Product Description

ALSYNITE EVERLITE R74 is a high quality general purpose FRP that has been the cornerstone of Alsynite's fibreglass business for many years. Both the exposed and the underside surfaces are protected by a surface coating films produced by world renowned film makers.


This proven system is backed by a 10 years performance warranty. Available is a wide range of profiles, ALSYNITE EVERLITE R74 is the sensible choice for cost effective skylight and wall applications.

Key Features

  • Excellent long term weathering characteristics
  • 10 Years warranty *conditions apply
  • Non delaminating surface technology
  • Outstanding surface erosion resistance
  • Superior long term clarity properties

Typical Applications

  • Industrial and commercial skylights
  • Building skylight sidings
  • Nursery & retail areas
  • Car porch & pergola covers
  • Light diffusers

Product Specifications

Profiles Due to Alsynite’s global presence, we have an extensive range of profiles within our portfolio that matches most metal sheeting profiles.
Sheet Length Standard sheet lengths up to 11.9 meters. Other non-standard lengths are available subject to special order and shipping parameters.
  • 1800 gsm
  • 2400 gsm
  • 3050 gsm
  • 4880 gsm 
The standard weight for industrial applications is 2400 gsm. For sheet weights not listed, please contact your nearest Alsynite distributor for further details.
Nominal Thickness 1.2mm, 1.5mm, 2.0mm   ± 15%
Surface Coating World renowned improved UV protection film. 20 micron nominal thickness.

Standard colors of Clear and Opal.

Customized colors are available, subject to minimum order quantities and pigment availability.

The combination of color and weight will affect the amount of light transmitted through the sheet.

Resin System Advanced general purpose grade orthophthalic polyester.
Reinforcement “E” Class Fibre optic glass, at least 22%
Light Transmission Clear 74%, Opal 58%  (Using 2400 gsm 1.5mm sheet)
Thermal Conductivity Clear 72%, Opal 62%  (Using 2400 gsm 1.5mm sheet)
Heat Distortion Temperature + 180 to 200
Thermal Expansion 2.5 x 10-5 cm/cm/°C
UV Resistance Clear 99.9%, Opal 100%

Mechanical Properties

Properties Flexural Strength Tensile Strength Shear Strength
Test Value 177MPa 94MPa 90MPa
Properties Specific Gravity Compressive Strength Barcol Hardness
Test Value 1.41g/cm3 135MPa > 50


Physical Properties

Properties Specific Gravity
Thermal Expansion
(10-5 cm/cm/°C)
Water Absorption(%)
Test Value 1.41 2.2 0.52 to 0.60
Properties Thermal Conductivity
Heat Distortion Temperature (°C) Operating Temperatures (°C)
Test Value 0.158 +180 to 200 -20 to +95


Solar Optical Properties

Properties Solar Transmittance Luminous Transmittance Diffused Light Transmission (%)
Clear 0.68 0.67 74
Opal 0.58 0.53 55
Properties Shading Coefficient U-Value (W/m2K) Solar Heat Gain (W/m2)
Clear 0.82 5.7 560
Opal 0.71 5.7 486
Properties Solar Heat Gain Coefficient Transmittance 380-320nm (UV – A) Transmittance 320-280nm (UV – B)
Clear 0.72 0.04 0.006
Opal 0.62 - -


Results of tests are based on a 2400 gsm sheet.