We're screening and recoating a large gym floor for a local St. Louis private school. Generally, this should be done on an annual basis, for sports courts tend to have a high foot traffic, thus high abrasion to it's finished. This will provide an additional barrier of protection, but will not fix any deeper scratches or dents that have damaged the floor. It will, however, create a greater shine for better reflectivity, which in turn will make the room have better line visibility for athletic play.
Summer is almost here and this is the time to have your gym courts refinished or recoated. Since schools are usually vacated for part of the summer, this is the opportune time to get them repaired also.