Limestone 101 — Technical Guide
Indiana Limestone Finishes: A Mason’s Visual Guide
Everything you need to know about limestone finishes — from smooth planer to bush hammered. Technical specs, visual examples, and when to use each finish.
Indiana Limestone Fabricators • March 2026 • 12 min read
If you’re a mason, architect, or specifier working with Indiana limestone, you need to know your finishes cold. The finish you choose affects everything — the look, the cost, the installation method, and how the stone performs over time.
This isn’t a beginner’s guide. This is a technical reference for professionals who need to know exactly what they’re specifying.
Let’s get into it.
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The Standard Finishes
Indiana limestone comes in eight standard finishes. Each one is produced using different tools and techniques, and each one serves a specific purpose.
1. SMOOTH (PLANER) FINISH
Production Method: Machine planed with carbide-tipped tools
Surface Characteristics: Perfectly flat, even texture. No visible tool marks. Smooth to the touch but not polished.
Best Applications: Interior walls, column shafts, window surrounds, door frames, interior trim
Cost Factor: Standard (baseline pricing)
Mason’s Note: This is your default finish. Clean, professional, works everywhere. If you don’t specify a finish, this is what you get.
2. HONED FINISH
Production Method: Machine ground and polished with progressively finer abrasives
Surface Characteristics: Smooth, matte sheen. Slightly reflective but not glossy. Silky to the touch.
Best Applications: High-end interiors, countertops, flooring, feature walls, lobbies
Cost Factor: +20-30% over smooth finish
Mason’s Note: More elegant than smooth, less maintenance than polished. Hides scratches better than polished finishes. Excellent for high-traffic interiors.
3. SPLIT FACE (ROCK FACE) FINISH
Production Method: Hydraulically split along natural bedding plane
Surface Characteristics: Rough, natural-looking texture. Irregular surface with 1/2″ to 2″ variation. Looks like freshly quarried stone.
Best Applications: Exterior facades, retaining walls, landscape features, rustic interiors
Cost Factor: Standard to -10% (less labor than smooth)
Mason’s Note: Fast to produce, looks authentic. Great for projects where you want texture and shadow play. Not suitable for precision joints.
4. CHAT SAWN FINISH
Production Method: Gang-sawn with steel shot (chat) used as abrasive
Surface Characteristics: Uniform, slightly granular texture. Fine, consistent surface roughness. Tactile but not coarse.
Best Applications: Exterior walls, paving, steps, pool copings, slip-resistant surfaces
Cost Factor: Standard
Mason’s Note: Excellent slip resistance. Weathers beautifully. Good for horizontal surfaces that see foot traffic.
5. BUSH HAMMERED FINISH
Production Method: Hand or machine pounded with multi-pointed hammer
Surface Characteristics: Dimpled, rough texture. Looks like it was hammered by a mason (because it was). Uniform pattern of small indentations.
Best Applications: Steps, landings, ramps, pool decks, any surface needing maximum slip resistance
Cost Factor: +30-50% over smooth finish (labor intensive)
Mason’s Note: Best slip resistance of any finish. Required by code for some applications. Time-consuming to produce but worth it for safety.
6. BROACHED (TOOLED) FINISH
Production Method: Machine-cut parallel grooves with carbide tools
Surface Characteristics: Parallel vertical or horizontal grooves. Spacing typically 1/4″ to 1/2″. Creates strong shadow lines.
Best Applications: Column shafts, pilasters, accent walls, contemporary facades
Cost Factor: +15-25% over smooth finish
Mason’s Note: Adds visual interest without excessive cost. Can run grooves vertically or horizontally. Hides minor imperfections.
“We developed broached and grooved finishes — like a tweed suit rather than a serge suit. The purpose was to create textures that concrete molds can’t duplicate.”— Fred Barrett, President, Matthews Brothers Inc., 1977
7. PICKED (POINTED) FINISH
Production Method: Hand-chiseled with pointed tools
Surface Characteristics: Irregular pitted texture. Traditional hand-worked appearance. Shows tool marks and mason’s craftsmanship.
Best Applications: Historic restoration, traditional buildings, monuments, classical architecture
Cost Factor: +40-60% over smooth finish (highly skilled labor)
Mason’s Note: Time-honored technique. Used on historic buildings for centuries. Match existing picked work on restoration projects.
8. SANDBLASTED FINISH
Production Method: High-pressure air and abrasive media
Surface Characteristics: Uniform, slightly rough texture. Matte appearance. Consistent surface throughout.
Best Applications: Signage, lettering, custom textures, matching existing work
Cost Factor: +20-30% over smooth finish
Mason’s Note: Versatile finish. Can achieve different depths by adjusting pressure and media. Good for creating contrast with smooth areas.
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How to Choose the Right Finish
Here’s what you need to consider when specifying a finish:
Decision Matrix
For Interiors:
- High-end: Honed
- Standard: Smooth planer
- Contemporary: Broached
- Rustic: Split face
For Exteriors:
- Formal: Smooth planer or honed
- Textured: Chat sawn, broached
- Rustic: Split face, rock face
- Traditional: Picked
For Slip Resistance:
- Maximum: Bush hammered
- High: Chat sawn
- Moderate: Sandblasted, broached
- Minimal: Smooth, honed
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Technical Considerations
Weathering and Maintenance
Different finishes weather differently:
Smooth and Honed: Develop natural patina over time. May show staining more readily. Easy to clean.
Textured Finishes (Split Face, Bush Hammered): Hide staining and weathering. Self-cleaning in rain. Require minimal maintenance.
Tooled Finishes (Broached, Picked): Weather similarly to smooth. Grooves can collect dirt but also shed water efficiently.
Installation Tips by Finish
Smooth finishes: Require tight joints (1/8″ to 1/4″). Shows any misalignment.
Split face: More forgiving. Joints can be 3/8″ to 1/2″. Natural variation hides imperfections.
Bush hammered: Best for horizontal surfaces. Install with slight slope for drainage.
Broached: Pay attention to groove orientation. Usually run vertically for walls, horizontally for bases.
Cost-Saving Strategies
If budget is tight:
- Use smooth finish for majority of work, textured accents strategically
- Split face is actually cheaper than smooth for large areas
- Chat sawn costs the same as smooth but adds visual interest
- Avoid hand finishes (picked, hand bush hammered) unless required
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How to Specify Finishes Correctly
Always specify Indiana limestone finishes using this format:
[COLOR] [GRADE] INDIANA LIMESTONE, [FINISH]
Examples:
• “Buff Standard Indiana Limestone, Smooth Finish”
• “Gray Select Indiana Limestone, Honed Finish”
• “Buff Rustic Indiana Limestone, Split Face Finish”
Never specify:
- “Limestone, finished” — too vague
- “Smooth limestone” — missing color and grade
- “Natural finish” — meaningless term
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The Bottom Line
Indiana limestone finishes aren’t decorative choices — they’re functional decisions that affect cost, installation, performance, and maintenance.
Know your finishes. Specify them correctly. Match the finish to the application.
And when in doubt, smooth planer finish works 90% of the time.
Need Help Specifying Indiana Limestone?
Indiana Limestone Fabricators can produce any finish — standard or custom — to your exact specifications.
Get a Quote →Topics: Indiana Limestone Finishes • Stone Fabrication • Smooth Planer • Split Face • Bush Hammered • Honed Finish • Chat Sawn • Broached • Limestone Specification • Stone Doc • Limestone 101