As construction technologies evolve, builders, architects, and project developers are turning to materials that offer high performance with lower weight and greater energy savings. Twin wall polycarbonate is one of the most advanced materials in this category, combining thermal insulation, impact resistance, and light transmission in a cost-effective, easy-to-install format.
At G-Crystal Plastic Industries, we manufacture and export high-quality twin wall polycarbonate sheets tailored for commercial, industrial, and agricultural roofing and cladding applications. With exports to over 60 countries, we understand the performance needs of large-scale projects and offer reliable solutions for demanding environments.
What Is Twin Wall Polycarbonate?
Twin wall polycarbonate is a structured plastic sheet composed of two outer polycarbonate layers separated by a vertical ribbing system. This configuration creates an air gap, which enhances insulation, reduces weight, and improves mechanical strength.
These sheets typically range from 4mm to 10mm in thickness and are known for being lightweight, semi-transparent, and highly durable. Their cellular structure is especially valuable in regions with extreme weather conditions or in buildings where energy efficiency is critical.
Key Benefits of Twin Wall Polycarbonate
- Thermal Insulation: The air space between the layers reduces heat transfer significantly, helping maintain comfortable temperatures indoors. This is essential for greenhouses, industrial roofs, and skylights.
- Lightweight Yet Strong: Twin wall panels weigh much less than glass or solid polycarbonate sheets but still resist impacts, hail, and bending — making transportation and installation faster and safer.
- UV Protection: All G-Crystal twin wall sheets are coated with UV-resistant layers, blocking harmful radiation and preserving panel clarity and strength for years.
- Sound Dampening: The ribbed hollow structure also helps reduce sound transmission, making it ideal for urban, residential, or semi-industrial use.
- Moisture and Chemical Resistance: These sheets do not absorb moisture and are resistant to rust, mold, and chemical exposure — ideal for tropical, coastal, or high-humidity zones.
- Eco-Friendly and Long-Lasting: Manufactured under ISO 14001 standards, G-Crystal panels are 100% recyclable and built to last over 15 years, even in harsh climates.
Standard Sizes and Options for Twin Wall Polycarbonate Sheets
At G-Crystal Plastic Industries, we provide a full range of twin wall polycarbonate sheets designed for wholesale buyers, construction companies, and agricultural projects.
| Specification | Available Options |
|---|---|
| Thickness | 4mm, 6mm, 8mm, 10mm (other sizes on request) |
| Width | 1050 mm, 1220 mm, 2100 mm |
| Length | 6m, 12m, or cut-to-size |
| Colors | Clear, Opal, Blue, Bronze, Grey, Green, Custom RAL colors |
| UV Coating | Single-sided or double-sided UV protection |
| Special Treatments | Anti-condensation, Anti-scratch, Anti-fog |
Best Use Cases for Twin Wall Polycarbonate Sheets
Twin wall polycarbonate sheets combine strength, insulation, and light transmission, making them suitable for a wide range of projects:
- Greenhouses & Agriculture: Maintain stable temperatures, block harmful UV rays, and promote crop growth with reduced energy use.
- Industrial & Commercial Roofing: Perfect for warehouses, factories, and malls, providing natural daylighting and long-lasting durability.
- Pergolas & Outdoor Projects: Add protection from rain and sunlight while keeping outdoor spaces bright and attractive.
- Skylights & Canopies: Allow natural light indoors, reduce heat, and improve building energy efficiency.
- Partitions & Sound Barriers: Effective acoustic insulation for highways, factories, and office dividers.
- Signage & Displays: Lightweight yet strong, ideal for advertising boards, exhibitions, and illuminated signs.
Installation and Accessories for Twin Wall Polycarbonate Sheets
Proper installation ensures the performance and lifespan of twin wall polycarbonate sheets. At G-Crystal Plastic Industries, we support every shipment with technical guidance and optional accessories tailored for professional roofing and cladding systems.
Key Installation Guidelines
- Frame: Use aluminum or galvanized steel for long-term corrosion resistance and structural strength.
