During the COVID-19 pandemic, businesses of all sizes installed plexiglass barriers to create a safer work environment. Today, many of those barriers are still in place - but over time, they’ve become scratched, scuffed, or even cracked. Although plexiglass is known for its durability and transparency, it does require proper care to maintain its appearance and effectiveness.
In this blog, AGC Signs will explore plexiglass repair, focusing on how to fix common issues like surface scratches and minor cracks. From using abrasive acrylic polishes to remove blemishes to applying acrylic solvent cement for structural fixes, we'll guide you through effective plexiglass repair techniques to restore your barriers and extend their usefulness.
For more detailed information about DIY plexiglass repair, please check out the sources used for this article, which are listed further below. Also, contact us today if you need plexiglass barriers or more maintenance tips.
1. Plexiglass Repair: Fixing Scratches
The first step in fixing any scratch on your plexiglass barrier is determining the depth of the scratch.
According to Acmeplastics.com, "any scratches deeper than 5 mm are exceptionally heavy scratches – these are generally regarded as irreparable, and can only occasionally be repaired by specialty buffing tools."
If you run your fingernail across a scratch and it gets snagged, the scratch is probably beyond your repair. If the scratch is less than 5 mm in depth, however, then try this step-by-step process.
Consider this step-by-step guide for repairing scratches on your plexiglass:
A) Clean the surface:
Using a clean, soft cloth, wipe the plexiglass surface clean with water or a special acrylic cleaner. Even dish soap can be used to remove any dirt. Afterwards, rinse and dry off the plexiglass.
B) Use an Acrylic Polish:
For mild scratches, try using an abrasive acrylic polish (like the Novus Polish Products). Using a cloth, polish the scratched area using circular motions until the area is smooth, then wipe off the polish with a clean cloth.
Below is a video from TAP Plastics on repairing surface scratches with a Novus polish.
C) Use Fine Sandpaper
If the scratch cannot be removed with acrylic polish or for more moderate scratches, use fine sandpaper (beginning with 600 grit or 800 grit sandpaper).
Wet the sandpaper and gently sand in circular motions over the scratch.
Afterwards, rinse the surface with water, then take finer sandpaper (1000 grit or 1200 grit) and repeat the same process, sanding the scratch in circular motions until the surface is smooth. Finally, rinse with water and wipe with a clean cloth.
D) Buff the Surface
Lightly coat the repaired surface with a buffing compound and, if you have access to a low-speed buffing wheel, buff the surface to finish. Again, wipe off the surface with a clean cloth when finished.
E) Replace Your Plexiglass
If the scratch still appears, then the scratch is probably too deep for repair. If this is the case, contact us at AGC Signs for new plexiglass barriers. Also, keep in mind that abrasion weakens the plexiglass, so try to use the finest sandpaper possible.
2. ADDRESSING Minor Damage
If a piece of your plexiglass breaks off and you think it can be glued back on, you can actually find plexiglass adhesives at the hardware store.
If you review different DIY videos, you will see that there are quite a few different ways to bond plexiglass.
Have a look at the video below from TAP Plastics to see how to glue plexiglass/acrylic.
Now, if you have plexiglass that has cracked, you can also make use of plexiglass adhesives. In "How to Repair a Cracked Plexiglass Windshield" by Joshua Bailey, you can read step-by-step instructions on fixing a crack.
However, your best bet is to use a specialized acrylic solvent cement. Continue reading to learn how to use this type of solvent.
A) Clean the cracked surface area
Use a mild soap or detergent mixed with water to clean the cracked area. Gently remove any dust, dirt, or debris from the crack. Ensure the area is completely dry before proceeding with the repair.
B) Preparation
If the crack is small and manageable, consider using a specialized acrylic solvent cement.
For larger cracks, prepare a plexiglass patch that is slightly larger than the cracked area. You can create the patch by cutting a piece of plexiglass to fit the damaged area using a saw or a cutting tool appropriate for plexiglass.
C) Applying Solvent Cement
Apply the acrylic solvent cement to the cracked area. Use a small applicator or a syringe for precise application. Be cautious not to apply too much solvent, as it could damage the plexiglass further.
Hold the edges of the crack tightly together as the solvent cement sets. Follow the manufacturer's instructions on the drying time.
