Polycarbonate sheet is one of the most widely used materials across Dubai — from residential pergolas and skylight covers to industrial roofing, partitions, and greenhouse panels. It is lightweight, virtually unbreakable, UV-resistant, and incredibly versatile. But like any premium material exposed to Dubai's harsh outdoor conditions, polycarbonate sheet requires proper cleaning and maintenance to keep it performing and looking its best.
The problem is that most people clean polycarbonate the wrong way — using the wrong products, the wrong tools, or the wrong technique. One bad cleaning session can permanently scratch the surface, strip the UV coating, or leave chemical damage that no amount of polishing will fix.
This guide covers everything you need to know about cleaning both solid and multiwall polycarbonate sheet correctly, safely, and effectively — whether you are a homeowner in Dubai, a contractor across Abu Dhabi, or a facilities manager in Sharjah.
Understanding Your Polycarbonate Sheet Before You Clean It
Before picking up a cloth or a cleaning product, it helps to understand what type of polycarbonate sheet you are working with — because solid and multiwall panels have different structures and therefore slightly different cleaning requirements.
Solid Polycarbonate Sheet is a single, uniform layer of polycarbonate — dense, completely clear or tinted, and used where maximum impact resistance and optical clarity are needed. Think security glazing, machine guards, skylights, and canopy covers across Dubai villas and commercial properties.
Multiwall Polycarbonate Sheet — also called twin-wall or triple-wall — has a structured hollow channel design that runs through the panel. This makes it lightweight, thermally efficient, and ideal for roofing pergolas, greenhouses, and covered walkways. The channels inside multiwall panels can collect dust and moisture if the panel ends are not properly sealed, which adds an extra dimension to the cleaning process.
Both types are supplied with a UV-protective coating on the outer surface. This coating is what protects the panel from yellowing and degradation under Dubai's intense sun — and it is also what is most easily damaged by harsh cleaning chemicals or abrasive materials.
What Never to Use When Cleaning Polycarbonate Sheet
Getting this wrong is where most people cause permanent damage. Before covering what works, here is what to absolutely avoid:
Abrasive materials — Steel wool, rough sponges, dry paper towels, and abrasive cleaning pads will scratch the polycarbonate surface permanently. Even what feels like a soft cloth can cause micro-scratches if used dry.
Harsh chemical solvents — Acetone, benzene, petrol, turpentine, and strong alkaline cleaners will chemically attack the polycarbonate surface and strip the UV coating. This causes clouding, crazing, and permanent discolouration that cannot be reversed.
High-pressure washing without care — While water itself is safe, directing a high-pressure jet directly at the edges or channels of multiwall polycarbonate sheet can force water into the panel structure, leading to internal moisture buildup and mould growth.
Dry wiping — Never wipe polycarbonate sheet dry. Even fine dust particles on a dry surface act as an abrasive when dragged across the panel. Always wet the surface first.
How to Clean Solid Polycarbonate Sheet — Step by Step
Solid polycarbonate sheet is the more straightforward of the two to clean. Follow these steps for a scratch-free, streak-free result every time.
Step 1 — Rinse First Start by rinsing the entire surface with lukewarm clean water. This loosens and removes loose dust, sand, and debris before any contact cleaning begins. In Dubai, where sand and fine dust settle on surfaces daily, this step is non-negotiable.
Step 2 — Prepare Your Cleaning Solution Mix a small amount of mild liquid dish soap or a dedicated polycarbonate-safe cleaner with lukewarm water. Avoid hot water, which can cause thermal stress on the panel surface.
Step 3 — Clean with a Soft Microfibre Cloth Using a clean, soft microfibre cloth, gently wipe the surface in straight strokes — not circular motions. Circular wiping creates swirl marks that are visible in direct sunlight. Work from top to bottom, rinsing your cloth regularly to avoid dragging dirt back across the panel.
Step 4 — Rinse Thoroughly Rinse the entire surface again with clean water to remove all soap residue. Soap left on the surface can attract dust and leave streaking.
Step 5 — Dry with a Clean Microfibre Cloth Gently pat or lightly wipe dry with a fresh, clean microfibre cloth. Do not rub aggressively. In Dubai's climate, panels dry extremely quickly — in most cases a light wipe is all that is needed before the remaining moisture evaporates.
