Watch how to apply MasterSeal NP 1, a one-component, high performance, non-priming, gun-grade, elastomeric polyurethane sealant (Video Transcript). Then learn more about the materials, tools and accessories required to do the job safely and efficiently.
MasterSeal NP 1 Sealant Application Video Transcript
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
When using 300 ml cartridges, cut tip of cartridge for desired width of the sealant bead
Puncture foil using a sharp object
Insert cartridge into caulking gun
When using 20-ounce propaks, insert propak into a bulk caulking gun
Open propak with a razor knife, then 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 1 technical data guide for more information.
Sealant Application Materials, Tools and Accessories