Tongue & Groove

Exposed tongue & groove plywood roof sheathing in new design office for Rogers Kranjnak Architects

APA panels have a tongue and groove profile on their two long edges.  This eliminates the need for support (blocking) under adjacent panel edges to prevent them from deflecting independently of each other when load is applied.

The material removed to create the tongue normally reduces the width of the panel by 12.5 mm (1/2″), therefore the net width of tongue and groove panels is typically 1206mm (47-½”).