Choosing the right polycarbonate sheet isn’t always straightforward. With solid, multiwall, corrugated, hard coated, and tinted options all available — each with different thermal, optical, and mechanical properties — it’s important to match the product to your specific application. Here are the seven key factors to consider.
1. Sheet Type & Format
The first decision is which type of polycarbonate sheet suits your application:
- Solid polycarbonate — maximum clarity and impact resistance; ideal for glazing, skylights, partitions, and safety barriers
- Twin-wall & multiwall — superior thermal insulation; ideal for roofing, greenhouses, and pergolas
- Corrugated — lightweight and cost-effective; matches standard metal roofing profiles for sheds, carports, and awnings
- Hard coated / abrasion resistant — enhanced scratch resistance; ideal for high-traffic glazing, transport, and signage
Also consider tint: clear for maximum light, grey or bronze for solar control, opal for diffused light.
2. Thermal Properties
If your application involves temperature control — greenhouses, pergolas, commercial buildings — thermal performance is critical:
- Thermal expansion — polycarbonate expands and contracts with temperature; always allow adequate clearance in fixings and frames
- Service temperature — most polycarbonate sheets perform from -50°C to +120°C
- Insulation value (U-value / R-value) — multiwall sheets with more air chambers deliver better thermal insulation; critical for energy efficiency in roofing and glazing applications
3. Optical Properties
Light transmission and solar control vary significantly between sheet types:
- Light transmittance — solid clear sheets transmit up to 89%; opal multiwall around 40–60%
- Solar heat gain coefficient — tinted sheets reduce solar heat gain, keeping spaces cooler in summer
- Light diffusion — opal and frosted sheets diffuse light evenly, eliminating hot spots; important for greenhouses and skylights
- UV protection — all ExcelitePlas sheets include a UV-protective coating; check which side faces up during installation
4. Mechanical & Technical Properties
For structural and safety-critical applications, review the product data sheet for:
- Impact resistance — solid polycarbonate is up to 250x stronger than glass
- Flexural strength — important for spanning between purlins without excessive deflection
- Fire rating — most polycarbonate sheets are rated B1 (fire retardant)
- Acoustic performance — multiwall sheets can achieve up to 40dB sound reduction
- Chemical resistance — important for industrial or agricultural environments
5. Installation Requirements
Before purchasing, consider how the sheet will be installed:
- Cutting — polycarbonate can be cut on-site with a circular saw or jigsaw; no specialist tools required
- Fixing method — use purpose-made polycarbonate screws with neoprene washers; never over-tighten
- Expansion allowance — pre-drill oversized holes to allow for thermal movement
- Storage — store flat, away from direct sunlight, with protective film intact until installation
- Cleaning — use mild soap and water only; avoid abrasive cleaners or solvents
6. Budget & Long-Term Value
Polycarbonate sheet is a premium material — but its durability, impact resistance, and low maintenance make it cost-effective over the long term. Consider:
- Solid sheets cost more upfront but offer the highest strength and clarity
- Multiwall sheets are more affordable for large roof areas while delivering better insulation than solid
- Corrugated sheets are the most budget-friendly option for simple roofing applications
- All ExcelitePlas sheets come with a warranty — check the product listing for details
7. Supplier Reliability
When choosing a polycarbonate supplier, look for:
- Experience & reputation — a proven track record with verifiable customer reviews
- Product warranty — UV protection should always be covered
- Cut-to-size service — reduces waste and simplifies installation
- Fast, reliable delivery — especially important for time-sensitive projects
- Expert advice — a knowledgeable team that can help you select the right product
Need Help Choosing?
ExcelitePlas has been supplying polycarbonate and acrylic sheets across Australia for over 15 years. Our team can help you identify the right sheet type, thickness, and tint for your specific application — whether it’s a backyard pergola, commercial skylight, or industrial partition.
Contact us on 0452 396 680 or email angela@exceliteplas.com.au — we’re happy to help.
