If you are specifying acoustic insulation for a new build or renovation, understanding the nuances of the CD Reef V4 CSTB 2021 technical dossier is non-negotiable for code compliance and occupant comfort. CD Reef V4 is a fourth-generation resilient acoustic underlayment, primarily manufactured for use under cementitious and anhydrite screeds. Unlike traditional foam or rubber underlays, the "Reef" series utilizes a high-density recycled elastomer matrix, often incorporating granulated rubber bonded with polyurethane resins. The "V4" designation signifies the fourth version of this product line, incorporating improvements in compression resistance, thermal conductivity, and long-term creep behavior based on feedback from prior installations.
Introduction In the world of building acoustics and floor screed technology, few documents command as much respect as the CSTB (Centre Scientifique et Technique du Bâtiment) evaluation. For contractors, architects, and acoustic engineers, the keyword "CD Reef V4 CSTB 2021" represents a critical milestone in resilient flooring underlayment. This article dissects every aspect of this technical evaluation, from its mechanical properties to its real-world application in multi-story residential and commercial buildings. cd reef v4 cstb 2021
When specifying, always demand the full 2021 CSTB dossier. Check the date de validité , verify the dynamic stiffness values against your project’s required L'nT,w targets, and follow the installation protocol to the letter. Doing so will guarantee that your floors are quiet, durable, and legally compliant for decades to come. Disclaimer: This article is for informational purposes. Always consult the current CSTB database and manufacturer’s official documentation for the most up-to-date certifications, as technical evaluations may be revised or withdrawn. If you are specifying acoustic insulation for a
| Property | CD Reef V4 (2021) | Generic EVA Foam (30 kg/m³) | Cork/Rubber Blend | | :--- | :--- | :--- | :--- | | Dynamic Stiffness | 18 MN/m³ | 55 MN/m³ | 35 MN/m³ | | Long-term creep (20 yrs) | < 2% | 15–25% | 8–12% | | Recycled content | 85% | 0–10% | 40% | | CSTB 2021 certified? | Yes | No | Varies | | Suitable for heated screed | Yes (≤60°C) | No (softens) | Yes (≤50°C) | The "V4" designation signifies the fourth version of