www.floortrendsmag.com/articles/113252-schonox-ap-rapid-plus

Photo: Schönox.
Schönox Ap Rapid Plus Self-Leveler Designed for Fast-Track Installations
February 19, 2025
Schönox Ap Rapid Plus is a pumpable self-leveling compound designed for deep pour, fast-track installations on most substrates in interior areas. May be installed above 1/8" up to 3". Suitable on concrete, cement, gypsum, old flooring, old water-resistant residues, OSB, and plywood and leveling of substrates under flexible coverings and wood flooring. Ready for covering after 16 hours at 1/2″ and 48 hours at 2″.
Unit Size: 55lb. net wt.
PSI: 3800 after 1 day
PSI: 6300 after 28 days