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.

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.

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.

Quick table: recommended material by use

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.