PSA: Stop using pocket screws for face frames if you're building for damp climates

I used to use pocket screws on every face frame like everyone else, right? Quick and easy, never had an issue. Then about two years ago I did a kitchen remodel down in Charleston near the coast. Six months later the homeowner calls me up, said the joints were separating and the face frames looked all wavy. I drove down there and saw the problem. The humidity had caused the wood to expand and contract way more than normal, and the pocket screws just couldn't handle it. They actually pulled loose from the MDF and particle board panels. I switched to using a Domino joiner with tightbond 3 for that kind of job now. It takes longer but the joints stay solid. Has anyone else run into this with pocket screws in coastal or high moisture areas?

3 comments

3 Comments

jennifer_jenkins8d ago

Charleston's brutal I get it but I did a whole house in the Outer Banks three years ago with pocket screws and it's still tight. I used Titebond III on the joints before driving the screws. The glue bonding is what really holds it, not the screw threads.

the_faith8d ago

@jennifer_jenkins wait wait wait... you meant that glue is doing all the work on a whole house in the Outer Banks? With all that salt air and humidity, I'm honestly shocked it's still holding together after three years. Pocket screws alone are one thing but throwing Titebond III into the mix for every joint sounds like you're playing with fire on a coastal build. Don't get me wrong, I love a good glue-up for furniture and trim work, but the whole house framing? That's a bold move, seriously. How are you not worried about moisture getting in and ruining the glue bond over time?

janarivera8d ago

Glue bonding is what really holds it" - I've actually been thinking about this exact thing with timber frame joints, not pocket screws. @the_faith has a point about moisture though. But here's something nobody's bringing up - Titebond III is technically water resistant enough for exterior use, but what about the micro movement from foundation settling or thermal expansion? That glue line is rigid, and over time the constant flexing might cause it to let go. I've seen it happen on decks where the glued joints failed before the mechanical fasteners did.