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An advanced multiwall polycarbonate panel system that combines proven design, light transmission, thermal insulation and strength.

It offers a lightweight, leak-proof design that withstands very high loads and accommodates expansion and contraction. The systems' distinct advantages make it ideal for long-term application on many types of projects. As with any true architectural glazing system it is appropriate for a variety of roofing and cladding designs, flat or curved.

A self-fastening system, based on multiwall panels, and is available in a range of thicknesses. The panels join together by polycarbonate or aluminium joiners, which are sealed at the ends by end-caps. T-Fasteners fix the entire system to the structure, allowing the panels to be clamped in place, without any point fastener penetration through the panels. Ventilated sealing tape seals the panel lower end, to prevent dirt from entering the flutes, while also providing sufficient drainage.

U-profiles (polycarbonate or aluminium) or F-profiles (aluminium) seal the upper ends of the panels. Aluminium F-profiles finish off side edges of the plane, creating a fully framed installation.


  • Withstands very high loads.
  • Accommodates expansion and contraction.
  • Simple and fast installation.
  • Leak-proof.
  • High thermal insulation.
  • Ideal for curved designs.
  • Double sided UV protection.
  • SolarSmart™ cool light colours.


  • Architectural roofing and glazing.
  • Commercial and retail roofing.
  • Sport facilities - translucent roofing.
  • Covered walkways, awnings and entrances.
  • Open markets - light roofing.
  • Service stations - translucent roofing.
  • Parking structure covering.
  • Swimming pool covers.

The system is primarily defined by the panel thickness. All other components are selected to match this panel.

Standard product features

Technical properties:

  • Density: 1.2 g/ cm³.
  • Elongation at break (10 mm/min): >80%.
  • Fire resistance (to BS EN 13501): B, s1, d0.
  • Service temperature: -50 to +100°C.
  • Tensile strength at yield (10 mm/min): 62 MPa.


Colour/ Finish:

Various options available, consult technical literature for details of light transmission, solar heat gain coefficient and shading coefficient.

- SolarSmart™ - Energy efficiency:

SolarSmart™ energy-efficient tints break the traditional ratio between light transmission and shading coefficient. By blocking Infrared energy that causes heat build-up, they transmit 'cool light' and reduce air-conditioning and lighting costs.

- DiffuserPlus™ - Double diffusion effect:

DiffuserPlus™ offers double diffusion which prevents both transmitted and reflected light from excessive glare.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
20-50-60/160 Self supporting plastics profiled sheet roofing system

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Palram Europe Ltd


+44 (0)1302 360161

Product reference

[SUNPAL® 8/600]
Thickness: 8 mm, size (w x h): 600 x 23.5 mm. U-value: 2.45 W/m²K.
[SUNPAL® 8/600 Lite]
Thickness: 8 mm, size (w x h): 600 x 23.5 mm. U-value: 2.45 W/m²K.
[SUNPAL® 10/600]
Thickness: 10 mm, size (w x h): 600 x 25.5 mm. U-value: 2.10 W/m²K.
[SUNPAL® 18/1000]
Thickness: 18 mm, size (w x h): 1000 x 33.5 mm. U-value: 1.50 W/m²K.
[SUNPAL® 20/1000]
Thickness: 20 mm, size (w x h): 1000 x 35.5 mm. U-value: 1.50 W/m²K.

Colour/ Finish

[Blue DiffuserPlus™]
[Bluish breeze SolarSmart™]
[Bronze DiffuserPlus™]
[Clear DiffuserPlus™]
[Green DiffuserPlus™]
[Red DiffuserPlus™]
[Solar control SolarSmart™]
[Solar grey SolarSmart™]
[Solar grey Diffuser Plus™]
[Solar ice SolarSmart™]
[Solar ice DiffuserPlus™]
[White ice]
[White opal]
[White opal DiffuserPlus™]

Manufacturer details

Unit 2,
Doncaster Carr Industrial Estate,
White Rose Way,
South Yorkshire, DN4 5JH
Tel +44 (0)1302 360161
NBS Plus