Cd Reef V4 Cstb 2021 Review
A 14-story apartment building (112 units) specified CD Reef V4 CSTB 2021 after a previous underlayment failed acoustic testing. The building design required compliance with NRA (Nouvelle Réglementation Acoustique) standards.
In the evolving landscape of urban hydrology and sustainable construction, product certifications serve as the benchmark for quality, safety, and performance. One reference that has gained significant traction among engineers, landscapers, and local authorities in French-speaking markets (and beyond) is the CD Reef V4 CSTB 2021.
For professionals involved in stormwater management, infiltration systems, or subsurface retention, understanding this specific certification is not merely a technical detail—it is a legal and functional necessity. This article provides a comprehensive breakdown of the CD Reef V4, its CSTB (Centre Scientifique et Technique du Bâtiment) appraisal from 2021, and why this combination of letters and numbers dictates specification choices for major infrastructure projects.
Authentic technical documentation can be found via: cd reef v4 cstb 2021
Be wary of vendors showing a "CSTB test report" rather than a full "CSTB Technical Appraisal." A test report is not an approval.
Before discussing the 2021 evaluation, one must understand the authority of the CSTB. Based near Paris, the CSTB is France's official scientific and technical center for building. A CSTB Technical Appraisal (Avis Technique) or Technical Evaluation (ATE) is the gold standard for innovative construction products. It validates:
Thus, when we speak of CD Reef V4 CSTB 2021, we are referring to the specific evaluation number and year that formally recognized this underlayment for use in French and European construction markets. A 14-story apartment building (112 units) specified CD
The full technical report “CD Reef v4 – Modèle de récif artificiel pour la protection côtière” (CSTB 2021, ref. DEE 2021-09) can be requested via:
📧 contact@cstb.fr
🌐 www.cstb.fr/en/projects/cd-reef
Note: As of 2026, the dataset and a simplified GUI are available on CSTB’s research data portal.
Based on the context of "CSTB 2021" and the terminology used, this appears to be a reference to a scientific paper or conference presentation, likely in the field of marine biology or environmental science, specifically regarding coral reefs. Be wary of vendors showing a "CSTB test
Here is a breakdown of why this write-up is considered "interesting" and the likely context behind it:
The CSTB 2021 tests, conducted using ISO 10140-2 standards, confirmed that CD Reef V4, when combined with a 5cm floating screed, achieves a weighted standardized level difference (DnT,w) of up to 64 dB. This exceeds the French minimum requirement of 58 dB for horizontal circulation in dwellings.