Screen and Recoat vs Full Refinish
Whether a worn floor needs a recoat or a full refinish depends on how far the wear has gone and on what is on the surface. This article explains why finishes wear, what the sources say separates the two jobs, and why a recoat can fail. The service page for the lighter job is screen and recoat, and the full sequence is on the whole refinishing process page.
Why finishes wear down
Bona, a floor-care manufacturer, says a floor's finish is slowly worn down by daily wear (Bona, as of 2026). A wood-floor publication from Purdue and the U.S. Forest Service's Forest Products Laboratory says finishes are best renewed when signs of wear begin to show in the traffic channels (USDA Forest Products Laboratory, 1980). The National Wood Flooring Association (NWFA) says the less sheen a finish has, the less small scratches and other normal wear are noticed, and it advises felt pads under furniture and avoiding cleats and high heels (NWFA, as of 2026). The aftercare article collects NWFA's advice on protecting a finish.
Signs that point to a recoat, and signs that point to a refinish
The sources do not give a formula. They give signs, and the signs sort into two groups.
| Sign | Points toward | Source |
|---|---|---|
| The finish looks dull, but the wood is covered | A recoat | NWFA says dull floors can be renewed through recoating (NWFA, Maintenance, as of 2026) |
| Wear is showing in the traffic channels, but no bare wood shows | A recoat | The 1980 USDA publication says finishes are best renewed at this stage |
| Routine upkeep of a sound finish | A recoat | Bona calls recoating excellent preventative maintenance (Bona, as of 2026) |
| Deep scratches, dents or other damage to the wood | A refinish | NWFA recommends a complete sand and refinish (NWFA, Refinishing Your Floors, as of 2026) |
| The finish has worn away and bare wood shows | A refinish | NWFA; Bona says bare wood left unmaintained eventually requires a complete refinish (Bona, as of 2026) |
| Major scratches or gouges, sun fading, stains that will not come out, or water damage | A refinish | Bona's list of signs, which says water damage should be assessed as minor or major first (Bona, as of 2026) |
| A wish to change the color | A refinish | NWFA ties a color change to sanding back to raw wood |
| A new coat has not met the needs of the floor | A resand | NWFA says a resand may be in order |
A floor can show signs from both groups. The rule of thumb in the 1980 publication is to renew the finish before bare wood is exposed, and the NWFA and Bona statements point the same way: the further wear has gone, the closer the job moves to sanding.
The three levels Bona describes
Bona describes polishing, which adds a new layer over the existing finish, recoating, in which a buffer lightly scuffs the finish before a new coat goes on, and refinishing, which completely removes the existing finish. A separate Bona page lists timings for what it calls "revive," "recoat" and "refinish": revive ready in a few hours, recoat ready overnight, and refinish ready in 2-4 days (Bona, as of 2026). That page's terms do not map exactly onto "polishing," "recoating" and "refinishing" above; Bona uses different labels on different pages for similar treatments. Those timings are Bona's claims for its own systems, and they say nothing about the sign a floor is showing. Sanding to bare wood is covered on the floor sanding page.
Why a new coat can fail to bond
A recoat puts new finish over old, so the old surface decides whether the new coat holds. The sources name several things to check:
- Wax, polish and oily residues. Bona's data sheet for Traffic HD says a floor being recoated must be free of wax, polish and oily residues, or adhesion failure can occur (Bona data sheet, 05/27/2026). The 1980 USDA publication says wax may interfere with the drying and adhesion of any new finish.
- The condition of the old finish. Minwax's data sheet for its oil-based floor finish says a previously finished floor should be in good condition, with no chipping, peeling, worn areas or residue, and is sanded lightly with 120 grit before recoating (Minwax data sheet, Rev. 1, 1/30/2026).
- Timing between coats. Bona's sheet says abrading between coats is not needed unless more than 48 hours have passed, and then calls for 180-240 grit. Minwax's water-based sheet asks for at least 2 hours but less than 8 hours between coats, and otherwise a light sanding with 220 grit (data sheets, 2026).
- Preparation. NWFA describes a maintenance coat as cleaning the finish, lightly sanding it and applying a fresh coat, and Bona's professional recoat page lists cleaning, abrading with 240 grit and applying the finish within 2 hours (NWFA and Bona, as of 2026).
NWFA advises a cleaner made specifically for the finish on the floor for routine cleaning (NWFA, Maintenance, as of 2026), but it does not say whether other products leave a residue that would affect a recoat. Nothing in these sources says how a floor with an unknown history should be tested. That question belongs with whoever prepares the quote, and it is worth asking how the old finish will be checked.
How often
NWFA says individual maintenance schedules vary with use, wear and tear, and lifestyle, and it gives no schedule for recoating or refinishing (NWFA, Maintenance, as of 2026). Bona's professional page says that every few years floors can be recoated, which is Bona's framing and not a general rule (Bona, as of 2026). No number of years appears on this site as a recommendation.
Questions worth asking
- Does the finish still cover the wood everywhere, or has it worn through in places?
- How will the existing finish be checked for wax, polish or an oily residue before a recoat?
- Which finish goes on, and does its data sheet allow a recoat over the existing finish?
- Is a change of color wanted? If so, a recoat will not deliver it.
- If a recoat is chosen and does not meet the floor's needs, what would a resand involve?