Does Polycarbonate Scratch? Yes. Here's How to Prevent It

Yes. Polycarbonate can scratch. Its surface is softer than glass, and if you drag grit across it with a dry rag, it will show marks. That is the honest answer, and anyone who tells you different is selling something.

But look at the other side of the trade. Glass resists scratches and then shatters the day a rock, branch, or chain hits it. Polycarbonate takes that same hit and stays in one piece. With a few simple washing habits, a Lexan door stays clear for years. Here is how to care for one, straight from the people who build them.

Why polycarbonate scratches, and why that is the right trade

Every window material makes a trade between surface hardness and impact strength. Glass sits at one end. It is hard on the surface, so sand and dust do not mark it easily. But hard also means brittle. One good hit from a rock thrown by your tires or a branch snapping back, and tempered glass turns into a cab full of pieces.

Polycarbonate sits at the other end. The surface is softer, so it can pick up fine scratches if you treat it like glass. But the material itself is tough clear through. It flexes, absorbs the hit, and stays in the frame. That is why our owner Leighton can swing a hammer into our 1/2” thick CAT D Series door on camera, unedited, and the door shrugs it off.

For a machine that works in brush, rock, and flying debris, that trade is not close. A scratch is a cosmetic issue you can prevent. A shattered door is an injury risk and a down machine. We cover the full comparison in our guide to polycarbonate vs tempered glass skid steer doors.

What actually scratches a Lexan door

Almost every scratched polycarbonate door we have seen was scratched by the operator, not the job. These are the usual causes:

• Dry wiping. This is the number one cause by far. The door gets dusty, someone grabs a shop rag or their glove and wipes it. The dust is fine grit, the rag drags it across the surface, and you get swirl marks.
• Paper towels on a dry surface. Paper is wood fiber. It is more abrasive than people think.
• Ammonia-based glass cleaners. Standard blue window sprays contain ammonia, which attacks polycarbonate over time. It causes hazing and can weaken the surface. Use them long enough and the door looks fogged even with zero scratches.
• Abrasive pads and powders. Scouring pads, scrub brushes with stiff bristles, and gritty cleansers all leave marks in one pass.
• Razor blades and scrapers. Fine on glass. Never on polycarbonate, including ice scraping in winter. Use lukewarm water or let the defrost from your cab heater do the work.
• Running a wiper on a dry, dirty door. The blade grinds the dust across the surface in a perfect arc, so the scratch sits right in your line of sight.
• Solvents. Acetone, lacquer thinner, brake cleaner, and gasoline splash can craze or soften the surface. Wipe fuel or hydraulic fluid off promptly with soapy water.

Notice what is not on that list: normal work. Brush slapping the door, gravel dust, rain, mud. Day-to-day contact does far less damage than one bad cleaning session.

How to wash a polycarbonate door the right way

The whole job takes five minutes and uses things you already have.

1. Rinse first, always. Flood the door with clean water to float the grit off before anything touches the surface. A garden hose is perfect. If you use a pressure washer, keep the tip a few feet back and use a wide fan pattern.
2. Wash with mild soap. A few drops of dish soap in a bucket of warm water. Nothing gritty, nothing with ammonia or bleach.
3. Use a soft cloth or sponge. Microfiber cloth or a clean soft sponge. Wipe gently in straight lines, top to bottom. Do not scrub in circles and do not press hard on a stubborn spot. Soak it instead.
4. Rinse again. Get all the soap off so it does not dry into streaks.
5. Blot dry. Use a clean microfiber cloth and blot or drag it lightly. Never buff a nearly dry surface with pressure.
6. Deal with sap and tar the gentle way. A soft cloth with a little isopropyl alcohol, applied to the spot and rinsed off right away, handles most sticky stuff. Test a corner first and never let solvents sit.

That is the entire routine. For a deeper look at specific products, see our guide to cleaning products safe for Lexan.

Safe vs. never: the quick reference table

Print it, tape it in the shop, and your door outlasts the argument.

The 60-second care checklist

Run through this and your door stays clear season after season:

• Rinse the door with water before anything touches it
• Wash with mild dish soap and a soft cloth, straight lines, light pressure
• Rinse the soap off and blot dry with clean microfiber
• Keep ammonia cleaners, solvents, and abrasives away from the door
• Never dry wipe, even for “just a quick look” before climbing in
• Wet the door before running the wiper, every time
• Use lukewarm water on frost, never a scraper
• Wipe off fuel, hydraulic fluid, or sap promptly with soapy water
• Check wiper blades each season and replace them when the rubber hardens

A note on wipers

A wiper is one of the best upgrades you can put on a polycarbonate door, and one of the fastest ways to scratch it if you use it wrong. The rule is simple: wet door, wiper on. Dry door, wiper off.

Our electric wiper kit is built for our doors and keeps your sight line clear in rain and snow. Just get in the habit of spraying the door down before the first swipe on a dusty day. In freezing weather, make sure the blade is not frozen to the surface before you switch it on.

Already have scratches? Here is the honest picture

Fine scratches and light haze can usually be improved with a plastic polish made for polycarbonate, worked in with a soft cloth. Deep gouges are permanent. No polish removes them.

Here is the part that matters: scratches do not change what the door does. A scratched polycarbonate door still stops the branch, the rock, and the chain the same as it did on day one. Scratches are a cosmetic issue, not a safety issue. If your door has picked up some marks, read our scratch repair guide for polycarbonate doors before you buy anything.

And know where the line sits on coverage. Every door we build carries a limited lifetime warranty against door failure or breakage: one free replacement for life for the original owner, under normal conditions. Surface scratches from normal use are wear, not failure. If you are not sure which side of the line your door is on, call or text (800) 781-8000 and we will tell you straight.

Why operators still choose polycarbonate over glass

Ask the operator who has had tempered glass let go next to his head. Scratch resistance stops mattering the moment the material fails.

Polycarbonate gives you protection superior to tempered glass, a sealed cab that helps regulate temperature in January and July, and an immediate lift in what your machine is worth when you sell it. Safety, comfort, value. That is the whole case, and it is why we built the original shatterproof polycarbonate door in the first place.

Every door we make, from the Bobcat M Series door to the hammer-tested CAT D Series door, is CNC-cut for your exact make and model. Cut to fit your machine, never trimmed to fit. Treat the surface right with the checklist above and the trade works entirely in your favor: a door that stays clear, stays whole, and keeps you working.

Find your door in 30 seconds. Pick your machine’s make and model and see the exact door built for it: [Find Your Door]. Questions? Call or text (800) 781-8000, Mon–Fri 7am–4pm CST.