PANEL LAYOUT AND ATTACHMENTS / FIELD NOTE 18

Seam Kink Angle on Curved Aluminum Facades

Adjacent panels can meet at the intended gap and still change slope abruptly across the seam. That change can show up in reflected highlights, especially on glossy finishes.

Juchang technical editorial ·

Review checkpoints: Joint gap → Change in slope → Viewing check
Review checkpoints: Joint gap → Change in slope → Viewing check.

What to check on your project

Review sections across critical joints and identify where visual continuity matters. Ask for the project's permitted angular change, measurement basis and representative lighting conditions. Include both gap width and angle in the mock-up review.

Worked example

Imagine two panels whose edges are 12 mm apart. If both surfaces slope similarly near the edges, a highlight can move smoothly across the joint. If the second surface tilts abruptly, the same 12 mm gap can read as a ridge. The dimensions are illustrative and the acceptable angle is project specific.

Further technical reading

Related field note

Joint Width Along a Double-Curved Surface ↗