{"id":4970,"date":"2026-06-23T14:48:54","date_gmt":"2026-06-23T06:48:54","guid":{"rendered":"https:\/\/yoochenplastic.com\/?p=4970"},"modified":"2026-06-23T14:50:46","modified_gmt":"2026-06-23T06:50:46","slug":"hollow-polycarbonate-sheet-vs-solid-polycarbonate-sheet","status":"publish","type":"post","link":"https:\/\/yoochenplastic.com\/tr\/knowledge-news\/hollow-polycarbonate-sheet-vs-solid-polycarbonate-sheet\/","title":{"rendered":"Hollow Polycarbonate Sheet VS Solid Polycarbonate Sheet: Complete Material Selection Guide For Indoor & Outdoor Projects"},"content":{"rendered":"

For construction contractors, agricultural greenhouse manufacturers, factory equipment designers, new energy charging station suppliers, residential decoration engineers and global foreign trade procurement buyers, the most confusing material selection problem when purchasing transparent polycarbonate roofing and protective panels is choosing between hollow polycarbonate sheet<\/a><\/strong>\u00a0(twin wall polycarbonate sheet<\/strong>\u00a0\/ multiwall polycarbonate sheet) <\/strong>ve solid polycarbonate sheet<\/a>\u00a0(solid PC sheet)<\/strong>.<\/p>\n\n\n\n

Both products are manufactured with pure polycarbonate raw resin, equipped with double-sided UV co-extrusion anti-aging coating as outdoor grade, with ultra-high impact resistance, wide temperature adaptability and long outdoor service life up to 10\u201315 years. On the surface, they are both transparent plastic substitutes for glass, widely applied on skylight roofing, balcony canopy, agricultural greenhouses, safety isolation barriers, carports, bus station shelters and industrial equipment transparent shields. <\/p>\n\n\n\n

However, their internal structure is completely different: hollow polycarbonate sheet\u00a0adopts a multi-layer cellular hollow structure, while solid polycarbonate sheet\u00a0is a single-layer solid integral plate. This structural difference leads to huge gaps in weight, raw material cost, load-bearing capacity, hail resistance, heat insulation, sound insulation, bending processing performance, installation difficulty and applicable service scenarios.<\/p>\n\n\n\n

A large number of buyers blindly pick cheap thin hollow polycarbonate sheet\u00a0for high wind, heavy snow, high impact safety projects only to save initial material budget. After one or two winter snow seasons or hail storms, the hollow panels crack, collapse and need full batch replacement, bringing massive labor disassembly cost, rework expense and brand reputation loss. <\/p>\n\n\n\n

This full-dimensional comparison guide breaks down every core performance index of hollow polycarbonate sheet\u00a0and\u00a0solid polycarbonate sheet\u00a0one by one, including raw price, self-weight, thermal insulation, anti-hail impact, snow load bearing, UV weather resistance, light transmittance, sound insulation, cold & hot bending processing limit, CNC drilling cutting performance, flame retardant safety, chemical resistance, installation difficulty, maintenance cycle and hundreds of real agricultural, residential, commercial, industrial, new energy application cases. All professional test data are interpreted with simple daily words without complex academic terminology. <\/p>\n\n\n\n

At the end of this article, we fully introduce our factory\u2019s one-stop deep custom processing service for both hollow multi-wall polycarbonate\u00a0sheet\u00a0and solid polycarbonate sheet. Supported by our full set of workshop machines fully upgraded and fully running in 2026, we can complete all cutting, bending, coating, and printing procedures in our own factory, helping global customers get finished installation-ready polycarbonate\u00a0parts without cooperating with multiple separate material suppliers and processing factories.<\/p>\n\n\n\n

Chapter 1 Basic Structural Definition & Core Feature Quick Preview<\/strong><\/strong><\/h2>\n\n\n\n

1.1 What Is Hollow Polycarbonate Sheet (Multi-Wall <\/strong>P<\/strong>olycarbonate<\/strong> <\/strong>Levha<\/strong>)<\/strong><\/strong><\/h3>\n\n\n\n
\"twin-wall<\/figure>\n\n\n\n

Hollow polycarbonate sheet<\/strong>, short name hollow PC sheet, cellular polycarbonate\u00a0sheet, is extruded by polycarbonate resin into an integrated multi-layer hollow cellular structure. The mainstream specifications on the market include 2-wall, 4-wall, 6-wall, honeycomb multi-wall hollow sheet, with common overall panel thicknesses from 4mm to 30mm. Each hollow sheet contains parallel vertical rib support strips connecting upper and lower transparent surface layers, forming air-closed hollow interlayers inside the sheet.<\/p>\n\n\n\n

