Stair tread movement
I'm building (rebuilding) a set of stairs with solid cherry. The treads are ¾" thick and 11" wide. I've stripped off all the old stairs and am down to a very solid 2x frame. I'm wondering if I'm over obsessing about wood movement. On the one hand, I would like to lock the treads down with adhesive and plugged screws to prevent squeaking, on the other hand I'm worried that the treads will crack over time if I do that. I'm thinking I could glue the whole tread and put a staggered row of screws (probably four) down the center of the tread leaving a ¼" of space under the riser for expansion. I'm comfortable that will allow for movement but may not hold it down tight enough to prevent squeaking. One of my advisors suggested I just lock down the whole thing with glue and screws and not worry about movement. I live inland in Southern California and we don't have a lot of humidity variation here. Does anyone have experience/advice on how to do this?