Chalk Test

1. Lightly and evenly spray the sheet metal sealing surface of the door and body with a tracing powder (chalk spray).

2. Gently close the door, applying pressure only at the latch to prevent overslam (which will give an inaccurate reading).

3. Open the door and inspect the seals for degree of compression and possible skips.

To provide adequate sealing contact, the weatherstrip-to-sheet metal contact should provide a tracing powder footprint width of 4-6 mm on the weatherstrips. Any skips or tracing powder footprints less than 3mm in width indicate insufficient door-to-weatherstrip sealing contact and the door should be adjusted to increase the sealing contact.