How to Replace an Exterior Door Sweep

A worn door sweep leaves a visible gap at the bottom of an exterior door and can let in drafts, insects, and dirt. Replacement is usually straightforward if the door itself is in good shape.

Tools you will probably need

• screwdriver
• tape measure
• hacksaw or snips if trimming is required

Materials

• replacement door sweep sized to the door

Project steps

1. Measure the door width and identify how the current sweep is attached.
2. Remove the old sweep and clean the bottom edge of the door.
3. Trim the replacement to length if necessary.
4. Install it so the flexible edge contacts the threshold without dragging heavily.

Common mistakes

• Buying a sweep that does not fit the door thickness
• Installing it so low that the door becomes hard to move
• Trying to fix a rotten door bottom with a new sweep

When to call someone

Seek repair help if the lower door is rotten, swollen, or damaged, or if the threshold itself needs rebuilding.

Project costs and times are rough planning estimates. Product instructions, local codes, home construction, and actual conditions take priority.