Best Weatherstripping 2026: Stop Drafts & Save Energy
We tested 18+ weatherstripping products for durability, ease of installation, and draft-stopping power. Here are the best options for doors, windows, and gaps of all sizes.
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Our Top Picks
Why Weatherstripping Matters
Save $100-200/year
Air leaks around doors and windows waste 10-15% of heating/cooling energy.
Stop Cold Drafts
Feel warmer in winter without turning up the heat. Eliminate cold spots near windows.
30-Minute DIY
Most weatherstripping installs in under an hour with basic tools. No pros needed.
Types of Weatherstripping
Foam Tape
Self-adhesive foam strips. Easiest to install but shortest lifespan (1-2 years). Best for windows and interior doors.
V-Strip (Tension Seal)
V-shaped plastic or metal that springs open to fill gaps. Excellent durability. Best for door sides and window channels.
Door Sweeps
Attaches to bottom of door to seal gap with floor. Essential for exterior doors. Available in screw-on and slide-on styles.
Window Film Kits
Plastic shrink film creates insulating air pocket over entire window. Dramatic results but single-season use.
Detailed Reviews
3M Indoor Window Insulator Kit
What We Like
- Dramatically reduces drafts
- Crystal clear when installed
- Easy DIY installation
- Removable in spring
What Could Be Better
- Single-season use
- Can't open windows
- Requires hair dryer
Our Verdict: The most effective draft stopper for windows. Creates an insulating air pocket that can cut heat loss by 50%. Essential for older single-pane windows.
M-D Building Products Door Sweep
What We Like
- Heavy-duty aluminum construction
- Adjustable height
- Works on uneven thresholds
- Professional appearance
What Could Be Better
- Requires screws to install
- May need cutting to fit
- Can drag on carpet
Our Verdict: The best permanent solution for door bottoms. The aluminum frame won't warp like plastic, and the vinyl seal compresses to fit uneven floors.
Duck Brand Heavy-Duty Foam Tape
What We Like
- Very affordable
- Easy peel-and-stick
- Works on irregular gaps
- Multiple thickness options
What Could Be Better
- Compresses over time
- Adhesive can fail in cold
- Not for exterior doors
Our Verdict: Best for quick, cheap fixes on windows and interior doors. Great for renters. Buy the 3/8" thickness for most gaps.
Frost King V-Strip (Bronze)
What We Like
- Lasts decades
- Invisible when installed
- Works on doors and windows
- Self-adjusting tension
What Could Be Better
- Harder to install
- Requires nails or staples
- Bronze can tarnish
Our Verdict: The permanent solution. Bronze V-strip installed in the 1950s is still working today. Worth the extra installation effort for long-term results.
Frost King Slide-On Door Bottom
What We Like
- No screws required
- Slides onto door bottom
- Adjustable seal height
- Works on most doors
What Could Be Better
- Must remove door to install
- May not fit all door thicknesses
- Rubber can harden over time
Our Verdict: Best for DIYers who don't want to drill into their door. The slide-on design makes replacement easy when the seal wears out.
Installation Tips
1. Clean Surfaces First
Remove old weatherstripping, dirt, and debris. Use rubbing alcohol to ensure adhesive sticks. Let dry completely before applying new weatherstripping.
2. Measure Twice, Cut Once
Measure the full length of each gap. Cut weatherstripping slightly longer than needed—you can always trim, but can't add length back.
3. Test the Fit
Weatherstripping should compress slightly when door/window closes but not prevent it from latching. If it's too tight, use thinner material.
4. Install in Warm Weather
Adhesive-backed weatherstripping works best when installed above 50°F. If installing in cold weather, use a hair dryer to warm the surface first.
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