Read the substrate first
New and aged asphalt behave differently. Open texture can consume coating and leave ragged edges, while a dense or previously sealed surface may need a different preparation method. Record repairs, fretting, depressions and drainage problems before measuring lines.
Do not paint over movement
A line coating cannot stabilise cracking, loose aggregate or a failing base. Mark defects on the survey, decide which need repair, and allow repaired areas to settle or cure as required. Painting first creates a clean line over an unresolved failure.
Check moisture and forecast
A dry-looking top surface may still hold moisture after rain or washing. Follow product conditions for substrate dryness, air temperature, surface temperature and forecast. Protect the area from traffic and unexpected irrigation during the curing window.
Use a representative test area
Choose a patch with the same texture and old coating as the main work, not the cleanest corner. The test should confirm absorption, edge control, colour and adhesion. Recalculate quantity if the actual substrate consumes more material than the planning assumption.