Floor Care · Guide
A wood gym floor is one of the most valuable surfaces a school or facility owns, and the most expensive to ruin with the wrong care. The good news: most of the time it does not need sanding, it needs recoating. Knowing the difference is what keeps a maple floor lasting decades.
A sport-floor finish (oil-modified or waterborne polyurethane over maple) is a coating, and like any coating it is maintained by cleaning and recoating, not by wet-stripping and waxing. Day to day that means dust mopping and an approved auto-scrub or tack routine; once a year, a screen-and-recoat refreshes the finish before it wears through. This is the same logic as commercial hardwood care, scaled to a sport surface.
| Screen-and-recoat | Full sand-and-refinish | |
|---|---|---|
| For | Finish worn on top but intact | Worn-through, water damage, deep scratches, dead finish |
| Work | Abrade (screen) and add 1 to 2 fresh coats | Sand to bare maple, repaint lines, rebuild finish |
| Frequency | Often annually | Many years apart |
| Downtime | Days | One to two weeks-plus |
| Cost | Much lower | Highest |
Recoating on schedule is what pushes the costly full sand far into the future. Skip recoats and you reach bare wood faster, forcing a sand.
A full sand also resets the canvas for repainting game lines and center-court logos.
Sport floors use oil-modified or waterborne polyurethane; waterborne cures faster with less odor, oil-modified ambers over time, both are maintained by recoating. Game lines and logos are painted and sealed under finish during a refinish. Above all, moisture is the enemy of a wood gym floor: leaks, wet mopping, and humidity swings cause cupping and finish failure, which is why cleaning is low-moisture and humidity should be controlled. See gym and sport floor care for how we service it.
Related: gym and sport floor care, commercial hardwood, buffing and burnishing, and maintenance programs.
Have a gym floor due for service? See gym floor care or get a free assessment.
Most wood gym floors are screen-and-recoated annually, often over summer, with a full sand-and-refinish only every several years when the finish has worn through or been damaged.
Screen-and-recoat abrades the existing finish and adds fresh coats without sanding to bare wood; a full refinish sands to bare maple, repaints lines, and rebuilds the finish.
A screen-and-recoat is typically a few days including cure; a full sand-and-refinish can take one to two weeks or more, which is why it is scheduled over breaks.
Yes, that is exactly what a screen-and-recoat is, and it is the routine maintenance that keeps a full sand years away.
Oil-modified or waterborne polyurethane over maple. Waterborne cures faster with lower odor; both are maintained by recoating, not waxing.
Dust mop frequently and clean with an approved low-moisture method. Avoid wet mopping and control humidity, since moisture cups wood and fails finish.
Game lines and logos are repainted and sealed under the finish during a full sand-and-refinish, and can be added or changed at that time.
Almost always moisture, a leak, wet cleaning, or humidity swings. Address the moisture source; minor cases may recoat, severe cupping needs board work and refinishing.
Tell us your facility, floor types, and square footage. We'll scope the work and send a written quote. Not sure what you have? Send a photo and we'll tell you.