When installing drywall, use the minimum drywall setback on the PRO-90 Archway Bead to ensure the proper fit and to achieve maximum adhesion. Avoid using the tapered edge of the drywall board on outside corners. Make sure the surfaces of the corner are clean and smooth. Measure and cut the PRO-90 Archway Bead to length, subtract ½’ for vertical applications. Dry fit the archway bead to ensure the optimum fit.
For optimal results spray the drywall surface and the flanges of the PRO-90 Archway Bead with 2 coats drywall adhesive and position the archway bead into place. Once in position, apply pressure with the handle of your taping knife and then staple the corner bead every 6”– 8” with ½” staples on the solid leg and every other tab on the arched leg to keep the bead tight to the drywall surface and to ensure a solid bond.
Using an 8” taping knife, apply a first coat of joint compound to the surface of the archway bead. The use lightweight compound or setting-type compound in this step will reduce shrinkage and speed up the drying time. Let this dry completely, for several hours or overnight.
Using a 10” taping knife, apply the final coat of joint compound. Feather the compound beyond the previous coat. The use of all-purpose compound or topping compound will make for a more durable finish. Let this dry completely, for several hours or overnight.
Lightly sand with 120 grit sandpaper to finish.