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4mm Twin Wall Polycarbonate Sheets – UV Protection – Factory Direct
ProPCMaterial supplies 4mm twin wall polycarbonate sheets factory direct to distributors, contractors, and construction firms across the US, Europe, the Middle East, and Australia. Built for commercial and industrial roofing projects, every sheet is tested to JC/T 116-2012 standards by a CNAS-accredited laboratory and backed by a 10 year UV warranty. Custom sizes and bulk orders available.
- Thickness: 4mm Twin wall (double wall hollow structure)
- Width: 2100mm
- Length: 6000mm
- Color: Clear, Opal, Light Blue, Lake Blue, Green, Bronze, Beige
- Custom sizes available for bulk and special orders
Why Choose ProPCMaterial 4mm Twin Wall Polycarbonate Sheets?
As a direct manufacturer based in Shijiazhuang, Hebei Province, China, ProPCMaterial supplies 4mm twin wall polycarbonate sheets to distributors, contractors, and construction firms worldwide. Every sheet undergoes strict quality control and is independently tested by HAP Testing Service, a CNAS and ILAC-MRA accredited laboratory, to JC/T 116-2012 industry standards. A 10-year warranty is provided against yellowing, brittleness, and UV degradation under normal outdoor conditions.
Key Features:
- High Light Transmission: Light transmission ranges from 10% to 82% depending on color, maximizing natural daylight while reducing heat buildup in enclosed spaces.
- UV Protection: A 50 micron coextruded UV protective layer on both sides provides robust defense against harmful ultraviolet radiation, backed by a 10-year UV warranty.
- Impact Resistance: Over 200 times stronger than glass and far more durable than standard acrylic panels, virtually unbreakable under normal operating conditions.
- Fire Resistance (B1 Level): Compliant with B1 flame retardant standard (GB8624-97), self extinguishing upon removal of the ignition source.
- Sound Insulation: Engineered to reduce ambient noise by 10–20 decibels, suitable for urban, commercial, and industrial environments.
- Thermal Insulation: The twin wall hollow structure traps an air layer between panels, providing effective insulation in both hot and cold climates.
Product Specifications:
- Thickness: 4, 5, 6, 8, and 10mm Twin-wall
- Size (width by length): 2100mm × 6000mm
- Available Colors: Clear, Opal, Light Blue, Lake Blue, Green, Bronze, Beige
- Cut-to-size polycarbonate sheets are available for project specific requirements.
- Custom sizes and bulk orders welcomed for large scale projects.
Applications:
Our 4mm twin wall polycarbonate sheets and multiwall polycarbonate panels are widely used across commercial and industrial construction projects:
- Carports and Parking Canopies: Lightweight yet strong, reducing structural load and cutting installation time at scale.
- Greenhouse Roofing: Optimal light diffusion supports year-round plant growth while maintaining stable internal temperatures.
- Skylights and Roof Glazing: Introduces consistent natural light into warehouses, factories, and commercial buildings without excessive heat gain.
- Swimming Pool Enclosures: UV resistant and moisture proof, maintaining structural integrity in high humidity environments.
- Sunrooms and Patio Covers: Delivers comfortable indoor outdoor spaces with natural light and full weather protection.
- Sports Facilities and Stadiums: Impact resistant polycarbonate roofing panels perform reliably across large span structures.
- Signage and Display Boards: High light transmission with weather resistance ensures long lasting visibility in outdoor installations.
Factory Direct Supply Advantages:
- Factory direct pricing eliminates middlemen, reducing procurement costs for bulk orders
- Flexible MOQ tailored to individual project requirements
- Full customization: thickness, sheet dimensions, color, and UV coating specifications
- Professional export packaging with reliable international lead times
- Complete technical documentation for customs clearance and project compliance
- Dedicated account support for distributors and repeat buyers
Frequently Asked Questions:
Q: What is the difference between twin wall and multiwall polycarbonate sheets?
A: Twin wall polycarbonate sheets have two layers with a single hollow chamber, making them lightweight and cost effective for standard roofing and glazing. Multiwall sheets have three or more layers, offering greater insulation and structural strength for heavier duty applications.
Q: Can you supply 4mm polycarbonate sheets cut to custom sizes?
A: Yes. We provide cut to size service for project specific requirements. Standard sheets are 2100mm × 6000mm, and custom dimensions are available for bulk orders.
Q: What UV protection does the 4mm twin wall sheet offer?
A: Each sheet features a 50 micron coextruded UV protective layer on both surfaces, blocking harmful ultraviolet radiation and backed by a 10 year UV warranty against yellowing and degradation.
Q: Is a 4mm polycarbonate sheet suitable for greenhouse roofing?
A: Yes. The 4mm twin wall structure delivers an excellent balance of light transmission, thermal insulation, and impact resistance one of the most widely used thicknesses for commercial and residential greenhouse panels.
Q: What certifications do ProPCMaterial sheets carry?
A: Our products are tested by HAP Testing Service, accredited by CNAS and recognized under the ILAC-MRA international framework, meeting JC/T 116-2012 standards.
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Ready to source 4mm twin wall polycarbonate sheets? Contact ProPCMaterial today for factory direct pricing, product samples, and custom quotes. We serve distributors, contractors, and procurement teams across the US, Europe, the Middle East, and Australia.