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Lexan™ Polycarbonate Cleaning Instructions

When Lexan™ sheet is first installed, glazing compound and masking paper adhesive can be easily removed by applying naphtha (VM&P) or kerosene with a soft cloth, followed immediately with a thorough soap and water cleaning. DO NOT USE GASOLINE. Adherence to regular and proper cleaning procedures is recommended to preserve appearance.

Preventing Scratches

Wash Lexan™ Sheet with a mild soap or detergent (e.g., Joy** dishwashing liquid) and lukewarm water using a clean sponge or a soft cloth. Rinse well with clean water. Dry thoroughly with a chamois or moist cellulose sponge to prevent water spots. Do not scrub or use brushes on these products: their coating is UV-resistant, not mar-resistant.

Fresh paint splashes, grease, and smeared glazing compounds can be removed easily before drying by rubbing lightly with a grade of VM&P Naphtha or isopropyl. Afterward, a warm final wash should be made, using a mild soap or detergent solution and ending with a thorough rinsing with clean water.

Repairing Hairline Scratches

Scratches and minor abrasions may be minimized by using a mild automobile polish. Four such products that tend to polish and fill scratches are Johnson Paste Wax, Novus Plastic Polish #1 and #2 (Novus Inc., Minneapolis, MN), Mirror Glaze plastic polish (m.G.M10 – Mirror bright Polish Co., Pasadena, CA), and Plexus* (B.T.I. Chemical, Aguora, CA). It is suggested that a test be made on a sample of Lexan™ sheet with the product selected and that the polish manufacturer's instructions be followed.

Some Important "Don'ts"

  • DO NOT use abrasive or highly alkaline cleaners on Lexan™ sheet products.
  • DO NOT scrape Lexan™ sheet products with squeegees, razor blades or other sharp instruments.
  • DO NOT use gasoline, benzene, acetone, or carbon tetrachloride on Lexan™ sheet products.
  • DO NOT clean Lexan™ sheet products in direct sunlight or at elevated temperatures.

Compatible Cleaners for Lexan™ Sheet Products

The following cleaning agents have been found compatible with Lexan™ sheet. The manufacturer's recommendations and instructions should be followed.

  • Joy**
  • Freon T.F.
  • Palmolive liquid***
  • Top Job**
  • VM&P grade Naphtha

New constructions and renovations frequently require that the glazing and surrounding sash and wall finish be cleaned of any excess mortar, paint, sealant, primers, or other construction compounds. Only use recommended cleaners to clean Lexan Sheet. Contact with harsh solvents such as methyl ethyl ketone (MEK) or muriatic acid can result in surface degradation and possible crazing of Lexan™ sheet.

Special Instructions for Lexan™ MR10 Sheet

To avoid damaging this sheet's UV-resistant coating, avoid the use of abrasive cleaners or cleaning implements. Butyl cellosolve works well for removal of paints, marking pen inks, lipstick, etc.. Masking tape, adhesive tape or lint removal tools may also work for lifting off old weathered paints. To remove label stickers and the like, the use kerosene or VM&P Naphtha is generally effective. For more stubborn sticker materials, apply light heat such as from a hair dryer in order to soften the adhesive and promote removal. DO NOT USE GASOLINE.



* Registered trademark of B.T.I. chemical

** Registered trademark of Proctor and Gamble

*** Registered trademark of Colgate Palmolive

Title: Lexan™ Polycarbonate Cleaning Instructions
Description: Lexan™ cleaning and scratch removal
Published: 3/31/2009
Last Edited: 4/9/2021
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