Water under door thresholds.

[Bob Rowlands]

I'm a carpenter since 1973. Unfortunately there are few low cost no cost bandaid solutions that will slow water entry on any building, like a yurt, that has no overhang above the door.

The real solution is a full awning over the entry, and/or storm door with integral frame, caulked and attached to the yurts door frame. Any install needs a qualified carpenter to get it right, imo.

The storm door frame needs to be installed such that the storm doors sweep is contacting the outward facing slope at the bottom of the entry door threshold. If the door doesn't have a thresold with sufficient protrusion, an extension should be added. Preferably the sweep will contact the door well below finished floor level. Driven water can climb depending on force.

If I were installing this, I'd thoroughly caulk the storm door frame to the yurts door frame. Both sides and the top get a big fat bead to where the silicone is oozing out as the storm door frame gets screwed in place. That just might stop water from entering your yurt.

Adding a 5 degree bevel to the bottom of your entry door, and a sweep that contacts the threshold, might help a bit. In a hard driving rain that blows directly at the door you are basically sol without an overhang.

Good luck.