Chip seal markers are typically installed prior to spraying while the center-line stripes are still visible. This avoids having to re-measure lanes. The road surface should be reasonably clean for good adhesion. The bottom of the marker has a self stick pad already on the bottom, so it's just peel and stick. The markers have a clear plastic cover attached with a single staple. With the markers in place, just spray right over them. When the seal coat has had enough time to dry, the formerly clear plastic cover is removed, exposing a clean marker.