Tongue and Groove 101

So do you know the difference between "tongue AND groove" and "tongue IN groove" boards? If not, here's the low down on this iconic design.


I recently read somewhere that the latter was incorrect. That there was no such thing as tongue IN groove. But that's actually not true.


The board that most of us are familiar with is tongue AND groove.  It has a groove cut on one side and a tab, or tongue, protruding on the other. Hence the name. Each board has a tongue AND a groove. This tongue and alternating groove mate to one another and form a snug but flexible joint between two boards. It's great for joining pieces that still need to move as they expand and contract with temperature and humidity. Like wall or floor boards.


The less familiar design is tongue IN groove...although many people will use the term incorrectly. Just like its more common cousin, tongue in groove also has a groove, but on two sides. Then an unattached tongue, or a spline, joins them together. It works, but for obvious reasons, it isn't as convenient as the TAG design, and it isn't as widely used.


So if you ever wondered, now you know!



#beautifullyremade #tongueandgroove #woodisgood #downonthefarm