Since 2009, Mokesa AG has been working at the EfW plant in Stuttgart-Münster. The results of joint development efforts are two practical product innovations to protect superheater droppers. On the one hand, the special rammable FlexProtect UHS 90 is now used and on the other, the registered design rear-ventilated tiling system Mokesys® Air UHS. The SiC ramming mass FlexProtect UHS 90 is characterised by its low gas permeability and has shown more than sufficient mechanical strength. The rear-ventilated tile system Mokesys® Air UHS is an innovative type of dropper protection which combines optimal corrosion protection with very short time requirements for demolition and installation.