Wood Floor Refinishing Cost Calculator

Refinishing runs about $3 to $8 per square foot depending on how much sanding the floor needs, the finish, and the floor's condition. A full sand and refinish of a 600-sq-ft main floor with oil-based polyurethane in fair condition typically lands around $2,500 to $3,500. A screen and recoat — a light buff and one fresh coat on a floor still in good shape — is much cheaper at $1 to $2.50/sq ft, or roughly $600 to $1,500 for that same 600 sq ft. Stair treads add $25 to $40 each, and staining, gap filling, and board repair add more. A minimum job charge (about $400) applies to very small rooms.

It comes down to the condition of your existing finish. A screen and recoat (buff and coat) lightly abrades the current finish with a screen pad — no wood is removed — then adds one or two new coats on top. It only works when the finish is uniformly worn but intact, with no bare spots, deep scratches, or stains that reached the wood. A quick test: sprinkle water on the floor; if it beads rather than soaks in, the finish is intact enough for a recoat. A full sand uses a drum sander in three passes (coarse, medium, fine) to strip everything down to bare wood — the standard for floors with real wear, scratches, discoloration, or peeling, and the only route if you want to change the stain color.

Solid hardwood (typically 3/4-inch) can usually be refinished 5 to 10 times over its life, since each full sand removes only about 1/32 to 1/16 inch. Engineered hardwood can be refinished 1 to 3 times depending on its wear layer — you want at least 2mm (ideally 3 to 4mm) above the tongue for a full sand; a thin veneer may only tolerate a screen and recoat. Laminate cannot be refinished at all — it's a printed photo layer over fiberboard with no real wood to sand. If you can see tongue-and-groove edges at a floor vent, you likely have solid hardwood. When in doubt, have a refinisher check a board at a threshold or register before booking.

Both are excellent; the choice is about color, dry time, and fumes. Oil-based poly is the long-standing standard — very durable (about 7 to 10 years between recoats), and it adds a warm amber tone that suits oak and traditional looks. The downsides are strong fumes and slow drying (24+ hours per coat), so a job takes several days and you'll want to vacate. Water-based poly dries in 2 to 4 hours per coat, is nearly odorless, and stays crystal clear — ideal for maple, ash, and light or gray-toned floors where amber would clash. It costs a bit more and modern formulas are nearly as durable (about 5 to 7 years). Hard wax oil and conversion varnish are premium alternatives the calculator also prices.

Refinish whenever the floor is structurally sound — it's far cheaper at $3 to $8/sq ft versus $8 to $20+/sq ft for new hardwood, and it preserves original character. Replace instead when the boards are sanded so thin that the tongue is starting to show or the floor feels spongy, when more than about 30% of boards have rot, warping, or cupping that won't flatten with sanding, or when the floor is laminate or a thin-veneer engineered product that can't take a sand. Water damage that blackened the wood (through the finish into the grain) and widespread structural gaps also tip toward replacement. For most tired-but-solid floors, refinishing is the clear value.

Condition is a multiplier on the sanding rate because worse floors need more passes, more hand-work at edges, and more prep. Good floors with light, even wear are the base rate. Fair floors with visible scratches, dullness, or minor staining add about 15% for extra passes. Poor floors with deep scratches, pet stains that penetrated, or peeling finish add about 35% for additional sanding and edge hand-work. Damaged floors with gouges, cupping, board gaps, or old paint add about 60% for extensive prep, filling, and possible board replacement before finishing. Being honest about condition when you get quotes keeps the estimate realistic and avoids change-order surprises mid-job.

A standard full sand and refinish takes about 3 to 5 days for a typical home — roughly a day to sand and a day per finish coat, with most jobs getting three coats. With oil-based poly you can't walk on the floor for about 24 hours after each coat, and you should keep furniture and rugs off for several days after the final coat. Water-based finishes speed things up: light sock-foot traffic often in 24 hours and furniture back in about 48. As a rule, wait roughly 24 hours for socks-only, 48 to 72 hours for normal traffic, and 5 to 7 days before replacing area rugs — putting rugs down too early traps moisture and can ruin the finish's adhesion.

Yes — staining happens after the bare-wood sanding and before the finish coats, so a full sand lets you go darker (oak to espresso or walnut) or lighter (whitewash or gray), though going much lighter can require aggressive sanding or bleaching on some species. Staining adds about $1/sq ft. To prep for any refinishing job, clear all furniture, rugs, and floor vents, take down or cover wall art (sanding dust is very fine and travels), and seal off adjacent rooms with plastic if you want to limit dust — though most pros now use dustless systems that capture the vast majority. Remove pets and plants for the duration, and flag any squeaky boards, loose planks, or popped nails so they're fixed before sanding.