- Orientation: The sheet’s internal ribs must run vertically to ensure proper water drainage and reduce condensation buildup.
- Thermal Expansion: Leave space (~3 mm per meter) to accommodate expansion due to heat. Use oversized holes for screws.
- Cutting and Cleaning: Cut with a fine-tooth circular saw and clean flutes using compressed air.
- End Sealing: Apply aluminum tape to the top edge and vent tape to the bottom to prevent dust, insects, and moisture accumulation.
- Fastening: Use UV-resistant screws with neoprene washers. Avoid overtightening.
- Roof Slope: Roofs should be sloped at 10° or more to enable efficient rainwater runoff.
Case Study: Hydroponic Greenhouses in Romania
A hydroponic farming company in Romania installed 8mm twin wall polycarbonate sheets over 15,000 m² of growing tunnels. The region experiences high humidity, intense sunlight, and frequent seasonal rains.
Results After 12 Months:
- Reduced HVAC costs by 30%
- Increased crop yield by 18%
- No panel replacements needed
- Clear light penetration maintained without discoloration
Certifications and Global Compliance
All products from G-Crystal Plastic Industries come with international certifications:
- CE Marking (European conformity)
- ISO 9001 – Quality Management
- ISO 14001 – Environmental Management
- ISO 45001 – Health & Safety Standards
We serve projects across Europe, Africa, Latin America, and the Middle East, providing full export documentation, container optimization, and bilingual support for our clients.
Why Choose G-Crystal for Twin Wall Polycarbonate?
As a global leader in polycarbonate solutions, G-Crystal Plastic Industries provides:
- Bulk FOB pricing for importers and project contractors
- Custom production options for color, size, and thickness
- Technical support, samples, and marketing material
- Shipping to over 60 countries with short lead times
We help our partners succeed by offering the highest quality polycarbonate roofing systems that stand the test of time.
Request a Custom Quote or Sample
Looking for a reliable twin wall polycarbonate sheet supplier? Contact G-Crystal Plastic Industries today to receive:
- Free catalogs and spec sheets
- Custom-cut solutions for your structure
- Competitive pricing for full-container or pallet orders
- Full accessory kits and support for installation
Export at G-Crystal Plastic Industries
G-Crystal Plastic Industries exports polycarbonate sheets to more than 60 countries worldwide, backed by European quality certification and three ISO certifications. We provide flexible export solutions tailored to the needs of companies, wholesalers, and importers everywhere.
Available Export Options:
- EXW: Goods collected directly from our factory.
- FOB: Delivery to the port of export and loading onto the vessel.
- CFR: Sea freight covered up to the port of destination.
- CIF: Sea freight and insurance included up to the port of destination.
With our expertise in both sea and air freight, we ensure that our products reach customers on time and in perfect condition, while offering full support throughout the export process.
📩 Contact us today for exclusive wholesale offers and benefit from our global export experience.
Frequently Asked Questions About Twin Wall Polycarbonate Sheets
What is the minimum order quantity for twin wall polycarbonate sheets?
The minimum order quantity depends on the market, but for wholesale and B2B buyers, G-Crystal Plastic Industries usually supplies twin wall polycarbonate sheets by pallet or full-container load to ensure competitive FOB pricing.
How are twin wall polycarbonate sheets shipped internationally?
We export twin wall polycarbonate sheets to over 60 countries worldwide. Orders are shipped FOB from our port with full export documentation, optimized container loading, and coordination with your freight forwarder.
What payment terms are available for wholesale buyers?
We accept standard B2B payment terms such as T/T (bank transfer) and L/C (Letter of Credit). Flexible arrangements can be discussed for long-term distributors and import partners.
Can I order custom sizes or colors of twin wall polycarbonate sheets?
Yes. G-Crystal Plastic Industries can produce custom dimensions, RAL colors, and special coatings like anti-fog, anti-scratch, and double UV protection for bulk and wholesale orders.
Do you provide samples before placing a bulk order?
Yes, we provide small samples of twin wall polycarbonate sheets for testing and evaluation, helping wholesale buyers confirm clarity, strength, and durability before making large purchases.