How to Clean Multiwall Polycarbonate Sheet — Step by Step
Multiwall polycarbonate sheet follows the same surface cleaning process as solid sheet, but requires additional attention to the panel channels and edges.
Surface Cleaning Follow the exact same five steps outlined above for the exterior face of the panel. The surface cleaning process is identical.
Cleaning the Internal Channels The hollow channels inside multiwall polycarbonate sheet can accumulate dust, insects, and moisture — particularly in Dubai's dusty environment. If your panels have proper aluminium tape or channel caps sealing the ends, internal contamination is minimal. If not, here is how to address it:
- Use a can of compressed air to blow debris out from the open end of the channels
- For moisture or algae buildup inside the channels, flush with clean water and allow to drain and dry completely before resealing the ends
- Never insert cleaning tools into the channels — this risks damaging the internal walls
Check and Reseal Panel Ends After cleaning, inspect the aluminium tape or channel caps sealing the ends of your multiwall polycarbonate sheet. UV exposure and heat cycles in Dubai can cause tape to lift or caps to crack over time. Reseal any open ends immediately to prevent future contamination and moisture ingress.
Protecting Polycarbonate Sheet After Cleaning
Cleaning is only half the maintenance equation. After each clean, consider applying a dedicated polycarbonate polish or anti-static treatment. These products:
- Restore surface clarity and shine
- Reduce static electricity that attracts dust — particularly useful in Dubai's dusty environment
- Provide an additional layer of surface protection between cleans
Anti-static polycarbonate treatments are available from specialist plastic sheet suppliers across the UAE and are strongly recommended for panels in high-dust outdoor environments.
How Often Should You Clean Polycarbonate Sheet in Dubai?
Dubai's combination of dust, sand, humidity variations, and intense UV exposure means polycarbonate sheet gets dirty faster than in most other climates. As a general guide:
- Outdoor roofing and pergola panels — Clean every one to two months
- Skylights and glazing — Clean every two to three months or after dust storms
- Indoor partitions and screens — Clean every three to six months depending on environment
- Greenhouse and agricultural panels — Clean at the start and end of each growing season
After a major dust storm — which Dubai experiences several times a year — an immediate rinse is recommended to prevent abrasive dust particles from scratching the surface as wind moves them across the panel.
Final Thoughts
Polycarbonate sheet is a long-term investment — and like any investment, it rewards proper care. The right cleaning technique costs nothing extra and adds years to the life and clarity of your panels. The wrong technique can cause permanent damage in a single session.
Clean gently. Use the right products. Protect the UV coating. And if you are installing new polycarbonate sheet across Dubai or anywhere in the UAE, make sure you are starting with quality panels that are built to last.
At Arona Trading, we supply premium solid and multiwall polycarbonate sheet to homeowners, contractors, and businesses across Dubai, Abu Dhabi, Sharjah, and Ras Al Khaimah — with expert guidance on product selection, installation, and maintenance.
Frequently asked questions
Here are some common questions about our company.
A pressure washer can be used carefully on solid polycarbonate sheet at low to medium pressure, kept at least 30cm from the surface. For multiwall polycarbonate sheet, avoid directing high-pressure water at open panel ends or channel edges, as water forced into the channels can cause internal moisture problems and mould growth.
Mild liquid dish soap diluted in lukewarm water is the safest and most effective everyday cleaning solution for polycarbonate sheet. For deeper cleaning or surface restoration, use a dedicated polycarbonate-safe cleaner available from specialist plastic suppliers in Dubai and across the UAE.
Light surface scratches can sometimes be reduced using a dedicated polycarbonate polish applied with a soft microfibre cloth. Deep scratches cannot be removed by cleaning alone and may require panel replacement. Prevention — using correct cleaning techniques from the start — is always better than cure.
Light surface scratches can sometimes be reduced using a dedicated polycarbonate polish applied with a soft microfibre cloth. Deep scratches cannot be removed by cleaning alone and may require panel replacement. Prevention — using correct cleaning techniques from the start — is always better than cure.
Yellowing is caused by UV degradation of the panel surface. Quality polycarbonate sheet supplied with a UV-protective coating resists yellowing for many years. Proper cleaning that preserves the UV coating — avoiding harsh chemicals and abrasives — extends this protection significantly. Always source UV-coated polycarbonate sheet from reputable suppliers in the UAE.