The most prominent innate advantages of hollow polycarbonate sheet\u00a0come from its internal air interlayer structure: ultra-light self-weight, outstanding heat insulation and heat preservation performance, relatively low raw material per square meter cost, convenient manual transportation and installation without large lifting equipment. Its inherent defects are weak snow-load-bearing capacity, limited anti-hail performance, a small minimum cold-bending radius, a tendency to crack if overloaded or struck by large hailstones, and not suitable for high-wind, heavy-load safety-protection projects.<\/p>\n\n\n\n

We can produce transparent, smoke gray, milky white, green, and blue hollow polycarbonate sheets; outdoor double-sided UV anti-yellow grade hollow polycarbonate panels; and light-diffusion frosted hollow sheets\u00a0for greenhouse and skylight construction projects.<\/p>\n\n\n\n

1.2 What Is Solid Polycarbonate <\/strong>Levha<\/strong> (Solid Single-Layer <\/strong>P<\/strong>olycarbonate<\/strong> Sheet)<\/strong><\/strong><\/h3>\n\n\n\n
\"Polycarbonate<\/figure>\n\n\n\n

\u00a0Solid polycarbonate sheet<\/strong>, also known as a polycarbonate endurance sheet, is a single-layer integral solid plate extruded with pure polycarbonate resin without any internal hollow air interlayer. Conventional solid polycarbonate\u00a0sheet thickness ranges from 0.5mm thin insulating film to 18mm thick heavy-duty safety solid sheet, widely divided into standard transparent solid polycarbonate, double-sided UV weather-resistant solid polycarbonate, 3H\u20135H hard-coated anti-scratch solid polycarbonate, UL94 V0 flame-retardant electrical-grade solid polycarbonate, frosted light-diffusion solid polycarbonate\u00a0sheet.<\/p>\n\n\n\n

The core inherent strengths of\u00a0solid polycarbonate sheet\u00a0are ultra-high overall structural toughness, excellent hail impact resistance, heavy snow and wind load bearing capacity, wide cold bending forming range, stable dimensional deformation resistance under long-term outdoor load, can bear frequent accidental collision and heavy object impact without cracking. Its main weaknesses are heavier self-weight, higher raw material unit price per square meter, poorer thermal insulation effect compared with multi-wall hollow polycarbonate sheet, requiring more auxiliary support frames and labor during transportation and installation construction.<\/p>\n\n\n\n

Solid polycarbonate\u00a0sheet covers all safety protection, new energy, high wind public facility, and high impact industrial equipment application fields that hollow polycarbonate sheet\u00a0cannot adapt to.<\/p>\n\n\n\n

1.3 Quick Pros & Cons Summary Table Preview<\/strong><\/strong><\/h3>\n\n\n\n

Core Advantages of Multi-Wall Polycarbonate\u00a0Sheet<\/strong><\/h4>\n\n\n\n

\u2705 Ultra-light self-weight, only 1\/3 ~ 1\/5 weight of solid polycarbonate sheet with the same overall thickness<\/p>\n\n\n\n

\u2705 Closed hollow air interlayer brings excellent heat insulation & heat preservation effect, greatly reduces indoor cooling and heating energy consumption<\/p>\n\n\n\n

\u2705 Lower raw material cost per square meter, saves initial construction material budget for large-area roof projects<\/p>\n\n\n\n

\u2705 Lightweight, easy manual handling, transportation and quick installation, less auxiliary steel support frame required<\/p>\n\n\n\n

\u2705 Multiple wall structures have better medium-frequency sound insulation performance, weakening outdoor rain and wind noise transmission<\/p>\n\n\n\n

\u2705 Rich color options, adjustable light transmittance by selecting frosted or tinted hollow sheet for greenhouses and skylights<\/p>\n\n\n\n

\u2705 Large-area continuous laying for agricultural greenhouses, mall daylight roofs, residential carport can shorten construction period obviously<\/p>\n\n\n\n

Main Disadvantages of Hollow Polycarbonate\u00a0Sheet<\/strong><\/h4>\n\n\n\n

\u274c Weak load-bearing capacity, thin twin wall polycarbonate sheet<\/a>\u00a0is easy to crack and collapse under heavy snow accumulation<\/p>\n\n\n\n

\u274c Inferior anti-hail impact performance, large size hailstones will pierce the surface layer and break internal support ribs<\/p>\n\n\n\n

\u274c Small minimum cold bending radius, cannot make tight small arc curved skylight and curved protective covers<\/p>\n\n\n\n

\u274c Internal hollow ribs will form dirt and water storage gaps after long-term use, hard to fully clean dust and moss<\/p>\n\n\n\n

