Signs your floors need refinishing, repair or replacement

Updated November 11, 2026 · KeystoneProGuide editorial team

How do you know a floor needs work?

Look at the surface, then at what is happening underneath it. A wood floor that is only dull needs far less than one worn to bare wood. Seasonal gaps are normal; gaps that never close are not. Rippling carpet, hollow tiles and soft spots usually point to installation or moisture. And some signs, such as damaged old vinyl or a sagging floor, mean the next call may not be to a flooring contractor at all.

What does worn hardwood look like, and what does it need?

The National Wood Flooring Association (NWFA), the hardwood industry's association, separates three levels of need:

• Dull finish, no damage. The NWFA says floors that start to look dull can be renewed by recoating, a maintenance coat that cleans and lightly abrades the old finish before a fresh coat goes on.
• Deep scratches, dents or bare wood. It recommends a complete sand and refinish when there are deep scratches, dents and other damage, or when the finish has worn away and bare wood is exposed.
• Floors sanded many times. How many times a floor can be sanded depends, the NWFA says, on the contractor's skill, the equipment, the flatness and condition of the floor and the thickness of the wear layer. A floor whose wear layer is nearly gone may be past refinishing.

How a floor is cleaned matters too. The NWFA warns against wet mops and steam mops, which it says damage the finish and the wood over time.

Are gaps and cupping between wood boards a problem?

Sometimes. The NWFA says wood gains moisture and swells in humid conditions and loses it and shrinks in dry ones:

• Gaps or splits that appear and disappear with the seasons are considered normal. Large gaps, or gaps that do not close in humid months, are a reason to call a professional.
• Cupping, where each board's edges sit higher than its center, means the boards have gained moisture. That points to a source of water or humidity, which needs finding before any repair.

The NWFA suggests keeping a home between 60 and 80 degrees Fahrenheit and between 30 and 50 percent humidity all year to reduce both.

What signs in carpet need attention?

The Carpet and Rug Institute (CRI), the carpet industry's association, says several changes after installation are normal: loose fibers shedding, an occasional tuft sprouting above the surface (clip it, do not pull it) and shading in plush carpet, which it calls a characteristic rather than a defect.

Other signs are not normal:

• Wrinkles or ripples. The CRI says these may need professional restretching, and its standard requires carpet to be power-stretched when it is installed.
• Buckling. The CRI lists improper installation, the wrong cushion, moving furniture and high humidity as causes.
• Trouble at the seams. The CRI says the cut edges of both pieces at a seam should be sealed to prevent problems, and that manufacturers specify all carpet seams must be sealed.

A musty smell is different. The U.S. Environmental Protection Agency (EPA) says hidden mold can grow on the underside of carpets and pads, and that porous materials such as carpet may have to be thrown away if they become moldy. Find and fix the water source before replacing anything.

What do hollow, cracked or uneven tiles mean?

Often a problem below the tile. The Ceramic Tile Education Foundation (CTEF), an industry education body, says industry standards call for mortar to cover at least 80 percent of the back of each tile in dry areas and 95 percent in wet ones, and that spot bonding, a shortcut of a few dabs of mortar, most times leads to broken and hollow-sounding tiles. It also says tile needs a flat, rigid base, that all tile installations move with temperature and humidity and need movement joints, and that cracks in concrete should be treated with a crack isolation membrane.

So a cluster of cracked tiles over a concrete slab, or tiles that sound hollow when tapped, are worth having looked at. Start with the installer: the CTEF says an independent third-party inspection, the step it describes for serious disputes, may cost $2,500 to $3,500 a day plus expenses.

When does a floor problem need someone other than a flooring contractor?

• Damaged old vinyl tile or sheet flooring. The EPA lists vinyl floor tiles, sheet backing and adhesives among materials that may contain asbestos. It says material that is more than slightly damaged, or that will be disturbed, needs repair or removal by a trained and accredited professional, and that you should not sweep or vacuum debris that may contain it.
• Sagging, springy or sloping floors. These raise questions about the framing under the floor, which is structural work rather than flooring. Pennsylvania's building code regulation says removing or cutting a structural beam or load-bearing support is not an ordinary repair, so ask your municipality whether a permit is needed before anyone cuts into the framing.
• Recurring water. A floor that keeps cupping or staining has a moisture source a new floor will not fix.

Is a worn floor a safety problem?

It can be, especially for older people. The Centers for Disease Control and Prevention says more than one in four adults aged 65 and older falls each year, and lists broken or uneven steps and throw rugs among the home hazards that raise the risk. The National Institute on Aging advises checking that carpets are fixed firmly to the floor, putting no-slip strips on tile and wood floors and not using throw rugs. Loose carpet on stairs and lifting edges at transitions between floors are signs to fix soon rather than at the next remodel.

If the signs point to work, compare options in the cost guide and check contractors as set out in how to choose a flooring contractor. Businesses are listed on the flooring contractors directory page.

Sources

1. Refinishing Your Floors, National Wood Flooring Association (NWFA)
2. Problem Prevention, National Wood Flooring Association (NWFA)
3. Maintenance, National Wood Flooring Association (NWFA)
4. Installation Tips, The Carpet and Rug Institute (CRI)
5. Frequently Asked Questions, The Carpet and Rug Institute (CRI)
6. The Homeowner's Guide to Hiring a Qualified Tile Installer, Ceramic Tile Education Foundation (CTEF)
7. A Brief Guide to Mold, Moisture and Your Home, U.S. Environmental Protection Agency
8. Protect Your Family from Exposures to Asbestos, U.S. Environmental Protection Agency
9. Facts About Older Adult Falls, Centers for Disease Control and Prevention
10. Preventing Falls at Home: Room by Room, National Institute on Aging
11. 34 Pa. Code § 403.62. Permit requirements and exemptions., Commonwealth of Pennsylvania (Pennsylvania Code)