Twinwall Polycarbonate Sheet for Roofing & Greenhouses

Twinwall Polycarbonate Sheet Video

Twinwall Polycarbonate Sheets for Roofing and Greenhouses

HSQY twinwall polycarbonate sheet is a lightweight, hollow polycarbonate panel with two outer walls connected by internal ribs. This structure combines natural daylight transmission, impact resistance and thermal insulation, making it a practical choice for greenhouses, skylights, patio roofs, canopies and covered walkways.

Also called twin-wall PC sheet or hollow polycarbonate sheet, it is supplied in clear and colored options for building-material distributors, glazing contractors, greenhouse builders and industrial project buyers. Select the thickness, color and protection grade to suit your glazing system and project conditions.

Common HSQY twinwall sheet options include 4, 5, 6, 8 and 10 mm thicknesses with a nominal width of 2100 mm. Sheet length, UV-protection configuration and order-specific requirements should be confirmed before production.

Request a Twinwall PC Sheet Quote

Twinwall Polycarbonate Sheet Specifications

Specifications may vary by grade and production requirements. For a technical comparison, request the relevant sheet weight, light-transmission data, thermal transmittance (U-value), UV-protection details and load-span information for the specific thickness and color.

Key Benefits of Twinwall Polycarbonate Sheets

Natural light transmission: The clear and tinted grades allow daylight into roofing and glazing areas. Actual light transmission depends on sheet thickness, tint and structure.

Thermal insulation: Air-filled channels between the two walls reduce heat transfer compared with an equivalent single solid layer. Ask for the U-value of the selected grade when designing insulated glazing.

Impact-resistant construction: Polycarbonate is a tough glazing material that withstands everyday handling and impact better than many brittle alternatives. Roof design must still account for wind, snow and local building requirements.

Outdoor durability: UV-protected grades are available for outdoor installations. Confirm the protected side or sides and the installation orientation for your order.

Low weight: Hollow construction reduces panel weight, making the sheets easier to transport, handle and install than comparable solid glazing materials.

Flexible appearance: Clear, green, blue, bronze-like, opal and grey options allow buyers to balance visibility, privacy, diffusion and solar exposure.

Twinwall Polycarbonate Sheet Applications

Twinwall PC panels are used in agricultural, commercial and residential projects that require daylighting with a lightweight glazing material. The two-wall structure is especially useful when a balance of light transmission, handling and thermal performance is needed.

Greenhouse glazing: Roof and sidewall panels for horticultural structures where transmitted daylight and insulation matter.

Skylights and roofing: Daylighting panels for workshops, agricultural buildings and compatible roof framing systems.

Canopies and covered walkways: Lightweight covers for entrances, pedestrian passages, carports and patios.

Partitions and architectural glazing: Translucent or colored panels for interiors, light-diffusing enclosures and non-load-bearing applications.

How to Choose Twinwall Polycarbonate Sheet Thickness and Color

When comparing 4, 5, 6, 8 and 10 mm twinwall sheets, start with the proposed application, support spacing and design loads. A thicker panel is not automatically suitable for every span; structural performance depends on the specific sheet profile and installation system.

For daylight-focused projects: Clear sheets maximize visibility and transmitted daylight within the selected range. Opal and tinted grades can provide greater diffusion or reduced glare, depending on the grade.

For greenhouse applications: Consider the plant light requirements, condensation management, shading needs, and greenhouse support structure before selecting a color or thickness.

For roofs and canopies: Provide the span, local wind and snow design loads, required roof slope, attachment system, and dimensions so a compatible panel specification can be reviewed.

Discuss Your Project Requirements

Installation and Handling Guidelines

Correct installation is essential to the performance of hollow polycarbonate roofing and glazing. Follow the fixing-system supplier instructions and the technical guidance provided with the selected HSQY sheet grade.

Position the ribs along the slope: For roofing, orient the hollow channels down the slope so moisture can drain instead of accumulating inside the cells.

Face the UV-protected side outward: Follow the protective film markings and product-specific UV instructions; do not assume both sides have the same treatment.

Allow for thermal movement: Polycarbonate expands and contracts with temperature changes. Provide the clearance and fixing details specified for the sheet and framing system.

