Understanding Inner vs. Outer Sweeps
Beltline weatherstripping (also called window sweepers, felts, or fuzzies) consists of TWO separate seals per door:
| Type | Location | Function |
|---|---|---|
| Inner Sweep | Inside the door, against interior trim | Seals glass to interior; prevents interior water damage |
| Outer Sweep | Outside the door, visible from exterior | Wipes debris off glass; primary weather seal |
Important: Metro generally sells these as complete kits only. We do not break up kits because proper sealing requires both inner and outer sweeps working together.
Installation Steps
Tools Needed:
- 7-Piece Trim & Pry Tool Set (GL-30)
- Drill (if riveted)
- 3M Black Weatherstrip Adhesive (GL-11)
- Clean rags
- Nitrile Gloves (GL-10)
Step 1: Remove the Door Panel
Access the inner sweeps by removing the inner door trim panel. Set aside clips for reinstallation.
Step 2: Roll Down the Window Fully
This gives you clear access to both sweeps and prevents scratching the glass during removal.
Step 3: Remove Old Sweeps
For riveted sweeps:
- Drill out the rivets (typically 3 per sweep)
- ⚠️ CAUTION: Work carefully—do NOT break your door glass!
- Remove old sweep and clean the mounting surface
For adhesive-mounted sweeps:
- Carefully peel the old sweep away
- Remove all residual adhesive (see our Surface Preparation Guide)
Step 4: Test Fit New Sweeps
Before applying any adhesive, lay the new sweeps in position. Verify:
- Correct length (trim if necessary)
- Proper orientation (fuzzy/sealing edge contacts glass)
- Smooth alignment with no waves
Step 5: Install New Sweeps
For riveted applications:
- Position sweep and mark hole locations
- Drill pilot holes if needed
- Secure with new rivets
For adhesive applications:
- Apply thin bead of adhesive along mounting surface
- Press sweep firmly into place
- Allow to cure per adhesive instructions before operating window
Installing with Wide Chrome Trim (Camaro, Chevelle, etc.)
On vehicles with wide exterior chrome trim at the beltline:
- The outer sweep often tucks under the chrome trim
- You may need to loosen (not remove) the chrome to slide the sweep into position
- Some kits include specialized moldings designed for this application—verify your part number matches your trim style
- Reinstall/tighten chrome AFTER sweep is positioned
What to Expect
New beltline sweeps may feel slightly stiff initially. After 1-2 weeks of window operation, they'll conform to the glass and provide optimal sealing.