Threshold flashing requirements


Something tells me that this plate will be worse for wear in the next decade or so. It’s placed directly on top of concrete and I don’t see any means of flashing or water protection at the base. There is no awning or roof overhead either. Any criticism on this would be greatly appreciated. The concrete is properly sloped.

We don’t predict the future. Is it functioning, now, as it should?

[quote="Joshua Price, post:1, topic:243992, username:jprice25”]
It’s placed directly on top of concrete and I don’t see any means of flashing or water protection at the base.
[/quote]

Is it treated wood? You can recommend sealing the joints against water and insect, etc. intrusion.

[quote="Joshua Price, post:1, topic:243992, username:jprice25”]
The concrete is properly sloped.
[/quote]

Good the slope away is correct.

It’s a door, right? Why did they set it on a board to begin with? It creates a high stepover to get in and out. Usually the vinyl frame door just sits on the concrete. Ours is not to question why, I guess, so long as the board is PT for ground contact, it’s not wrong. Maybe there should be flashing under the door in this case. I would call it out as an unusual install.

You’re overthinking it. Without the “plate” there, all you see is the foundation of the house below the door and the door tracks overhanging the foundation. The “plate” acts as a trim to fill out the space below the door. That’s literally all it does. The “plate” is usually treated wood, shot into the concrete with a ramset, then painted white or w/e color to match the other trim or siding around the door.

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At minimum, I would at least recommend they paint and seal the gaps to keep moisture from getting under the 2x4, and into the flooring.