficiently while maintaining high-quality seams and repairs.

Available in two convenient tube sizes, K-Bond Hardeners are ideal for both small repair jobs and everyday fabrication work. Whether you're laminating countertops, bonding stone edges, or performing repairs, these professional-grade activators help ensure optimal adhesive performance every time.

BB Industries has you covered!

Frequently Asked Questions

What adhesives are K-Bond Hardeners compatible with?

They are designed for use with K-Bond polyester, vinyl ester, and poly-epoxy stone adhesives.

What mixing ratio should be used?

The recommended ratio is 1% to 3% hardener to adhesive, depending on the desired cure speed and ambient conditions.

How quickly does the adhesive begin to cure?

K-Bond Hardeners provide a typical gel time of 4–6 minutes with a full cure achieved in approximately 25–30 minutes.

What stone materials can they be used with?

When paired with compatible K-Bond adhesives, they are suitable for bonding granite, marble, quartz, and other natural stone materials.

What package sizes are available?

K-Bond Hardeners are available in convenient 1 oz. and 4 oz. tubes for projects of all sizes.