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A draft at the bottom of a door can make a room feel colder even when the thermostat says otherwise. The first step is to locate the gap and measure it with the door both open and closed. A stopper that catches on carpet or prevents the door from latching is the wrong fix.
Quick verdict
For an interior door with a modest gap, a removable slide-on or double-sided fabric stopper is an easy first try. For an exterior entry, choose a weather seal suited to the door and threshold, and keep the latch, fire rating, and building rules in mind. A loose weighted draft snake is easiest to remove but has to be reset after opening.
Who this is for—and when to skip it
Buy it for: A confirmed gap under an interior door where a removable stopper clears the floor throughout the door’s swing.
Skip it when: The draft comes from the side of the frame, the door already seals well, or a stopper makes it harder to latch. For an apartment entry door that needs repair, ask building maintenance to assess the seal before buying an accessory.
How this guide was made: a comparison of draft-stopper types and fit requirements, with ENERGY STAR’s air-leak guidance linked below. It does not claim hands-on testing of individual products.
Which type fits your home?
| Type | Best for | Trade-off |
|---|---|---|
| Weighted fabric snake | Occasional use without adhesive | Needs repositioning |
| Slide-on double-sided | Interior doors opened regularly | Can rub on thick carpet |
| Adhesive sweep | A consistent door-bottom gap | Adhesive can mark a rental door |
| Replacement threshold seal | Purpose-built exterior door repair | May require landlord or building maintenance |
Find the real leak
Feel around the bottom and sides on a windy day, or use a small strip of tissue to identify airflow. A bottom stopper will not fix a gap along the jamb or around a poorly aligned frame. ENERGY STAR recommends identifying air leaks before choosing an air-sealing method.
Measure the sweep path
With the door moving, note the smallest clearance over carpet, tile transitions, and uneven floors. A thick seal that drags may wear quickly or make the door hard to operate. Choose a product whose stated gap range matches the largest opening without creating friction at the tightest point.
Renter-friendly installation
A removable fabric piece or slide-on foam may be preferable in a rental. Test any adhesive on an inconspicuous area and check the tenancy rules before modifying a door. Exterior or fire-rated entry doors may require maintenance approval; do not alter the door in a way that compromises closure or safety.
Plan for cleaning and movement
Fabric stoppers collect dust and pet hair, so a washable cover helps. Plastic and silicone sweeps wipe clean, but some adhesive versions peel near damp floors. Recheck the seal after the first week of use and make sure the door still shuts fully.
Best value
A washable, removable slide-on stopper is the best low-cost first choice for a regularly used interior door with a predictable gap.
When the upgrade earns its price
For a leaky exterior door, the right door sweep or threshold repair is more effective than piling fabric against the gap, but involve building maintenance when needed.
Buying mistakes to avoid
- Buying a stopper before measuring the gap through the full swing.
- Sealing the bottom when the air actually enters at the side jamb.
- Adding a thick sweep that prevents a rated door from closing.
Common questions
Will a draft snake stay in place?
A loose weighted one usually has to be moved after opening the door. Double-sided designs travel with the door if they clear the floor.
Can I put adhesive on an apartment entry door?
Check with building management, especially if it is a fire-rated door, and test finish compatibility first.
Final pick
For an interior door, try a removable stopper sized to the gap and floor. Ask building maintenance to assess an exterior or rated entry door when the seal or threshold needs repair.
Keep comparing with our blackout curtains guide, humidity monitor guide.
Further reading: ENERGY STAR: Locating Air Leaks.