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Fix a draft from door

We'll locate the draft, inspect the weatherstrip and door sweep, and fix or replace the seal—or tell you when to call a pro.

Troubleshooting · Home maintenance
15–45 min
What you'll need
  • Replacement weatherstrip (foam, vinyl, or rubber—match existing type)
  • Door sweep (if the bottom drafts)
  • Screwdriver (if adjusting hinges or door sweep)
  • Damp cloth (for cleaning)
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Steps

Goal: Confirm where the draft enters, then fix the seal.

  • Close the door and run your hand along the top, bottom, and sides. Feel for cold or warm air.
  • Good: You locate the draft. Proceed to Inspect weatherstrip.
  • Bad: No draft felt—may be a different source (window, outlet, attic). See When to get help.

Inspect weatherstrip

Goal: Check the condition of the weatherstrip and door sweep.

  • Look at the weatherstrip around the door—top, sides, and bottom. Check for wear (flattened or compressed), tears, gaps at corners, or missing sections.
  • Check the door sweep on the bottom of the door. It should contact the threshold when closed.
  • Good: You know what needs repair. Proceed to Replace seal or Check door alignment.
  • Bad: Unsure—clean and reseat loose strips first, then replace if needed.

Replace seal

Goal: Remove old weatherstrip or door sweep and install new.

  • Remove the old weatherstrip by pulling it from the channel or peeling adhesive-backed strips. Take a sample to a hardware store to match type and size.
  • If the door sweep is worn or missing, remove it and install a new one (measure the door width). Adjust the sweep height so it seals without dragging.
  • Install new weatherstrip—press adhesive-backed strips firmly; for channel strips, start at one end and work along the length. Cut to fit at corners.
  • Good: Continuous seal with no gaps. Test for drafts.
  • Bad: Strip or sweep will not stay—check for channel damage or call a pro.

Check door alignment

Goal: Confirm the door compresses the weatherstrip when closed.

  • Open the door and lift up on the handle—if the door moves, hinges are loose. Tighten hinge screws.
  • Check the gap between the door and frame when closed; it should be even on all sides. If the door sags, shim the hinges.
  • Good: Door closes evenly and compresses the weatherstrip. Test for drafts.
  • Bad: Door or frame is warped—call a carpenter or handyman.

When to get help

Call a carpenter or handyman if:

  • The door or frame is warped.
  • You have replaced the weatherstrip and door sweep and it still drafts.
  • The door is heavy commercial-grade.

Verification

  • No drafts felt when you run your hand along the top, bottom, and sides of the door.
  • Weatherstrip is flush against the frame with no gaps.
  • Door sweep contacts the threshold when the door is closed.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm symptom Locate where drafts enter—top, bottom, or sides.
  2. Inspect weatherstrip and door sweep Check for wear, tears, gaps, or missing sweep.
  3. Reseat or replace Clean, reseat loose strips, or replace worn weatherstrip and door sweep.
  4. Check door alignment Tighten hinges or shim if the door does not compress the seal.
  5. Call a pro Warped door or frame, or fixes did not work—call a carpenter or handyman.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Draft location (top, bottom, sides)
  • Weatherstrip and door sweep condition
  • Whether the door is aligned
  • Steps already tried

Do you feel drafts at the door?

Run your hand along the top, bottom, and sides when the door is closed. On a windy day, hold a lit candle or incense near the edges.

Close the door. Run your hand along the perimeter. Feel for cold or warm air. Good: you locate the draft. Bad: no draft felt—may be a different source (window, outlet, attic).

Yes No

You can change your answer later.

Is the weatherstrip worn or the door sweep missing?

Check the weatherstrip around the door. Check the door sweep at the bottom.

Inspect the weatherstrip for wear, tears, or gaps. Check the door sweep at the bottom—worn or missing lets air in. Worn or missing: proceed to replace. Good condition: check for loose strips or door alignment.

Yes No

You can change your answer later.

Replace weatherstrip or door sweep

Remove old strips or sweep. Install new weatherstrip or door sweep.

Remove old weatherstrip or door sweep. Install new strips or sweep per the product instructions. Adjust door sweep height so it seals without dragging. Good: draft reduced or gone. Bad: still drafts—check door alignment or call a pro.

Done

Reseat loose weatherstrip

Press loose strips back into the channel. Clean and reattach adhesive-backed strips.

Press loose weatherstrip back into the channel. Clean the surface and reattach adhesive-backed strips. Good: seal restored. Bad: strip will not stay—replace it.

Done

Call a carpenter or handyman

Call a carpenter or handyman if: the draft is not at the door (check windows, outlets, attic); the door or frame is warped; you have replaced weatherstrip and door sweep and it still drafts; or the door is heavy commercial-grade.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why does a door let drafts in?
Common causes: worn or compressed weatherstrip, torn or missing strips, a worn or missing door sweep at the bottom, gaps at corners, or a misaligned door that does not compress the seal. Check the weatherstrip and door sweep first.
Can I fix a draft from a door myself?
Yes. Most drafts are fixed by cleaning, reseating, or replacing the weatherstrip and door sweep. You can buy foam, vinyl, or rubber weatherstrip at hardware stores. If the door or frame is warped, call a pro.
When should I call a pro for a draft from a door?
Call a carpenter or handyman if the door or frame is warped, you have replaced the weatherstrip and door sweep and it still drafts, or the door is heavy commercial-grade. Structural issues may require frame adjustment or door replacement.

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