Flame retardant corrugated polycarbonate sheet is a professional-grade roofing and cladding material made for areas where fire safety is required by law, not just desired. Contrary to regular polycarbonate, it adds flame-retardant chemicals that are based on phosphorus or halogen straight into the plastic. This gives it a Limiting Oxygen Index (LOI) of ≥28% and a reaction that goes out on its own when the flame source is taken away. Either wavy or triangular corrugation gives the structure support and good water flow, making it a good choice for large-scale industrial and business roofs.
According to ISO 9001, CE, RoHS, and SGS, the sheets are made by Baoding Sinhai Sunboard Manufacturing Co., Ltd. in a number of factories.
Normal polycarbonate will catch fire and shoot out fiery drops if left near an open flame. The spread of fire from these drops is a big problem in places like power plants, stores, and workplaces that have flammable materials or equipment.
This paper looks at the problem from a practical point of view. Because the flame-retardant chemicals are mixed into the polycarbonate resin during extrusion instead of being added as a surface layer, the panel's fire-retardant properties stay the same throughout its width. In the end, a fire- and impact-resistant sheet that meets UL94 V-2 and B1 (GB 8624) standards is made.
There is no link between the chemical that puts out fires and the contribution of the corrugated geometry. Because the structural force is spread across the panel's width, panels with a wavy or trapezoidal rib pattern may be able to handle wind uplift and hail loads that would damage or break a flat sheet of the same thickness.
| Parameter | Value |
|---|---|
| Thickness | 0.6–3.0 mm (common: 0.8 / 1.0 / 1.2 / 1.5 / 2.0 mm) |
| Effective Width | 840 / 930 / 960 / 1050 mm (overlap) |
| Length | Cut to order |
| Resin | 100% virgin Bayer / Sabic polycarbonate |
| UV Co-extrusion Layer | 50 µm (blocks UV below 380 nm) |
| Anti-UV Rate | 98%–100% |
| Light Transmission | 0%–90% (varies by color and surface finish) |
| Impact Strength | 850 J/m |
| Service Temperature | −40°C to +120°C |
| Fire Rating | B1 (GB 8624) / UL94 V-2 |
| Limiting Oxygen Index | ≥28% |
| Corrugation Profile | Wavy and trapezoidal; 70+ moulds available |
| Certifications | ISO 9001 / SGS / CE / RoHS |
Fire ratings that may be found in project paperwork. The Flame retardant corrugated polycarbonate sheet meets the requirements of GB 8624 B1 and UL94 V-2. V-2: This means that the panel will stop burning when the flame source is removed and there is no persistent burning. If your project specification is V-0, talk to us about the right grade.
Stable across a broad temperature range. The rated service range is -40°C to +120°C so it may be used in cold-climate installations as well as on hot industrial roofs where metal cladding would expand or bend. Dimensional stability is maintained across this range without extra treatment.
High impact strength. The panels have been tested at 850 J/m (ASTM D256 or equivalent) and have shown to be impact resistant to tools, debris and hail without breaking. The corrugated design spreads point loads over the rib structure, which leads to a good performance of the sheet under static and dynamic stress.
Surface incorporated UV protection. A 50 µm co-extruded UV blocking layer prevents wavelengths below 380 nm. It resists yellowing, maintains light transmission over time and protects the underlying resin, including flame retardant chemicals, from UV deterioration.
Watertight installation for overlapping widths. Tight side couplings are possible with overlap widths of 840, 930, 960 and 1050 mm. For solid long-term performance, use EPDM-washered self-tapping screws and limit purlin spans to 1.5 m.
Power plants and industrial workshops. Fire code compliance is needed for wall cladding and skylights. Because it is flame resistant, the facade won't become a source of fuel during an accident, and the curved form can handle wind loads on large open-span buildings.
Warehouses and places where goods are sent out. There are fire code, daylighting, and large span roofing issues to think about. Up to 90% light transfer means you don't need as much artificial lighting during the day, and the B1 and V2 grades meet most regional fire safety standards for buildings.
Hubs for transport and train stations. Roofing and covered walkways in places where laws require minimum smoke production and self-extinguishing behaviour to make sure people can safely leave the building. Before you make a decision, talk to your project engineer about the appropriate standards (for example, EN 45545-2).
