A technique used to lock the seams of corrugated metal decking or standing seam roofs. A specialized tool creates a small indentation through multiple layers of sheet metal, locking them tightly without the need for screws or rivets. This method provides shear strength to the deck before a concrete slab is poured over it.
Heard on the job
Go ahead and button punch those deck seams every two feet so they don't shift when we pour.
Related terms
Standing seam
A metal roofing system where continuous panels are joined by raised interlocking seams.
Subdeck
The structural layer installed directly over joists to support the final walking surface.
Punch
A heavy steel or timber block placed on top of a pile to protect it while driving it into the ground.