Use compatible profiles and edge sealing: Choose appropriate connection profiles, closure tapes and end profiles to support drainage and reduce dirt or insect entry into the hollow channels.

Check structural support: Purlin spacing, wind loads, snow loads and fastener spacing must be established from the selected panel data and applicable construction requirements.

Protect the sheet surface: Store panels flat and protected; avoid abrasive cleaning products, incompatible solvents and walking directly on installed panels.

Packaging and Delivery for Twinwall Polycarbonate Sheets

Sample packaging: Protective PE bags and cartons for sample quantities.

Sheet packaging: PE protective film or customized export packaging, depending on the order.

Pallet packaging: Plywood pallets; the original quoted pallet loading range is 500–2000 kg and should be confirmed for the selected sheet dimensions.

Container loading: Loading plans can be prepared for 20 ft and 40 ft containers according to panel sizes and quantities.

Delivery terms: FOB, CIF and EXW options can be discussed.

Indicative lead time: The stated production window is 7–15 days after deposit, subject to specification, order volume and production schedule.

Product Documentation and Quality Support

HSQY can discuss product specifications, packaging and available supporting documents for the selected sheet grade. Buyers requiring fire classification, light-transmission testing, UV resistance or other project documentation should specify the applicable test standard and intended market when requesting a quote.

About HSQY Plastic Group

HSQY Plastic Group supplies polycarbonate sheets and other plastic sheet materials to customers in construction, agriculture, industrial fabrication and distribution. The company states that it has more than 20 years of industry experience and eight factories.

Our sales team supports international buyers with thickness and color selection, project-based specifications, export packing arrangements and quotation assistance. Send your drawings or required dimensions so we can review the best available sheet configuration for your application.

Twinwall Polycarbonate Sheet FAQ

What is a twinwall polycarbonate sheet?

A twinwall polycarbonate sheet is a hollow panel made from polycarbonate resin. Two outer walls are joined by ribs, creating air-filled channels that provide rigidity with reduced weight and improved thermal insulation.

What is the difference between twinwall and solid polycarbonate?

Twinwall sheets have internal air channels and are typically chosen for lightweight, insulated glazing. Solid sheets have a continuous cross-section and are selected for other glazing and fabrication needs. The preferred option depends on impact, optical, structural and insulation requirements.

What thicknesses does HSQY offer?

HSQY twinwall sheet options include 4, 5, 6, 8 and 10 mm (2RS). Confirm grade availability and thickness tolerance before placing an order.

What width is available?

The standard width in this product range is 2100 mm. Please ask about cut-to-size sheets or other widths for your selected thickness and structure.

Are twinwall polycarbonate sheets suitable for greenhouses?

Yes. Twinwall panels are used for greenhouse roofs and sidewalls because they transmit daylight and provide an insulating air space. The chosen thickness and color should meet the greenhouse design and crop requirements.

How much light does a twinwall polycarbonate sheet transmit?

Light transmission varies with thickness, color, sheet structure and surface treatment. Request data for the exact grade rather than applying a single transmission percentage to all sheets.

Is UV protection available?

UV-protected polycarbonate grades can be selected for outdoor applications. Confirm whether protection is supplied on one side or both sides and install the protected face as directed.

Can twinwall polycarbonate sheet be used for roofing?

Yes, in a roofing system designed for the selected panel. Check support spacing, wind and snow loads, roof pitch, connection profiles and thermal movement allowances before installation.

Can HSQY provide custom colors and sheet lengths?

HSQY lists clear, green, lake blue, blue, emerald, brown, grass green, opal, grey and custom colors. Please submit your preferred length, color, thickness and quantity for an availability check.

How should hollow polycarbonate sheets be installed?

For sloped roofing, orient the ribs in the direction of drainage, keep the specified UV-protected face outward, use compatible edge tapes and profiles, and allow the clearance required for expansion and contraction.

What is the typical lead time?

Typical lead time is 7–15 days after deposit. The final schedule depends on specification, order quantity and current production capacity.

What information is needed for a quotation?

Please provide the sheet thickness, width and length, color, quantity, project application, required documents, destination port and any installation drawings or performance criteria.

Get a Quote for Twinwall Polycarbonate Sheets