Install and Adjust Coped Joint

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1:03

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Coping inside corners

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What happens here

Once the coping is complete, slide the coped piece of baseboard into place, fitting its newly cut profile against the square-cut piece already installed in the corner. The coped joint should interlock seamlessly, creating a tight and clean inside corner. The video highlights the forgiving nature of a coped joint, showing how the piece can be moved slightly without creating a visible gap in the joint, making it ideal for walls that are not perfectly square.

Goal: Achieve a tight and forgiving inside corner joint

Tools and materials

Coped Baseboard Piece — The finished piece of trim ready for installation
Square-cut Baseboard Piece — The already installed trim that the coped piece will butt against

What they say

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Or you can cut the whole thing with your coping saw. You're back cutting the material behind this finished edge and that leaves the front profile able to make contact. Now, slide that piece into your square piece. Miters can absolutely work, but cope joint is more forgiving. See how far I can move this piece out from the wall and it still lines up. Square one cut, 45 the other, follow the profile, back cut with your coping saw, and then you're done. Anyways, I got stuff to do. I'll catch you guys later.

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