Reply by Tony_S

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Posted on Newel post install, on flooring, or sub flooring?

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1357 posts in 3970 days

#1 posted 11-04-2018 11:28 PM

Tough to understand the configuration of the rest of the railing system from your description.
If there’s no other railing coming off that post at 45 to 90 degrees to hold it securely, with one hanger bolt, it’s eventually going to wobble. Level or not. Those bolts can work fine with a larger posts, but they’re typically not worth a shit for smaller posts with a smaller footprint.
If I was in this situation and couldn’t half lap the post to the side of a joist(looks like you can’t in that position) The post would normally be mounted to a larger steel plate and then the steel plate to the subfloor. Can’t do that with the flooring in place.
Second option if the flooring is in place is to mount the post to a wider piece of shoe and screw the hell out of that to the finished floor. I’m not sure that you’re using a shoe?
Third option would be to turn the job down. lol!

If you are going to try the ‘sure tight’ method alone, I’d at least put two bolts in the bottom of the post, running perpendicular to the connecting handrail and glue it in with PL Premium construction adhesive. Even the sides of the post to the subfloor and hardwood flooring.

-- “Wise men speak because they have something to say; fools because they have to say something.” – Plato

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