Sealing wood threshold molding against exterior slider

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highup

Will work for food
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How to finish floating wood floor against old style aluminum sliding glass door?
Like this? I figure to drill and plug concrete floor so I can nail a threshold molding down when the floor is finished. I figure best to leave about a quarter inch gap between the wood threshold and the aluminum door, then fill the gap with caulking of some sort. Aluminum sweats and leaks so I know I need do do this as good as I can.......... The red is the poly film.
Sound good?

Threshold gap w poly crop.jpg
 
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