I have a outside shop door opening that is oversized—4X7 feet. I am thinking about building a custom board and batten door from kiln dried 2X6 fir and painting it. If I create a shiplap joint between the pieces and glue them will it tear apart as the door shrinks and swells in the weather? I live in Oregon west of the Cascades so it is very moist in the winter.
Thanks for any input.
Fred