Weld-Crete® 200: The Ultimate Concrete Bonding Agent

When it comes to bonding new concrete to existing surfaces, you need a solution that is “permanently re-wetable.” Weld-Crete® 200 is the industry standard for high-performance chemical bonding, designed to ensure your repairs and overlays stay put for a lifetime.

Why Choose Weld-Crete® 200?

Unlike traditional bonding agents that require you to pour concrete while the adhesive is still tacky, Weld-Crete® gives you the gift of time. Once applied, it dries to a film that can be topped with new concrete immediately—or up to 10 days later.

Key Benefits at a Glance

• Unmatched Versatility: Bonds new concrete, cement plaster, and terrazzo to any structurally sound surface including old concrete, brick, stone, metal, and even ceramic tile.
• “Open Time” Flexibility: Its unique re-wetable formula allows you to apply the agent today and pour your concrete days later without losing bond strength.
• Interior & Exterior Use: Engineered to perform in both indoor environments and exterior applications (provided it is not subjected to hydrostatic pressure).
• Superior Bond Strength: Creates a molecular bond that is often stronger than the concrete itself, significantly reducing the risk of delamination or “hollow” spots.
• Easy Application: Can be applied quickly using a brush, roller, or spray, making it ideal for large-scale commercial projects or small residential repairs.

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Technical Performance

Feature	Specification
Bond Strength	Exceeds ASTM C-631 and ASTM C-932 requirements
Drying Time	Approx. 1 hour (depending on humidity)
Placement Window	Apply topping immediately or up to 10 days later
Coverage	Approx. 200–300 sq. ft. per gallon

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Ideal Applications

• Bonding Concrete Overlays: Perfect for leveling old floors or adding decorative toppings.
• Repairing Columns & Beams: Ensures structural patches adhere perfectly to the substrate.
• Pool Aprons & Sidewalks: Provides a durable bond for exterior flatwork.
• Tuck Pointing: Enhances the bond of mortar in masonry repairs.

Pro Tip: Ensure the host surface is clean and free of oil, grease, or loose debris before application to achieve the maximum bond strength possible.

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Ready to start your next masonry project?