\u274c Thin hollow panels are easy to produce wind vibration resonance under strong wind for long time, accelerating aging cracking<\/p>\n\n\n\n

\u274c Not suitable for high-impact safety isolation, public anti-vandalism barriers, heavy load industrial outdoor protection structures<\/p>\n\n\n\n

Core Advantages of Solid Polycarbonate <\/strong>Levha<\/strong><\/strong><\/h4>\n\n\n\n

\u2705 Integral solid structure, ultra-high impact & hail resistance, even large hailstones only leave tiny shallow dents without penetration crack<\/p>\n\n\n\n

\u2705 Strong snow and wind load bearing capacity, thick solid polycarbonate\u00a0can withstand heavy snow and typhoon-level strong wind without deformation or collapse<\/p>\n\n\n\n

\u2705 Wide cold bending forming range, minimum bending radius only 1.5 times sheet thickness, can make small radian curved housings and arc canopies freely<\/p>\n\n\n\n

\u2705 No internal hollow interlayer, flat seamless surface, not easy to store dirt, moss and rainwater, simple daily cleaning maintenance<\/p>\n\n\n\n

\u2705 High overall structural rigidity, no wind resonance vibration under long-term strong wind exposure, slow aging speed<\/p>\n\n\n\n

\u2705 Wide application coverage: outdoor high wind public facilities, machine safety guards, new energy charging pile panels, anti-hail factory roofs, high-rise balcony safety barriers<\/p>\n\n\n\n

\u2705 Hard-coated solid polycarbonate\u00a0version available, scratch-resistant for high-frequency touch shared equipment<\/p>\n\n\n\n

\u2705 Customizable UL94 V0 highest flame retardant grade for electrical and public building fire safety requirements<\/p>\n\n\n\n

Main Disadvantages of Solid Polycarbonate\u00a0Sheet<\/strong><\/h4>\n\n\n\n

\u274c Much heavier self-weight than hollow polycarbonate sheet of equal thickness, increases transportation labor and installation steel frame cost<\/p>\n\n\n\n

\u274c Higher raw material per square meter price, large-area full roof laying will raise total initial construction investment<\/p>\n\n\n\n

\u274c Single solid layer without air interlayer, thermal insulation and heat preservation performance far lower than multi-wall hollow polycarbonate sheet<\/p>\n\n\n\n

\u274c Large-area full laying project needs dense auxiliary steel support keel to prevent long-term sagging deformation, more construction auxiliary materials required<\/p>\n\n\n\n

Chapter 2 Raw Material Cost & Self-Weight Full Comparison<\/strong><\/strong><\/h2>\n\n\n\n

Most construction buyers only compare the unit price of polycarbonate panels and ignore the subsequent supporting steel frame cost, installation labor expense, snow damage replacement loss in later years. We split the comparison into two dimensions: per square meter raw material purchase cost and self-weight load difference affecting construction auxiliary material investment.<\/p>\n\n\n\n

2.1 Per Square Meter Raw Material Price Contrast (Same overall panel thickness 6mm as benchmark)<\/strong><\/strong><\/h3>\n\n\n\n
    \n
  1. Twin wall polycarbonate sheet\u00a0(6mm total thickness): Lowest raw material cost per square meter, taken as 100% cost baseline<\/li>\n\n\n\n
  2. 4-wall hollow polycarbonate sheet\u00a0(6mm total thickness): Raw cost 12%\u201320% higher than twin wall polycarbonate\u00a0sheet, better heat insulation and load bearing<\/li>\n\n\n\n
  3. Standard transparent solid polycarbonate sheet\u00a0(6mm thickness): Raw material unit price 45%\u201375% higher than 6mm twin wall polycarbonate sheet<\/li>\n\n\n\n
  4. Double-sided UV outdoor grade solid polycarbonate\u00a0sheet: Cost 60%\u201395% higher than basic twin wall polycarbonate\u00a0sheet<\/li>\n\n\n\n
  5. UV + hard-coated thick solid polycarbonate\u00a0safety sheet\u00a0(8\u201312mm): Unit price 110%\u2013180% higher than 6mm two-layer hollow polycarbonate\u00a0panel<\/li>\n<\/ol>\n\n\n\n

    Data explanation: For ultra-large area greenhouse, mall daylight roof, low snow load southern residential carport projects without hail disaster risk, selecting hollow polycarbonate sheet can greatly reduce one-time raw material procurement expenditure, which is the biggest economic advantage of hollow multi-wall polycarbonate panel.<\/p>\n\n\n\n

    2.2 Self-Weight Load Comparison (Per Square Meter Weight Data)<\/strong><\/strong><\/h3>\n\n\n\n

    Take 6mm overall thickness as unified comparison standard:<\/p>\n\n\n\n