CHEMPU Heavy-Duty Construction Adhesives Portfolio
Engineered to replace mechanical screws and nails across dry construction, subfloor installation, interior fit-out, and industrial assembly.
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Structural Bonding, Subfloor Adhesion & EN 204 D4 Standards Guide
High-strength industrial adhesive solutions for precast subfloors, timber joinery, aluminum window corners, and acoustic flooring.
🪵 Substrate Compatibility & Engineering Performance
❓ Technical FAQs for Construction Adhesives
Q1: What does EN 204 D4 classification signify for CHEMPU PUR-15 Wood Adhesive?
EN 204 D4 is the highest European standard for wood adhesives subjected to interior applications with frequent long-term exposure to running or condensed water, and exterior applications exposed to severe weather conditions with adequate surface protection. CHEMPU PUR-15 achieves >10 MPa shear strength with full wood-fiber failure after boiling water exposure test cycles.
Q2: Why choose elastic PU-24 over rigid adhesives for solid wood flooring?
Solid hardwood naturally expands and contracts with seasonal changes in room relative humidity. Rigid adhesives cause excessive shear stress on the concrete screed, resulting in plank cupping or subfloor debonding. CHEMPU PU-24 features an engineered elasticity modulus that absorbs lateral timber movement while providing acoustic sound dampening (reduces impact sound up to 14 dB) and full compatibility with radiant underfloor heating systems.
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Looking for alternative chemistries or specialized sealing systems? CHEMPU manufactures a complete spectrum of high-performance construction adhesives and sealants for global engineering contractors and distributors.
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