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Bullnose vs. Square Corners: Corner Bead Options for San Antonio Homes

Comparing bullnose (rounded) and square drywall corners, the corner bead types behind them, and which works best for your San Antonio home.

By SCCI Drywall. Published 2026-10-22.

Key Takeaways

  • Corner bead protects and shapes every outside drywall corner.
  • Bullnose corners are rounded, soft and very common in Texas homes.
  • Square corners give a crisp, modern or traditional look.
  • Paper-faced bead resists cracking better than nailed-on metal bead.

Every outside corner in a home is wrapped with corner bead, a strip that protects the edge and gives it shape. The two main looks are bullnose (rounded) and square. If you've seen softly rounded corners and arches in San Antonio homes, that's bullnose.

Square Corners

Square corners have a sharp 90-degree edge. They suit:

  • Modern and contemporary homes with clean lines
  • Traditional homes with crisp trim details
  • Commercial interiors

Square corners are the simplest to finish and to trim around, but a sharp edge shows dings from vacuums and furniture more easily.

Bullnose Corners

Bullnose corners are rounded. Common radii include 3/4 inch for a soft edge and larger radii for a more pronounced curve. They're popular for:

  • Spanish, Mediterranean and Hill Country styles
  • Homes with arches and curved openings. See curved drywall
  • High-traffic areas and kids' spaces, because rounded edges are gentler and resist chipping

Bullnose needs special corner pieces where it meets the ceiling or where three corners meet, and baseboards and casing need to be cut to fit around the curve.

Types of Corner Bead

  • Metal bead: the traditional option, nailed or screwed on, then covered with compound. It's strong, but fastener-attached bead can crack along the edges when the house moves.
  • Paper-faced metal or composite bead: set in joint compound like tape. It bonds to the wall and is less prone to edge cracking. A favorite of professional finishers.
  • Vinyl bead: won't rust and resists dents; available in square and bullnose shapes.
  • Flexible bead: bends to follow arches and curved walls.

Repairs

Dented or cracked corners are a common repair. Damaged bead is cut out, replaced and refinished to match. Bullnose repairs need matching radius bead to look right. See nail pops, tape bubbles and corner cracks.

Switching Styles in a Remodel

You can change square corners to bullnose or the other way around during a remodel, but it affects trim, baseboards and door casing. Most homeowners keep one corner style throughout the house for consistency. See drywall for remodels.

Which Should You Choose?

  • Want soft, warm, Southwestern character? Bullnose.
  • Want crisp, clean lines? Square.
  • Matching an existing home? Match what's there.

Corners Done Right in San Antonio

SCCI Drywall installs and repairs square and bullnose corners, arches and curved openings. Call (210) 875-0280.

Frequently Asked Questions

What is bullnose drywall?

Drywall finished with rounded corner bead, giving outside corners a soft, curved edge instead of a sharp 90-degree angle.

Do bullnose corners cost more?

Usually a bit, because of special corner pieces and extra trim work around baseboards and casing.

Why does my drywall corner keep cracking?

Movement, impact or bead that's only fastened at the edges are common causes. Paper-faced bead set in compound tends to resist cracking better.

Contact SCCI Drywall

SCCI Drywall serves San Antonio and all of South Texas with drywall installation, drywall repair, remodeling, metal stud framing, light gauge framing and acoustical grid ceiling systems for residential and commercial projects.

Phone: (210) 875-0280

Email: sccidrywall@gmail.com

Hours: Monday through Friday, 7:00 AM to 6:00 PM

Request a free drywall quote