Macro detail of a windshield seal seating on the body edge
A well-chosen profile ensures watertightness, quietness, and a clean finish.

What we mean by glazing trim for windows and glass

A set of profiles, seals, and guides that seal, guide, or finish the junction between the glass and the bodywork or frame: windshield, rear window, sliding/hinged windows, and doors. The most common materials are EPDM (high UV/ozone resistance), PVC, and textile felt for guides.

1) Windshield seals

They seal the glass perimeter and absorb small expansions. They can be a single-profile seal or incorporate a locking strip, often with a chrome finish on classics.

How to choose the right seal

  1. Glass thickness: measure with calipers (typical: 4–6 mm). The profile channel must grip this thickness without play.
  2. Mounting type: with locking strip (rubber-mounted windshield) or for bonded installations (urethane) when the glass is glued in.
  3. Profile section: shape of the inner/outer lips and depth of the body channel.
  4. Finish: satin black, with chrome locking strip or black.

Summary installation (rubber-mounted windshield)

  • Clean and degrease the channel and edge of the bodywork.
  • Fit the seal onto the glass and place a cord in the inner channel.
  • Seat the assembly from the bottom and pull the cord inward so the lip pops over the edge.
  • Apply a sealant compatible with EPDM if required by the manufacturer and install the locking strip.
Chrome locking strip snapping into the windshield rubber
The locking strip secures the assembly and finishes the look.

2) Classic car profiles

Classics use specific profiles (U, T, H, double-lip) and decorative locking strips that aren’t used on modern vehicles. At GOMANTIUM we supply sizes by the meter and faithful reproductions for restoration.

Keys to getting restoration right

  • Replicate the original profile: bring a sample or photos with a ruler. Match the cross-section, Shore hardness, and lip shape.
  • Respect radii and corners: avoid stretching; use miter cuts and place joints at the lower edge.
  • Aesthetic compatibility: choose chrome/black locking strip to match the original finish.
Classic car rubber profile with chrome locking strip installed on the rear window
The correct profiles restore the vehicle’s original lines.

3) Window channels and belt weatherstrips

The window channel (felt-lined) centers the glass and eliminates vibration. The belt weatherstrip (scraper—outer and inner) wipes away water and dirt as the window moves.

Selection and measurement

  1. Glass width: common thickness is 3–5 mm (industrial up to 8–10 mm). Choose the guide whose usable channel matches.
  2. Guide type: straight, curved, open/closed, with or without fixing tabs.
  3. Belt weatherstrip: single or double lip; with metal spine for clipping or adhesive-backed.

Fitting and maintenance

  • Install the guide without stretching; test-fit and trim at the end.
  • Lightly lubricate with silicone spray for the first up/down cycle.
  • Inspect every 12 months: worn felt = scratches and play in the glass.
Felt-lined window guide and double-lip belt weatherstrip installed in a door
Felt guide + belt weatherstrip: the key combo for smooth, noise-free movement.

Quick table: recommended material by use

Application Recommended material Notes
Rubber-mounted windshield/rear window EPDM + locking strip High UV/ozone resistance; add sealant if required
Sliding window Felt-lined guide Select channel according to glass thickness
Outer/inner belt weatherstrip EPDM with metal spine or adhesive Single/double lip depending on water exposure
Classic restoration Specific EPDM profile + locking strip Prioritize equivalent cross-section and Shore hardness

Common mistakes (and how to avoid them)

  • Choosing an “oversized” channel out of caution: causes float and leaks. Measure the glass.
  • Installing with the profile stretched: over time it shrinks and gaps open up.
  • Using harsh solvents: they dry out EPDM. Use isopropyl alcohol.
  • Forgetting drainage: check that doors and frames have water outlets.

Need help?

At GOMANTIUM we’ll help you find the exact windshield seal, classic profile, or window channel/belt weatherstrip for your project. We supply by the meter and in ready-to-install kits.