ULTRATRIM™ INSIDE 90 Drywall Corner Trim
Drywall Corner Trim Installation Tips and Instructions

TIPS  

  •  NO-COAT® drywall corners have a built-in flexible hinge that can adjust to any angle. If a wall is far out of plumb, simply pinch the NO-COAT® corner trim and adjust it accordingly. We also recommend applying an excess of All-Purpose joint compound to compensate for large gaps.

  • When storing ULTRATRIM™ corners, lay boxes flat on the floor. Leaning boxes against a wall may eventually cause the corners to warp.

 

  • Tape and coat drywall board seams and ceiling joints before applying NO-COAT® drywall corners. This will create a smoother surface for corner trim application, and a straighter finished profile.

 

 
INSTALLATION INSTRUCTIONS  

1. Using a 4” – 6” taping knife, apply All-Purpose joint compound to drywall slightly beyond where the edge of the corner will be.

 

 

2. Place ULTRATRIM Inside 90 corner on wall and press into position by hand. The joint tape side (with the NO-COAT® logo) of the corner goes against the drywall. Corner should be aligned tightly to the ceiling.

 

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3. Embed trim by using a NO-COAT® ULTRATOOL™ INSIDE 90 Roller or by running the knife over it with even pressure at a 45 degree angle to press the corner into position.

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4. Using the same knife, skim over the corner with All-Purpose joint compound. Let dry.

 

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5. Using a 6” – 8” finishing knife, skim over the corner with All-Purpose joint compound once more. Let dry. Sand and paint.

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The NO-COAT®  Double Barrel Hopper
The NO-COAT®  Hopper accommodates all inside and outside angles without time-consuming part changeovers and reconfigurations.

TIP: Before filling the NO-COAT® Double Barrel Hopper with All-Purpose joint compound, run a short piece of corner through the Hopper gates. This allows you to make the most accurate tolerance adjustment. To avoid run off, compound should have the same consistency as boxing mud.

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ULTRATOOL™ INSIDE 90 Roller
Applying our trim corners is fast and easy. Simply place the ULTRATRIM Inside 90 corner on the wall and use our roller to press it into position.

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BOX IT
Set your 7” or 10” box to #3 and box up to 30 feet of corners in minutes.  NO-COAT corner trim uses 30 - 50% less mud than corner bead, so you won’t run out of joint compound before you’re done boxing your corner.
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