Triangular tear (L-tear)

Also: L-tear, corner tear

A triangular or L-shaped tear often comes from sharp rocks or branches. The flap is folded back, backed and then covered.

Alpacka advises backing L-shaped tears first and then sealing them. The corner is the weak point: the patch should overlap particularly generously here. Anfibio describes tears and triangular tears in tube and floor as a typical case for permanent repair with original patches and Helaplast.