How to Clean a Lexan Windshield

Lexan polycarbonate windshields offer excellent impact resistance, but they require specialized care to keep them clear and scratch-free. This guide provides practical, step-by-step instructions and product-based tips tailored to American users, using Lexan-specific cleaners and accessories.

Whether you’re preparing a vehicle, ATV, or utility equipment windshield, the right cleaners and polishing steps help maintain optical clarity while protecting the surface from micro-scratches and hazing.

Quick Answer

Use a Lexan polycarbonate windshield cleaner spray to remove dust and grime, then wipe with a Lexan windshield cleaning kit microfiber for a streak-free finish. If minor scratches appear, apply a polycarbonate scratch remover for Lexan windshield following the product’s directions, and finish with a polycarbonate windshield polish for Lexan to restore clarity.

What You’ll Need

  • Lexan polycarbonate windshield cleaner spray
  • Lexan windshield cleaning kit microfiber
  • Lexan-safe cleaning solution for polycarbonate windshield
  • Polycarbonate scratch remover for Lexan windshield
  • Polycarbonate windshield polish for Lexan
NOVUS-PK1-8 | Plastic Clean & Shine #1, Fine Scratch Remover #2, Heavy Scratch Remover #3 and Polish Mates Pack | 8 Ounce Bottles NOVUS-PK1-8 | Plastic Clean & Shine #1, Fine Scratch Remover #2, Heavy Scratch Remover #3 and Polish Mates Pack | 8 Ounce Bottles

EntireFlight FOD Off Premium Aviation Grade Acrylic Plexiglass Cleaner Spray for Windshields Windsscreens and Windows - Plastic & Polycarbonate | Bugs - Dirt - Grease - Grime - Go FOD Off EntireFlight FOD Off Premium Aviation Grade Acrylic Plexiglass Cleaner Spray for Windshields Windsscreens and Windows – Plastic & Polycarbonate | Bugs – Dirt – Grease – Grime – Go FOD Off

Unger Professional Streak-Free EasyGlide Glass Cleaner Concentrate, 12 oz, Ammonia-Free, Makes 8 Gallons of Solution, Safe for Tinted Windows, LOW-E, Windshields, and Mirrors Unger Professional Streak-Free EasyGlide Glass Cleaner Concentrate, 12 oz, Ammonia-Free, Makes 8 Gallons of Solution, Safe for Tinted Windows, LOW-E, Windshields, and Mirrors

Before You Start

Clear the work area and remove loose debris with a gentle brush or compressed air. Work in a shaded area to avoid rapid evaporation that can leave streaks. Inspect the windshield for deep scratches or cracks; these may require professional repair. Protect surrounding trim and coatings by using soft, non-abrasive applicators. Plan for a 20–40 minute session depending on the windshield size and condition.

Important cautions include using only Lexan-safe cleaning solutions and avoiding ammonia-based products that can craze polycarbonate. Do not use abrasive pads or household solvents on Lexan, as they may etch the surface.

Step-By-Step: How To Clean A Lexan Windshield

  1. Rinse the surface with lukewarm water to remove loose dust before applying any cleaner.
  2. Spray a light layer of Lexan polycarbonate windshield cleaner spray across the windshield.
  3. Wipe gently with a Lexan windshield cleaning kit microfiber cloth, using straight, uniform strokes to lift grime without scratching.
  4. For stubborn spots, apply a small amount of Lexan-safe cleaning solution for polycarbonate windshield and re-wipe with a fresh microfiber section.
  5. Inspect for hazing or fine streaks. If present, repeat with a clean microfiber cloth and a minimal cleaner amount to avoid smearing.
  6. Address any light scratches with polycarbonate scratch remover for Lexan windshield following the product instructions, typically in a circular motion with moderate pressure.
  7. Buff the treated area with a clean microfiber to remove the residue from the scratch remover.
  8. Apply polycarbonate windshield polish for Lexan to restore clarity and create a protective layer; buff evenly until the surface looks clear and glossy.
  9. Wipe down one final time with a dry microfiber to ensure a spotless finish.
  10. Test the field usability by checking visibility in daylight and shade to confirm evenness and absence of streaks.
  11. Store the cleaning products in a cool, dry place and replace cloths as they wear to prevent new scratches.

Troubleshooting

Symptom Likely Cause Fix Prevention
Streaks after cleaning Residue from cleaner or dirty cloth Wipe with a fresh microfiber using light pressure Use only Lexan-safe cleaners and dedicated microfiber cloths
Cloudy or hazy appearance Fine scratches or hazing Apply a scratch remover following instructions, then polish Avoid abrasive tools; test cleaners on inconspicuous areas
Scratches become more noticeable Overly aggressive scrubbing Switch to lighter pressure and slower strokes Use soft, non-abrasive applicators consistently
Cleaner causes dull spots Incompatible product Switch to a Lexan-safe solution Read label for material compatibility before use

Common Mistakes

  • Using household glass cleaners or ammonia-based products on Lexan
  • Scrubbing with abrasive pads or rough cloths
  • Over-wetting the surface, which can lead to streaks or pooling cleaner
  • Avoiding a test patch before full application on a visible area
  • Neglecting to finish with a polishing step after scratch removal

Tips For Best Results

  • Always start with gentle cleaning to remove surface dust without scratching.
  • Work in small sections and use overlapping strokes to ensure even coverage.
  • Keep cleaning cloths dedicated to Lexan products to prevent cross-contamination.
  • Temporary hazing can be reduced by using a final Lexan-safe polishing step on the entire windshield.
  • Store products away from direct sunlight to preserve their chemical efficacy.

Call A Professional

Seek professional help if the Lexan windshield shows deep gouges, cracks that compromise structural integrity, or hazing that does not improve after multiple polishing sessions. Stop using any product that causes discoloration, film, or peeling. Contact a certified auto body or polycarbonate specialist if the surface requires structural repair or if the windscreen is part of a critical safety system.

FAQ

Can I use regular car soap on Lexan windshields?

Prefer Lexan-safe cleaners designed for polycarbonate to avoid surface damage.

Is it okay to buff scratches out at home?

Light scratches can be addressed with a dedicated scratch remover and polishing, but deep gouges may require a professional repair.

How often should I clean a Lexan windshield?

Regular cleaning after exposure to dust, road grime, and weather helps maintain clarity; frequency depends on use and environment.

Will polishing restore full clarity after scratches?

Polishing improves clarity but may not fully remove deep scratches; assess results and avoid over-polishing.

What should I do after scratching the surface during cleaning?

Stop immediately, switch to non-abrasive tools, and re-clean with Lexan-safe products before attempting further polish.

Buying Guide

When choosing cleaning and care products for a Lexan windshield, consider several factors. Size matters: larger windshields benefit from faster-acting spray formulas and larger microfiber kits. Noise level and user experience aren’t direct factors here, but ease of use matters for frequent maintenance. Look for Lexan-safe labels to protect polycarbonate and avoid solvents that can craze the surface. Energy efficiency isn’t a primary concern for cleaning routines, but compact, spray-based bottles reduce waste and improve efficiency. Controls should be simple: spray, wipe, buff. For placement, store cleaning gear where it’s readily accessible near the garage or vehicle storage. Compare multiple products based on: compatibility with Lexan, presence of scratch removal and polishing steps, microfiber cloth quality, and user reviews. A complete kit with spray cleaner, microfiber cloths, scratch remover, and polish offers the best value, ensuring you have all required components in one package. If you operate in extreme climates, choose formulas designed for UV resistance and temperature stability to maintain performance over time.