How effective was the RF blocking paint at reducing Wi-Fi interference, and what challenges were encountered during the application process?

The RF blocking paint proved surprisingly effective at reducing Wi-Fi interference in the apartment, delivering good results on Wi-Fi performance despite the application challenges. The paint transformed the apartment's ambiance dramatically, creating darker walls that the residents actually found appealing, though they plan to apply a protective eggshell coating due to the graphite content that leaves residue when touched. However, the project encountered significant issues due to improper preparation. A miscommunication resulted in the RF paint being applied directly to the ceiling without primer or protective coating, causing the ceiling to deteriorate. Despite this setback, the paint's primary function of blocking wireless interference remained effective, demonstrating that proper preparation is crucial for successful DIY projects involving specialized materials.