High-Strength D4 Adhesive for Joists, Flooring & Structural Woodwork

When you need a powerful, moisture-resistant bond for demanding wood applications, Soudal Joint & Joist D4 PU Adhesive 1kg delivers exceptional performance. This premium D4 adhesive is designed for heavy-duty bonding across a wide range of timber materials, making it the ideal choice for flooring installations, structural joints, and exterior woodworking tasks.

Formulated as a one-component PU adhesive, it offers outstanding durability, high bond strength, and a foaming action that actively fills gaps – perfect for uneven surfaces and tongue & groove setups. Whether you’re fixing floorboards to joists or bonding chipboard, MDF, OSB, or hardwood materials, this adhesive ensures reliable results.

Designed for both interior and exterior applications, Soudal’s D4 adhesive offers long-term resistance to moisture and weather exposure. Its expanding action helps strengthen joins while improving stability across flooring systems.

Key Features of the D4 Adhesive from Soudal:

• Premium D4 adhesive for high-strength wood bonding.
• PU adhesive formula with foaming action to fill gaps.
• Water resistant to class D4 for interior and exterior use.
• Ideal for floorboards, joists, chipboard, MDF, OSB and more.
• Extremely durable with excellent final bond strength.
• Expands to compensate for uneven surfaces.

Useful Information

For best results, apply the adhesive to one surface using a brush. Join materials within 15 minutes and clamp for at least 3 hours to ensure full curing and maximum strength. A preliminary compatibility test is recommended, especially when used with other manufacturers’ structural flooring systems.

Soudal Joint & Joist D4 Adhesive technical data sheet.