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Sedimentary Stone

Warm, elegant, and time-honored — the building material of cathedrals and manor homes.

Limestone is a sedimentary rock formed primarily from the skeletal fragments of marine organisms — corals, foraminifera, mollusks. It has been the world's most widely used building stone for 5,000 years, forming the foundation of Gothic cathedrals, the Pyramids of Giza, and the Empire State Building's lower stories.

3–4Mohs hardness
1.1%Water absorption
GoodFreeze-thaw
$8–18 / sq ftTypical cost range
Technical Specifications

By the numbers

Mohs hardness 3–4
Water absorption 1.1%
Freeze-thaw Good — dense grades
Density 2.55 g/cm³
Applications Facade, paving, dimension stone
Cost range $8–18 / sq ft
Finishes Available

Surface options

Honed

Matte, flat surface. The most common finish for limestone floors and walls. Warm and soft in character.

Sandblasted

Rough texture for exterior paving and pool copings. Excellent slip resistance.

Tumbled

Aged, worn appearance. Good for informal exterior applications — gardens, paths.

Bush-hammered

Textured by impact tool — very rough surface. Architectural facade and paving applications.

Evaluation

Pros & cons

Advantages

  • ✓ Timeless, warm character — used for 5,000 years
  • ✓ Available in soft buff, cream, and grey tones
  • ✓ Excellent for exterior facades (dense grades)
  • ✓ Natural fossil inclusions add unique character
  • ✓ Carves beautifully for architectural details
  • ✓ Mid-range price point

Considerations

  • – Acid-sensitive — etches with wine, citrus, and cleaning chemicals
  • – Softer grades vulnerable to scratching and weathering
  • – Requires annual sealing
  • – Not suitable for pool chemical environments
  • – Harder to source consistent color in large quantities vs. granite
Frequently Asked Questions

Limestone — common questions

Limestone is a sedimentary rock formed from marine fossils; marble is metamorphic limestone that has been recrystallized under heat and pressure. Marble is harder (Mohs 3–4 vs limestone's 3–4, but marble's crystal structure is denser), has more dramatic veining, and a brighter palette. Limestone is more muted, warmer, and often has visible fossil inclusions. Both are acid-sensitive.
Yes — many limestone grades are excellent for exterior use. Dense limestone grades (Indiana Limestone, Leuders Texas Limestone, Portuguese Limestone) have good freeze-thaw performance when properly sealed. Avoid soft or porous grades outdoors in freeze-thaw climates. For pool areas, use travertine or quartzite rather than limestone — pool chemicals accelerate degradation.
Indiana Limestone (Bedford, IN) is one of America's most celebrated building stones — a buff-colored, fine-grained limestone quarried from the Salem Limestone formation. It appears on the Empire State Building, the Pentagon, the National Cathedral, and thousands of Midwestern buildings. It's known for ease of carving, consistent color, and decades of weather performance.
Limestone typically has a warm buff, beige, cream, or grey color. Look for subtle fossil impressions (shells, crinoids) in cross-section. It has a fine to medium grain with little visible crystalline structure (unlike marble). Touch a drop of acid (vinegar) to a hidden spot — limestone will fizz, confirming carbonate composition. The fizz test is the classic field identification method.
Limestone flooring runs $8–$18/sq ft for the material. Budget grades (Turkish or Portuguese honed limestone) start around $8–$12/sq ft. Premium domestic grades (French Limestone, Indiana Limestone pavers) can reach $20–$30/sq ft. Installed, expect $18–$40/sq ft including material, setting, and grouting.
Care Guide

How to Seal and Care for Limestone Floors

Step-by-step guide to sealing new limestone and maintaining it for decades.

1

Clean before sealing

New limestone may have grout haze, installation residue, or factory treatments. Clean with a stone-safe cleaner appropriate for new stone. Allow to dry completely (24–48 hours) — sealer cannot penetrate damp stone.

2

Apply penetrating sealer

Apply a premium impregnating sealer (Tenax, Lithofin, or similar) to dry stone with a brush, sponge, or cloth. Work in small sections. Allow 10–15 minutes of dwell time.

3

Wipe excess sealer

Before the sealer dries, wipe off all excess with a clean dry cloth. Sealer left on the surface will dry hazy and is very difficult to remove. Multiple thin coats are better than one heavy coat.

4

Cure and test

Allow 24 hours before foot traffic; 48–72 hours for full cure. After curing, test with water drops — the beads should hold for at least 5 minutes before absorbing. Re-seal if water absorbs in under 4 minutes.

5

Annual maintenance

Re-seal annually or when the water-drop test fails. For high-traffic commercial limestone floors, crystallization (a chemical hardening treatment) can extend the interval between polishing and extend the surface life significantly.

Compare

How Limestone compares

Marble vs Limestone Side-by-side comparison Travertine vs Limestone Side-by-side comparison Limestone vs Granite Side-by-side comparison Limestone vs Quartzite Side-by-side comparison
Applications

Where Limestone excels

Patios & Terraces Material guide & how-to Building Facades Material guide & how-to Walkways & Paths Material guide & how-to Landscape Coping Material guide & how-to
Pricing

Limestone price guide

Typical material cost
$8–18 / sq ft / sq ft

The full Limestone price guide covers material vs. installed costs, regional pricing across all 6 US regions and Canada, format-specific breakdowns, and the top cost drivers for your project.

Full Limestone price guide →

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All stone guides

Marble Guide Properties, care & pricing Travertine Guide Properties, care & pricing Granite Guide Properties, care & pricing Quartzite Guide Properties, care & pricing