Care & Cleaning - Plastic Windows

How a Plastic Marine Window Deteriorates

Plastic marine windows, commonly made from materials like acrylic or polycarbonate, are integral to the functionality and aesthetics of a vessel. However, over time, these windows can deteriorate due to various environmental factors and usage conditions. The primary causes of deterioration include:

Primary Causes of Deterioration

• UV Radiation: Prolonged exposure to ultraviolet (UV) rays from the sun can cause plastic marine windows to degrade. UV radiation breaks down the chemical bonds in the plastic, leading to a process called photodegradation. This results in the window becoming brittle, discolored, and less transparent, often turning yellow or cloudy.
• Saltwater Exposure: Marine environments expose windows to saltwater, which can have a corrosive effect. Salt particles can penetrate micro-cracks and abrasions on the window's surface, accelerating the degradation process. Over time, saltwater can cause the plastic to become pitted and etched, compromising clarity and structural integrity.
• Weather Conditions: Constant exposure to varying weather conditions, such as rain, wind, and temperature fluctuations, can stress plastic windows. Temperature extremes can cause the plastic to expand and contract, leading to cracking and warping. Additionally, rainwater, especially when acidic, can further contribute to the erosion and dulling of the window surface.
• Mechanical Abrasion: Frequent cleaning, rubbing, and contact with other surfaces can cause scratches and abrasions on the plastic window. Even fine scratches can accumulate over time, reducing the window's transparency and making it look foggy. Mechanical abrasion can also make the window more susceptible to other forms of damage.
• Chemical Exposure: Exposure to harsh chemicals, such as cleaning agents, solvents, and pollutants, can chemically react with the plastic material. These reactions can weaken the plastic, causing it to become more brittle and prone to cracking. Improper cleaning techniques or using inappropriate cleaning products can exacerbate this issue.
• Microbial Growth: In humid and damp conditions, plastic windows can become breeding grounds for mold and mildew. These microorganisms can cause staining and further degrade the material, leading to unpleasant odors and compromising the appearance of the windows.

How to Care for and Clean Marine Plastic Windows

Proper care and cleaning of marine plastic windows are essential to maintain their clarity, appearance, and durability. Here are detailed steps and tips to ensure your windows remain in excellent condition:

1. Regular Cleaning

   • Rinse with Fresh Water: Start by rinsing the windows with fresh water to remove salt, dirt, and debris. This prevents scratching when you clean the surface.
   • Use Mild Soapy Water: Prepare a solution of mild soap (such as a gentle dish soap) and lukewarm water. Avoid using harsh chemicals or ammonia-based cleaners, as they can damage the plastic.
   • Soft Cloth or Sponge: Use a soft, non-abrasive cloth or sponge to gently clean the windows. Avoid using rough materials like paper towels or scrub brushes that can scratch the surface.

2. Removing Stubborn Stains and Residue

   • Vinegar Solution: For tougher stains or residues, you can use a solution of one part white vinegar to three parts water. Apply the solution with a soft cloth, gently rubbing the stained area.
   • Plastic Cleaner: Specialized plastic cleaners and polishes are available that are designed for marine plastic windows. These products can remove minor scratches, restore clarity, and add a protective layer.

3. 3. Drying and Buffing

   • Rinse Thoroughly: After cleaning, rinse the windows thoroughly with fresh water to remove any soap or cleaner residue.
   • Dry with a Microfiber Cloth: Use a clean, dry microfiber cloth to gently dry the windows. Microfiber is ideal as it is non-abrasive and absorbs water efficiently.

4. UV Protection

   • Apply UV Protectant: Consider applying a UV protectant specifically designed for plastic marine windows. These protectants help to shield the windows from harmful UV rays, preventing yellowing and brittleness.
   • Regular Reapplication: Reapply the UV protectant as recommended by the manufacturer, usually every few months, especially before prolonged exposure to the sun.

5. Preventing Scratches

   • Avoid Abrasive Materials: Never use abrasive materials or cleaners on the windows. Even minor scratches can reduce clarity and make the windows more susceptible to further damage.
   • Use Covers: When the boat is not in use, consider using window covers to protect the plastic from UV exposure and physical damage.

6. Handling and Maintenance Tips

   • Regular Inspections: Periodically inspect the windows for signs of damage, such as cracks, scratches, or cloudiness. Early detection allows for timely repairs or maintenance.
   • Proper Storage: If you remove the windows for storage, ensure they are kept in a dry, cool place, away from direct sunlight. Use soft covers or padding to prevent scratches during storage.
   • Avoid Chemical Exposure: Keep windows away from harsh chemicals, solvents, and fuels, which can degrade the plastic material.

7. Professional Maintenance

   • Seek Professional Help: For severe scratches, cloudiness, or other damage, consider seeking professional restoration services. Professionals have the tools and expertise to restore the windows to like-new condition.

By following these care and cleaning guidelines, you can significantly extend the life and maintain the clarity of your marine plastic windows, ensuring they continue to provide excellent visibility and protection for your vessel.