PLEXIGLAS® can be repaired

Material Check

Did you know that certain PLEXIGLAS® surfaces can be reconditioned?

Light scratches or dull patches may develop during the use of transparent surfaces. Whether these signs of wear can be treated depends on the material, the surface finish and the type of damage.

For minor surface scratches on selected uncoated PLEXIGLAS® grades, surface reconditioning may be possible in accordance with the applicable processing instructions. The result depends on the grade, the nature of the damage and correct execution. This does not imply that the entire component is generally repairable.

When surfaces are exposed to everyday wear

Transparent surfaces can be subjected to wear during various activities:

  • cleaning and care
  • mechanical stress
  • transport and installation
  • contact with objects or tools
  • indoor and outdoor use

Before any treatment, check whether the damage consists only of superficial signs of wear or involves more extensive damage. This distinction is essential when choosing the appropriate approach.

When surface reconditioning may be an option

Reconditioning is only an option if the specific PLEXIGLAS® grade and its surface finish are suitable for the intended process. The relevant product information and processing instructions must be followed.

In particular, the following points should be clarified beforehand:

  • Which PLEXIGLAS® grade is involved?
  • Is the surface to be treated uncoated?
  • Are the scratches minor and confined to the surface?
  • Is the process intended for this particular surface?

Coated, textured or functional surfaces are excluded from the reconditioning options described here unless the manufacturer expressly permits the treatment for the specific product.

Possible processes and their limitations

On suitable uncoated surfaces, minor scratches may be reduced or removed by polishing or by sanding followed by polishing. The choice of process depends on the manufacturer's instructions and the nature of the damage.

Please note:

  • Sanding and polishing alter the treated surface.
  • Material removal may cause visible differences.
  • Complete restoration of the original appearance is not guaranteed.
  • Cracks, fractures or functional damage are outside the scope of this surface reconditioning.

An improvement in appearance alone does not demonstrate that the component still meets its technical requirements.

Reconditioning or replacement: a case-by-case decision

Whether a component can continue to be used after surface reconditioning must be assessed based on its condition and the requirements of the application.

Replacement may be necessary, particularly if:

  • cracks, fractures or other damage compromise safe use
  • the required function can no longer be assured
  • a coating or functional surface is damaged and no suitable reconditioning process is specified
  • the result does not meet the necessary optical or technical requirements

The possibility of surface reconditioning does not support general claims about service life, cost savings or environmental benefits.

For which applications may an assessment be useful?

Assessing the possibility of reconditioning may be useful, for example, where superficial signs of wear occur in the following applications:

  • displays and presentation surfaces
  • furniture and interior fit-out components
  • shopfitting and exhibition stand components
  • suitable DIY and hobby projects

Machine covers, protective glazing and other safety-critical components require a professional assessment before treatment. Requirements relating to protective function, dimensions and installation conditions must be taken into account.

Requirements at a glance

  • a PLEXIGLAS® grade suitable for the process
  • an uncoated surface or explicit manufacturer approval
  • damage suitable for surface reconditioning
  • compliance with the current processing instructions
  • suitable tools and correct execution
  • inspection of the result before further use

Guidance on carrying out the work

This overview does not replace processing instructions. Before starting, follow the product-specific manufacturer's instructions and the safety instructions for tools and processing materials.

  • Clearly identify the specific grade and surface finish.
  • Use only suitable sanding and polishing materials.
  • Secure the component as specified in the instructions.
  • Avoid excessive pressure and heat build-up.
  • Follow the requirements for wet sanding and personal protective equipment.

If suitable tools, experience or clear product information are lacking, a specialist should assess whether treatment is possible. Not every process is suitable for users to carry out themselves.

Conclusion

On selected uncoated PLEXIGLAS® grades, reconditioning minor surface scratches may be possible. This requires suitable damage and treatment in accordance with the applicable manufacturer's instructions.

Whether the result is sufficient for continued use depends on the specific component and its application. This does not guarantee general repairability or any specific extension of service life.

Before treatment, check the product data sheet, the surface finish and the appropriate processing instructions. Damage that is unclear or relevant to safety requires a professional assessment; the component may need to be replaced.

Clear 0A000 GT
  • 92% Transmission
  • transparent
  • high-gloss
  • UV absorbent
  • Thickness: 1.5 - 15 mm
from 26,74 € / m² * *excl. 19% VAT & shipping
Clear 0F00 GT
  • 92% Transmission
  • transparent
  • high-gloss
  • UV absorbent
  • Thickness: 3 - 40 mm
from 49,42 € / m² * *excl. 19% VAT & shipping

*all marked prices in the POLYVANTIS Onlineshop are plus the legally owed value added tax and shipping costs

„Semi-finished polymethyl methacrylate (PMMA) products and Polycarbonate (PC) film and sheet from POLYVANTIS are sold globally under various registered trademarks.
PMMA products are marketed on the European, Asian, African, and Australian continents under the trademark PLEXIGLAS®, and in the Americas under the trademark ACRYLITE®, both owned by Röhm GmbH, Darmstadt, or its affiliates.
Polycarbonate products are sold globally under the trademark LEXAN™ Film & Sheet, owned by SABIC Innovative Plastics.“