16mm Multiwall Polycarbonate Sheets – Roofing Projects Requiring Greater Insulation
16mm multiwall polycarbonate is a premium-grade glazing material engineered for large roofing projects requiring superior structural strength and thermal insulation. With 10 internal walls and enhanced hollow-chamber design, 16mm sheets deliver exceptional durability and energy efficiency compared to thinner profiles.
Available in clear, opal, and bronze finishes, 16mm multiwall polycarbonate is ideal for applications demanding maximum performance. The material features UV-protected co-extruded layers and is Class 1 fire-rated for safety. With 250x impact resistance vs. glass and 80%+ light transmission, 16mm offers the ideal balance of clarity, strength, and insulation. Easily cut with a stanley knife or jigsaw using standard tools.
Typical Applications: Large roofing projects with extended unsupported spans (4+ meters), commercial canopies, industrial glazing systems, large greenhouses requiring additional insulation, high-exposure architectural installations, and premium residential roofing. For pergolas and lean-tos, see our 10mm thickness. For smaller projects, see our 6mm thickness.
Get an Instant Quote for Your Roofing Project
Use our multiwall polycarbonate roof calculator to design your project and receive an instant quote. Select your roof type, enter your dimensions, and get a complete quote for all 16mm sheets and accessories needed. For large or complex projects, call us on 01 8010022 or email [email protected] for expert consultation.
For technical information, installation guides, and performance specifications, visit our How To Multiwall Roofing Guide
16mm Multiwall Polycarbonate
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16mm Polycarbonate Sheet Triplewall - Opal 3500mm x 2100mm
€201.00 excl. VATSheet Size: 3500mm x 2100mm
Sheet Thickness: 16mm
Sheet Colour: Opal16mm opal triplewall polycarbonate roofing sheets — lightweight and 200 times stronger than glass, with enhanced thermal insulation over standard twinwall. The popular choice for conservatories, carports and canopy roofs where diffused light, glare reduction and privacy matter. 42% light transmission and a 2.40 W/m²K U-value. Maximum rafter spacing 1050mm.
Free cut to size service on all multiwall polycarbonate sheets (square and rectangle cuts).
Benefits of 16mm Multiwall Polycarbonate Sheets
Superior Impact Resistance
250x stronger than glass. Excellent protection against hailstones, vandalism & accidental damage—ideal for exposed roofing applications.
Exceptional Structural Strength
Triplewall profile (3 internal walls) supports large unsupported spans (4+ meters) and handles significant wind & snow loads without intermediate support.
Maximum Thermal Insulation
Deep hollow chambers reduce heat loss by vs. 10mm multiwall. Superior temperature control for year-round climate-critical applications.
Fire Resistance
Class 1 fire-rated (EN 13823). Independently tested & certified for safety in residential and commercial installations.
Excellent Light Transmission
80%+ light penetration maintained throughout the life of the sheet. Clear, diffuse light without harsh glare or significant shadow.
Lightweight & Easy Installation
Despite superior strength, 16mm remains significantly lighter than glass or solid materials. Can be cut with stanley knife or jigsaw—no specialized tools needed.
16mm vs. 10mm vs. 25mm: Thickness Comparison
10mm
Structural: Good
Insulation: Better
Cost: Mid-range
Max Span: 3–4m
Best For: Pergolas & Lean-tos
16mm
Structural: Excellent
Insulation: Maximum
Cost: Premium
Max Span: 4+ m
Best For: Large Roofing
25mm
Structural: Maximum
Insulation: Maximum
Cost: Very Premium
Max Span: 6+ m
Best For: Heavy Duty
16mm Multiwall Polycarbonate Specifications
Material: Co-extruded polycarbonate with UV protection layer
Fire Rating: Class 1 surface spread of flame (EN 13823)
Impact Resistance: 250x stronger than glass
Light Transmission: 80%+
Wall Structure: Triplewall (3 internal walls) with deep hollow chambers
Available Colours: Clear (transparent), Opal (translucent white/cream), Bronze (tinted, reduces glare)
Thermal Insulation: Superior insulation; reduces heat loss vs. 10mm by up to 30%
Durability: 10-15 years with normal maintenance and UV protection
Maximum Unsupported Span: 4+ meters (depending on load requirements)
Installation: Easy to cut and install with standard tools (stanley knife, jigsaw)
When to Choose 16mm Multiwall Polycarbonate
Choose 16mm for large roofing projects where structural strength and thermal insulation are critical:
• Large unsupported roof spans (4+ meters)
• Applications with heavy snow or wind load exposure
• Commercial or industrial glazing systems
• Greenhouses requiring year-round temperature control
• Climate-critical applications where energy efficiency matters
• Premium architectural installations requiring durability
Compare with other thicknesses: Our 10mm multiwall polycarbonate is ideal for standard pergolas and lean-tos. For smaller glazing areas and side entrances, see our 6mm thickness. For industrial heavy-duty applications, see our 25mm thickness.
Frequently Asked Questions
What maximum span can 16mm multiwall polycarbonate support?
16mm can support unsupported spans of 4+ meters, depending on specific load requirements (wind, snow, etc.). This makes it ideal for large roofing projects without intermediate support structures. For engineering specifications, contact us at 01 8010022.
Is 16mm multiwall polycarbonate better than 10mm for greenhouses?
For year-round or climate-critical greenhouses, yes. 16mm offers superior thermal insulation vs. 10mm, maintaining warmer temperatures in winter and cooler temperatures in summer. This translates to energy savings and better growing conditions for heat-sensitive plants.
What colours are available for 16mm multiwall polycarbonate?
16mm multiwall polycarbonate is available in three colours: Clear (transparent, maximum light transmission), Opal (translucent white/cream, diffuses light & provides privacy), and Bronze (tinted finish that reduces glare, ideal for car ports and patios).
Can 16mm multiwall polycarbonate be cut on-site?
Yes. 16mm sheets are easy to cut with a stanley knife or jigsaw. Standard tools only—no specialized equipment needed. We recommend pre-cutting for larger custom sizes to minimize waste and ensure accurate fits.
How long do 16mm multiwall polycarbonate sheets last?
With proper installation and basic maintenance (annual cleaning and seal inspection), 16mm multiwall polycarbonate lasts 10-15 years. The UV-protection layer maintains clarity and structural integrity throughout its lifespan.
When should I choose 16mm over 10mm?
Choose 16mm when you need larger unsupported spans (4+ meters), superior thermal insulation for climate control, higher structural strength for exposed locations, or a premium finish for architectural applications. For standard pergolas and lean-tos, 10mm is usually adequate and more economical.
Product Guides & Resources
16mm multiwall polycarbonate is engineered for demanding applications where high impact resistance, structural strength, and thermal performance are non-negotiable. These unique qualities, combined with extended UV protection and deep hollow-chamber insulation, make 16mm the ideal choice for large roofing projects, commercial installations, and climate-critical applications.
Our full range of multiwall polycarbonate sheets includes 6mm, 10mm, 16mm, and 25mm thicknesses. For more information and installation guidance, visit our How To Multiwall Roofing Guide.