How To Apply MasterSeal® NP 2 Sealant Ensure substrate is structurally sound, fully cured, dry and clean Use [MasterSeal P 176] primer as necessary If required, install the appropriate size backer rod for the joint Open the pail and remove the NP 2 activator and plastic sheet Open and pour the NP 2 activator into the pail Thoroughly mix for 4-6 minutes with a slow speed drill and sealant mixing paddle Add MasterSeal 900 pigment into the pail Continue mixing until the pigment is evenly dispersed Draw sealant into caulking gun Attach cone to the caulking gun Cut the cone slightly smaller than the width of the joint Fill joint from the deepest point, to the surface Dry tool joints to create a smooth, concave shape Refer to the MasterSeal NP 2 technical data guide for more information.