Using the most current version (like the 2021 update) ensures that professionals are following the specific standards in force at the time of their project's inception, which is vital for insurance and decennial liability.
The year is critical. It was a post-COVID period where supply chains were volatile, but regulatory standards in Europe were tightening, specifically regarding rainwater management (following French regulations like the Arrêté du 21 juillet 2015 regarding non-point source pollution). cd reef v4 cstb 2021
Upon unboxing, the V4 immediately strikes you with its . The toe box is aggressively asymmetrical, with a pronounced camber. However, the heel cup is surprisingly deep and anatomical. Using the most current version (like the 2021