The gap at the bottom of an interior door should be 2 inches from an unfinished floor.

Gap under exterior door threshold. A door gap resulting in light under the door or peeking around the edges of the door. Probably a result of adjusting the door in the opening , not enough goop, too big a gap, or whatever. Our exterior front door sits on what was once the house's original front porch.

Older door thresholds often develop gaps that allow water to get inside the house. If you’re wondering what to put under a door threshold to fill the gap, then you can use materials such as grout, cork, rubber, wood or form. Discussion starter · #1 · nov 20, 2012.

If you are planning to install an interior door, the standard gap size between the door and an unfinished floor should be 2 inches. Over a finished floor, the gap should be between ¾ to ½ of an inch, depending on the type of floor you. A drafty door with chilly drafts/air blowing through.

I installed a door in an opening i have under my stairs. The back of the door is sitting on concrete and the front is on my asphalt driveway. How do you fill the gap under the door threshold?

Predrill holes in the threshold 3 inches from either end and one in the middle. Total cost was around $8k and i’d. Cutting a piece of wood as a shim to fill in the hols as much as possible.

Gap under prehung exterior door threshhold. Gap between bottom of exterior door threshold and concrete fix : Even if an exterior door is hung correctly, there is still the possibility of a gap between the bottom and the threshold.