Marble Flooring Cost and Installation Guide

Marble floors cost more than many other materials, and the tile is only part of the bill. This guide explains what drives the price, how to work out how much tile to order, and what a good installation involves. It does not quote installer rates, because those change by region and job.

What affects the cost of a marble floor

  1. The tile itself. The stone, the grade, the finish, the size and whether it is a field tile or a mosaic all change the price per square foot. Rarer stones with bold veining, such as Calacatta, cost more than common ones. Mosaics usually cost more per square foot than field tile because they take more work to make.
  2. Trim and accessories. Baseboard, pencil trim, stair nosing and thresholds are priced per piece or per linear foot. Our trim guide shows what you may need.
  3. Waste. You must buy extra tile for cuts and breakage. See below.
  4. Setting materials. Thinset mortar, grout, sealer, and underlayment or waterproofing for wet areas.
  5. Subfloor preparation. A floor that is not flat, or that flexes, needs work before tile goes down. This can be a large part of a budget.
  6. Labor. Marble takes more skill and time to install than many tiles. Rates vary by region and by pattern. Get several quotes.
  7. Delivery. Stone is heavy. Shipping is free on every Tilefornia order, and large orders go by freight. See the shipping policy.

You can see current prices on each product page. We do not guess at installed costs here, because they depend on your project.

How much tile to order

Measure each room's length and width in feet and multiply to get square feet. Add the rooms together. Then add extra for waste:

  • Straight layout: about 10 percent
  • Diagonal, herringbone or patterned layout: about 15 percent
  • Small or irregular rooms: a little more, because more cuts are needed

Buy a little extra on top for future repairs, since stone from a later lot may not match exactly. Our tile calculator does the math for you.

Also check how the tile is sold: by the square foot, the piece or the box. Mosaic sheets cover a set area. The product page gives the coverage.

What a good installation involves

Marble is a natural stone and is less forgiving than some tile. Ask your installer how they will handle each step. In general:

  1. Check the subfloor. It should be clean, flat and stiff. Flexing floors can crack stone tile. Your installer should check flatness and may need to level or reinforce the floor.
  2. Plan the layout. Dry-lay tiles, mix tiles from several boxes, and center the pattern so cuts at the edges are not tiny slivers.
  3. Choose the right mortar. Large tiles generally need a medium-bed mortar and a flat setting bed. White or light marble is often set with white mortar, because gray mortar can show through and darken the stone.
  4. Back-butter large tiles to get full contact under the tile.
  5. Keep joints consistent. Use spacers. Marble tile is often set with narrow joints, and the right grout depends on the width and finish. Ask your installer to pick a grout that will not scratch your finish.
  6. Seal. Seal the tile before grouting and the grout after it cures. See our guide to sealing marble.
  7. Wet areas need waterproofing. For showers and bathroom floors, use a waterproofing system under the tile.
  8. Let it cure before heavy use.

Installation methods vary with the product and the building. Always follow the manufacturer's instructions for the mortar, grout and sealer, and the advice of a qualified installer.

Common mistakes

  • Ordering exactly the measured area, with no waste allowance
  • Mixing tile from different lots without checking the color
  • Skipping subfloor prep
  • Using acidic cleaners on the finished floor
  • Not sealing, or sealing over a wet floor
  • Choosing a polished finish for a wet, high-traffic floor where more grip would help

Which marble for a floor?

Honed and tumbled finishes are common choices for floors, because they are less slippery and hide scratches better than polished. Polished suits walls and dry areas. Look at marble tile or Calacatta Gold, and see our finishes page.

Common questions

Is marble flooring expensive? It generally costs more than ceramic or porcelain, and the price varies a lot by stone and format. Check product prices and get an installer quote.

How much extra marble tile should I order? About 10 percent for a straight layout and about 15 percent for diagonal or herringbone, plus a few spares.

Can I install marble myself? Some experienced DIYers do, but the stone is heavy, expensive and unforgiving. Consider a professional, especially for large tile or wet areas.

Does marble work with underfloor heating? Many stone floors do, but follow the heating system maker's instructions, and ask your installer.

What does sealing cost? A sealer is a small part of the budget. See the sealing guide for how to choose one.

Get a quote and a sample

Use our tile calculator to estimate quantity, order a sample to confirm color, or ask for a project quote. Shipping is free on every order, and large orders go by freight.

General guidance only. Prices, products and installation requirements vary. Follow product instructions and local building codes.

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