Acrylic sheet, also known as PMMA (Polymethyl Methacrylate) or plexiglass, is one of the most versatile transparent plastics available today. Many people use it as a safer, lighter alternative to glass for interior decoration and lighting.

But what about outdoor use?
The short answer is yes—acrylic sheet can absolutely be used outdoors when it is produced and installed correctly. Its weather resistance, UV stability, and strength make it suitable for a wide range of exterior applications.

At KUNXIN Plastics, we manufacture high-performance acrylic and Optical Plastic sheets that maintain clarity, color, and integrity even under harsh environmental conditions.

1. Why Acrylic Sheet Performs Well Outdoors

Acrylic sheet has inherent material advantages that make it one of the few transparent plastics suitable for exterior exposure.

• UV and Weather Resistance

Acrylic naturally resists ultraviolet (UV) radiation. Unlike ordinary plastics that yellow or crack, PMMA retains over 90% light transmittance even after years of outdoor exposure.
At KUNXIN Plastics, our sheets are UV-stabilized during polymerization, ensuring consistent transparency and color retention.

• High Impact Strength

Acrylic is 10 times stronger than glass while weighing only half as much. This impact resistance helps it withstand hail, wind, and accidental impacts—ideal for outdoor signage and glazing.

• Temperature Stability

Acrylic can endure temperatures from –20 °C to +80 °C without warping. In climates with seasonal changes, it maintains its shape and mechanical performance.

• Moisture and Chemical Resistance

Its non-porous surface prevents water absorption and surface degradation. Properly installed acrylic panels won’t swell or delaminate under rain or humidity.

2. Common Outdoor Applications of Acrylic Sheet

Because of these advantages, acrylic sheet is widely used outdoors across multiple industries.

Each of these applications benefits from acrylic’s balance of optical clarity, light diffusion, and environmental endurance.

3. How to Ensure Long-Term Outdoor Performance

Even though acrylic is weather-resistant, proper selection, fabrication, and installation are essential to achieve long-term durability.

• Choose UV-Stabilized Grades

Always select outdoor-grade acrylic sheets that include UV inhibitors. KUNXIN Plastics offers both cast and extruded versions with UV protection built into the polymer chain rather than just a surface coating.

• Allow for Thermal Expansion

Acrylic expands slightly with heat. When mounting outdoors, leave a small clearance (about 0.3 mm per 100 mm) on each side to prevent warping or cracking.

• Use Compatible Sealants

For glazing or signage, use neutral-cure silicone or special acrylic adhesives to avoid chemical reactions that can damage edges.

• Clean Properly

Regularly clean acrylic surfaces using mild soap and water. Avoid ammonia-based cleaners or solvents, which may cause micro-cracks or haze.

• Avoid Over-tight Fastening

Use rubber washers or flexible fittings when fixing acrylic sheets to metal frames. Over-tight screws can stress the material and shorten its lifespan.

When these precautions are followed, outdoor acrylic installations can last 10–15 years or even longer while maintaining transparency and aesthetics.

4. Advantages of Outdoor Acrylic vs Other Materials

Acrylic strikes an ideal balance between optical quality, cost, and outdoor durability—especially for decorative and lighting projects where appearance matters as much as strength.

5. Outdoor-Grade Acrylic Solutions from KUNXIN Plastics

At KUNXIN Plastics, we provide a complete range of outdoor-suitable acrylic and optical plastic sheets manufactured in our Jiangmen, Guangdong facility. Our capabilities include:

• 100% Virgin PMMA Material for clarity and color stability

• UV-Stabilized Cast and Extruded Grades for outdoor durability

• Precision CNC & Laser Cutting, Heat Bending, and Polishing

• Custom Finishes: clear, frosted, mirrored, colored, or textured surfaces

• OEM/ODM Service for global buyers with specific design requirements

Whether for architectural glazing, illuminated signage, or outdoor lighting diffusers, our acrylic sheets offer dependable performance and elegant design possibilities.

6. Frequently Asked Questions (FAQ)

Q1: Will acrylic turn yellow in the sun?
No. Our UV-resistant acrylic sheets retain transparency for many years, unlike ordinary plastics that discolor under sunlight.

Q2: How long does outdoor acrylic last?
Depending on environment and installation, outdoor acrylic panels can last 10 – 20 years without significant color or structural change.

Q3: Can acrylic withstand heavy rain and wind?
Yes. Acrylic’s high impact strength and low water absorption make it suitable for heavy-duty exterior use.

Q4: Does acrylic expand in hot weather?
Slightly—about 0.07 mm per °C per meter. Proper frame spacing accommodates this easily.

Q5: Do you provide custom sizes for outdoor panels?
Absolutely. KUNXIN Plastics offers custom cutting, thickness options, and shapes to fit project requirements.

7. Conclusion

So, can acrylic sheet be used outdoors?
Yes—when properly selected and installed, it is one of the most reliable transparent materials for external environments. Acrylic combines optical clarity, UV stability, lightweight strength, and design flexibility, making it a perfect fit for modern architecture and outdoor displays.

At KUNXIN Plastics, we manufacture and customize premium outdoor acrylic sheets for international clients who demand both performance and appearance.
Visit www.kunxinplastics.com to explore our full range and request a quotation for your next project.