Skim Coat Walls for a Smooth Finish

Skim coating walls. For when they’re too rough for paint. Here’s the process.

What It Is

Thin layer of joint compound over entire wall surface. Creates smooth base for painting.

Covers texture, minor damage, uneven surfaces. Not structural repair. Cosmetic.

When To Do It

Removing wallpaper left damage. Knock-down or popcorn texture you hate. Old plaster with hairline cracks.

New construction rarely needs it. Existing homes often do.

The Compound

All-purpose joint compound works. Pre-mixed is easier. Powder type for those who want control.

Thin it slightly. Should spread easily. Too thick leaves ridges.

Tools

Wide drywall knife. 12-inch minimum. Bigger is actually easier.

Magic trowel for large areas. Roller to apply, knife to smooth. Faster coverage.

Technique

Apply thin coat. Let dry completely. Sand lightly. Apply second coat. Repeat as needed.

Crosshatch pattern. First coat horizontal. Second coat vertical. Fills low spots.

Sanding

Wear mask. Drywall dust is nasty. Pole sander for walls. 120-grit.

Prime after sanding. Don’t skip. Primer seals the compound.

Difficulty

Not hard but takes practice. First wall won’t be perfect. Gets easier with experience.

Work in sections. Don’t try whole room at once. Learn on closet first.

Sarah Collins

Sarah Collins

Author & Expert

Sarah Collins is a licensed real estate professional and interior design consultant with 15 years of experience helping homeowners create beautiful living spaces. She specializes in home staging, renovation planning, and design trends.

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