How to Apply MasterProtect H 400 sealer Mix material thoroughly before and during the application Ensure substrate is structurally sound, fully cured, dry and clean Open spout on top of pail, remove tab inside spout Pour into low-pressure, non-atomizing sprayer Flood the surface, starting at the bottom and moving up Achieve a controlled rundown of 8-10 inches Refer to the MasterProtect H 400 technical data guide for more information.