D) Clamping or Taping
Secure the cracked edges together using clamps or strong, durable tape. Make sure the clamps or tape do not apply excessive pressure that could cause the plexiglass to crack further. Use protective padding between the clamps and the plexiglass to prevent any damage.
E) Sanding and Polishing
Once the solvent cement has fully dried, use fine-grit sandpaper to smooth out any rough edges on the repaired area. Start with a coarser grit and gradually move to finer grit for a smoother finish. After sanding, use a plastic polish and a soft cloth to restore the shine and transparency of the plexiglass.
F) Replace Your Plexiglass
If the crack is too extensive for solvent cement to provide a strong enough bond, or if the plexiglass is significantly compromised, it might be best to replace the entire piece.
Consult with a professional if you're uncertain about how to proceed or if the crack seems too severe for a DIY repair.
3. Why You Should Replace Plexiglass Over Time
While plexiglass repair is effective for minor scratches and surface damage, there comes a point when replacement is the better option. Over time, even the most well-maintained barriers can become too worn or damaged to be safely or effectively repaired.
A) When to Replace Plexiglass Barriers
The replacement of plexiglass barriers depends on various factors, including the level of wear and tear, the extent of damage, and the specific environment in which the barriers are installed. Generally, plexiglass barriers should be replaced when they exhibit any of the following signs:
Here’s why you may want to consider replacing your plexiglass:
Deep Cracks or Breaks: If the plexiglass has structural damage, such as deep cracks or full breaks, repair materials like solvent cement may only offer a temporary fix. Replacing the panel ensures long-term safety and durability.
Cloudiness and Discoloration: Extended exposure to UV light and harsh cleaners can cause yellowing or cloudiness. This not only affects visibility but also gives your workspace an outdated and poorly maintained appearance.
Excessive Surface Damage: When scratches are too numerous or severe, polishing may no longer restore clarity. In these cases, replacement is the most effective way to regain a clean, transparent look.
Hygiene Concerns: Heavily scratched or damaged plexiglass can trap bacteria and be difficult to sanitize effectively. Replacing older panels helps maintain a more hygienic environment. Newer plexiglass options may offer better durability, UV resistance, and even recyclable materials, making replacement a more sustainable long-term choice.
Updated Safety Standards or Aesthetics: If your workspace design has changed or you’re upgrading for a more modern look, replacing plexiglass barriers can improve both form and function.
Regular inspections can help you determine when plexiglass repair is no longer enough—and when it’s time to invest in new panels to protect your people and your brand.
B) How to Dispose of Plexiglass Barriers
Disposing of plexiglass barriers should be done in a way that is both environmentally responsible and compliant with local regulations. Here are some common methods for getting rid of plexiglass barriers:
Recycling: Check with your local recycling centre or waste management facility to determine if they accept plexiglass for recycling. Some facilities may have specific guidelines for accepting and processing plexiglass. Ensure that you follow any preparation instructions provided by the recycling center.
Donation: If the plexiglass barriers are still in usable condition, consider donating them to organizations or individuals who may find them useful. This can help reduce waste and benefit others who may need such materials for various projects or purposes.
Reusing or repurposing: If the plexiglass barriers are in good condition, consider repurposing them for other projects or using them for alternative applications. This can help extend their lifespan and minimize waste.
Disposal: If recycling or donation is not possible, contact your local waste management authority to inquire about the appropriate method of disposal. They can provide guidance on whether the plexiglass can be included in regular waste disposal or if it requires special handling.
It is essential to follow local guidelines and regulations related to waste disposal and recycling to ensure that you dispose of plexiglass barriers in an environmentally friendly and responsible manner.
Avoid simply throwing plexiglass barriers in regular garbage without understanding the proper disposal methods, as this can contribute to environmental pollution and potentially violate local waste management regulations.
Plexiglass Repair & Replacement
Are you one of the many business owners who purchased plexiglass barriers during the COVID-19 pandemic, and they are now worn out and damaged? Perhaps you have gotten used to having plexiglass barriers, and you enjoy the peace of mind they give you and your workers.
For thorough repairs or for full replacements, you will want to contact the professionals at AGC Signs. If you have trouble with plexiglass repair or you need a high-quality replacement for your plexiglass barriers, be sure to contact us at AGC Signs. Also, check out our gallery of plexiglass barriers and shields.
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