Loctite PL® 400 Subfloor Adhesive is a premium polyurethane-based adhesive specifically formulated for subfloor installation and repair. Designed for professional and DIY use, it provides exceptionally strong, long-lasting bonds for plywood, OSB, and other subfloor materials, reducing squeaks and improving structural stability.

This adhesive is moisture- and weather-resistant, making it suitable for both interior and exterior applications, and it meets or exceeds APA specifications for subfloor adhesives.

Key Features

• High-strength polyurethane formula for subfloor applications

• Reduces squeaks and improves floor stability

• Moisture- and weather-resistant

• Bonds plywood, OSB, and engineered wood panels

• Easy application with standard caulking gun

• Paintable and sandable once cured

Common Applications

Loctite PL 400 Subfloor Adhesive is commonly used for:

• Plywood and OSB subfloor installation

• Floor repair and squeak reduction

• Engineered wood subfloor bonding

• Residential and commercial construction projects

• Interior and exterior subfloor applications

Specifications

• Brand: Loctite

• Product Name: PL® 400 Subfloor Adhesive

• Type: Polyurethane Subfloor Adhesive

• Color: Yellow

• Packaging: 28 oz cartridge

• Cure Type: Moisture curing

• Coverage: Approx. 150–200 linear ft per cartridge (varies by trowel/application)

• Compliance: Meets APA AFG-01 subfloor adhesive requirements

Why Contractors Choose Loctite PL 400

PL 400 is trusted for its long-lasting bond strength and durability, ensuring subfloor panels remain secure and quiet over time. Contractors value its easy application, gap-filling properties, and resistance to moisture, making it ideal for high-traffic and professional flooring projects.

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