INSTANT PU REPAIR – Fast-Curing Polyurethane Concrete Crack Repair

INSTANT PU REPAIR by Lab Surface is a professional-grade, two-component aromatic polyurethane repair system designed for ultra-fast concrete crack and surface repairs.

Featuring an ultra-low-viscosity formulation and rapid-curing technology, INSTANT PU REPAIR is engineered to penetrate small cracks, voids, and surface imperfections, providing an efficient repair solution before installing compatible concrete coating systems.

Its fast-curing properties help contractors minimize downtime during surface preparation, making it particularly valuable for projects requiring quick turnaround times.

Designed for professional concrete flooring applications, INSTANT PU REPAIR can also be used for compatible below-grade repairs and at very low temperatures, subject to the manufacturer’s application requirements.

This product is specifically designed for use with Lab Surface LABFAST products and should not be assumed compatible with other coating systems without manufacturer approval.

Features & Benefits

• Ultra-Fast Curing: Designed to cure rapidly, helping contractors reduce downtime during concrete repairs.
• Two-Component Polyurethane System: Uses a 1A:1B mixing ratio for consistent preparation and curing.
• Ultra-Low Viscosity: Allows material to penetrate small cracks, holes, and compatible concrete voids.
• Concrete Crack Repair: Designed for repairing small cracks and surface imperfections before coating applications.
• Small Hole & Void Repair: Suitable for filling compatible surface defects in concrete.
• Low-Temperature Applications: Formulated for use at very low temperatures within the manufacturer’s specified limits.
• Below-Grade Repair Capability: Suitable for certain below-grade concrete repairs when approved by the manufacturer.
• Rapid Project Turnaround: Helps minimize delays between concrete repair and subsequent preparation steps.
• Professional-Grade Performance: Designed for demanding concrete flooring and surface preparation applications.

Recommended Applications

• Small concrete crack repairs
• Filling minor holes and surface voids
• Concrete floor preparation
• Repairs before compatible LABFAST flooring installations
• Residential garage floor repairs
• Commercial concrete floor restoration
• Industrial concrete surface repairs
• Compatible below-grade concrete repairs
• Low-temperature concrete repair applications
• Fast-turnaround flooring projects

Product Specifications

• Brand: Lab Surface
• Product Name: INSTANT PU REPAIR
• Product Type: Two-Component Polyurethane Concrete Repair
• Resin Technology: Aromatic Polyurethane
• Viscosity: Ultra-Low
• Mixing Ratio: 1 Part A to 1 Part B
• Curing Characteristics: Ultra-Fast Curing
• Primary Application: Small Concrete Cracks, Holes, and Surface Repairs
• Low-Temperature Application: Yes, Within Manufacturer Specifications
• Below-Grade Applications: Compatible Applications Only
• Coating System Compatibility: LABFAST Products Only
• Kit Size: 2 Gallons
• Part A: 1 Gallon
• Part B: 1 Gallon
• Quantity: Sold by the Kit

Application Recommendations

1. Surface Preparation

Ensure the concrete is structurally sound and free from loose debris, dust, oil, grease, and contaminants that could interfere with adhesion.

Open and clean cracks as required by the manufacturer’s repair procedures.

Remove loose material using appropriate mechanical preparation methods and thoroughly vacuum the repair area.

2. Mixing

INSTANT PU REPAIR uses a 1:1 mixing ratio (Part A to Part B).

Measure and combine the components according to the manufacturer’s instructions.

Because this is an ultra-fast-curing product, prepare the repair area and application equipment before mixing.

Only mix quantities that can be placed within the manufacturer’s specified working time.

3. Application

Apply the mixed material into properly prepared cracks, holes, or surface voids using a compatible application method.

Allow the low-viscosity formulation to penetrate the repair area.

Additional filling or repair steps may be required depending on the size and depth of the defect.

4. Curing & Surface Preparation

Allow the repair material to cure according to the manufacturer’s technical data sheet.

Once the material has reached the required cure, perform any necessary grinding or surface preparation before installing the approved coating system.

Actual curing times depend on temperature, repair dimensions, and application conditions.

Why Contractors Choose INSTANT PU REPAIR

Concrete repairs can significantly affect flooring installation schedules, particularly when traditional repair materials require extended curing times.

INSTANT PU REPAIR provides contractors with a rapid-curing, low-viscosity repair solution designed to address small concrete defects while reducing project downtime.

Its combination of fast curing, crack penetration, and low-temperature application capabilities makes it a practical repair product for compatible LABFAST flooring installations.

Available at Coatings HQ

Coatings HQ supplies INSTANT PU REPAIR and professional-grade concrete surface preparation materials for residential, commercial, and industrial flooring contractors.

From diamond grinding equipment and crack repair materials to epoxy coatings, polyurethanes, and application accessories, Coatings HQ provides the products and technical guidance contractors need to complete professional flooring installations.

Contractor Pricing Available: Qualified contractors can apply for a Coatings HQ PRO account to access exclusive contractor pricing on eligible concrete repair products and flooring materials.

Important: INSTANT PU REPAIR is specified for compatibility with LABFAST products only. Do not use beneath other epoxy, urethane, or polyaspartic systems without written manufacturer approval. Always review the current Technical Data Sheet (TDS) and Safety Data Sheet (SDS) for mixing instructions, working time, application temperature limits, curing requirements, and safety precautions.