Sunrooms and greenhouses for business use. Buildings that use electricity for lighting or heating must meet certain fire safety standards. The light range that these sheets provide is perfect for plant growth, and they also meet current building standards.
Seating, canopies, and carports for stadiums. Between 0.6-3.0 mm thick, you can find thin glazing for canopies to bigger roof panels for public events.
Each batch of production must pass through four inspection steps before being shipped:
A Batch Test Report (MTR) verifying thickness, rib spacing and resin quality is available on request with your purchase.
Flame retardant corrugated polycarbonate sheet is one of our core products. We have 70+ corrugation moulds in stock, so we can match most of the typical roofing profiles with no extra tooling expense. OEM and ODM services such as CNC cutting, film coating, bending, special-shaped cutting and thermoforming are also provided for it.
Standard standards are generated within around 7 days. The Kashgar manufacturing site serves orders for Central Asian markets and delivery from this location is expected to take around 7 days. The presence of regional stock supplies in Tashkent and Dushanbe adds another layer of flexibility to emergency needs.
We can ship via boat, road or air freight and will also handle customs clearance.
Q: To begin, what kinds of corrugation patterns and useful sizes are out there?
A: Some of the profiles that can be used are large wave, medium wave, small wave, and trapezoidal. Around 840, 930, 960, and 1050 mm are the useful overlap widths. Between 0.6 mm and 3.0 mm thick, most people order between 0.8 mm and 2.0 mm thick.
Q: When there is wind lifting and hail, how does the sheet hold up?
A: As long as the sheet is put up properly, it should be able to handle high winds and 25 mm snow. For reliable performance, put in EPDM-washered self-tapping screws using a corrugated overlap method, and don't let the longest purlin span go over 1.5 m.
Q: Why is a V-2 fire rating better than a V-0 fire rating?
A: V-0 needs to stop burning within 10 seconds with no flaming drips in order to pass UL94 tests on a vertical specimen. While V-2 lets flames drip, it also sets a time limit for when the burning must stop. GB 8624 B1 and V-2 are met by the basic model. Please get in touch with us to talk about your choices if your project needs V-0.
Q: What about the flame-retardant additive? Does it change how much light gets through?
A: In clear versions, up to 90% of light can pass through when 100% virgin Bayer or Sabic resin is used. This risk is lower when you use pure glue instead of lower-grade added chemicals.
Q: When something is flame-resistant, does it lose its effectiveness over time?
A: Normal cleaning won't get rid of the additives because they are mixed into the glue during moulding instead of being put on the surface. Chemicals or solvents that are rough or abrasive should not be used because they could damage the co-extruded surface layer. Over time, this damage could affect how well the material works.
Q: In order to make arched roofs, can the sheets be cold-curved?
A: Yes, Only 175 times the thickness of the sheet can be used as a minimum cold-bend radius. Stress cracking could happen if you bend the panel below this radius. This could affect the structure's strength and the way flame-retardant additives are spread across the panel's cross-section.
Have a project specification or need samples with flame retardant corrugated polycarbonate sheet? Send your requirements to [email protected] and our team will respond with relevant technical details or a quote.
⭐⭐⭐⭐⭐ · August 12, 2026
Central Asia - Uzbekistan Focus (Customization & UV Resistance)
Impressive customization capabilities! We ordered the customized Double‑wall Narrow Grid sheets with Double Circular Edges for our recent urban project in Tashkent. The fit and finish are exceptional. Most importantly, the use of high‑quality 3R virgin raw materials provides the thermal stability and UV protection needed for the intense Uzbek sun. A top‑tier partner for Central Asian infrastructure.
⭐⭐⭐⭐⭐ · July 25, 2026
South America - Corrugated Selection (Volume & Patent)
The best selection of corrugated profiles in the market. Having access to 70+ free molds saved us significant tooling costs. We are extremely pleased with the Trapezoidal 1000 and the 1060 Wave/Trapezoidal sheets in Bronze and Yellow; there is zero color deviation across the entire batch. Furthermore, their Patented Reed Sheets have given our architectural projects a unique, high‑end texture that no other supplier can offer.
⭐⭐⭐⭐⭐ · June 18, 2026
Southeast Asia - Solid Sheet (Durability)
Our go‑to supplier for Solid Polycarbonate Sheets. In the humid and high‑heat environment of Southeast Asia, these solid panels maintain perfect transparency and high impact resistance. The quality of the resin is evident, and the service is always efficient。