Pocket hole screws vs. dowels on a deck repair, my joint failed 9 months later

I did a stringer replacement on a porch in Tacoma last spring and decided to try pocket holes for the stair stringer to rim joist connection instead of my usual through-bolts and glue. I mean, the pocket hole jig was right there and it felt faster, plus the angle was tight. About 9 months later the homeowner called me, one step felt spongy and I found the joint had pulled about a quarter inch. The screws were fine, but the wood fibers around them just gave up under the constant flex. I learned that for anything carrying load like stairs, shear strength matters more than how clean the joint looks. I went back with a 2x4 gusset and carriage bolts, no issues since. Has anyone else had a clever shortcut on structural work come back to bite them, or am I just too stubborn to trust old methods over new ones? What's your line between quick fix and permanent fix on exterior stuff?

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linda_mason8215d ago

Man, you hit it right on the head. The issue isn't the screw itself, it's that wood fibers just don't hold up to repeated back-and-forth movement like that. I've seen the same thing with deck boards using hidden fasteners, they look clean but the second someone puts a heavy table on them, the whole thing starts wiggling. The real line for me is if it's holding weight or if it's just holding things in place. For weight, I go with the old methods every time, bolts, lag screws, or glue plus a gusset, because there's no shortcut for shear strength. You're not stubborn, you learned what a lot of us learn the hard way, that a fast fix just makes a second trip later. And on exterior stuff, moisture makes it worse, so I'd rather spend an extra hour on the first install than go back in the rain.