Pearly GRECA Series Pearly GRECA Series
Pearly GRECA Series
VULCAN Pearly GRECA Polycarbonate filters unwanted, solar heat radiation. GRECA Polycarbonate Pearly sheets transmits cool, diffused green light.

Diffused and Cool - Solar selective wavelength penetration.

Soft Diffused Lighting - Filters unwanted wavelengths, retaining cool, diffused GREEN light.

Controlled FIR and NIR - Reduce temperatures by max. 10°C or 50°F.

Weathering Resistant - Clariant UV and Light Stabilizers for extra durability and longevity.

Extra light diffusion + High Haze + Balanced light.

Aesthetically pleasing - Owing to high mother of pearls content.

VULCAN GRECA Polycarbonate profile (76/18)

Our GRECA polycarbonate sheet has the widest span, at 1170mm with 16 corrugations, among all VUCAN corrugated profiles, with a maximum effective covering width of 1100mm.

The trapezoid shape and structure of GRECA truly matches the GRECA metal profile commonly seen in the Americas among other countries, while also providing great structural rigidity and aesthetics, which is commonly used as patio skylights, walkway coverage among other building projects.

VULCAN GRECA polycarbonate corrugated profile has the same pitch and depth as our ROMA profile, which makes them interchangeable on the same building structure, providing additional choice and a change of taste possible at minimum cost.

Recommend reading: Polycarbonate Roofing Profiles | Introduction to VULCAN Profiles

Basic product specifications of Vulcan GRECA polycarbonate profile

Introducing PEARLY GREEN

VULCAN Pearly GREEN has been designed as a solar heat protection application that attenuates longer wavelength heat-producing infrared radiation very effectively through reflection, but at the same time, allowing a high percentage of cool, diffused GREEN light to pass through.

Pearly GREEN have particle sizes in the range of 10~60μm, and is suitable for general-purpose infrared blocking applications.

Pearly GREEN reflects rather than absorbs heat producing far-red solar radiation without affecting the transmittance of the GREENspectrum, and retains cool, diffused GREEN light.

This makes it easier to control the climate, particularly in the summer, and maintain optimum room temperature.*
*A large proportion of the heat inducing far-red light is reflected.

Product Strengths

Pearly Material

Designed as a solar heat protection application that attenuates longer wavelength heat-producing infrared radiation very effectively through reflection, but at the same time, retains cool, diffused GREEN light.

Pearly Technology

With particle sizes ranging from 10~60μm, Pearly is suitable for general-purpose infrared blocking applications.

Light Transmission Rate

Controlled VIS (380~780nm) - 40% Visible Light Transmission Rate

Excellent shading Properties

Perfect for living organisms.

Heat Reflective Properties

Controlled FIR (Far-Infrared) and NIR (Near Infrared) spectrum. Capable of reducing temperatures up to 10°c*.*Certain conditions may apply.

Base Material

VULCAN polycarbonate sheets use only 100% Virgin Covestro UV stabilizer included master-batch.

UV Protective Coating

Co-extruded with the Base Material, the Clariant CESA Light UV and Light Stabilizers blocks harmful UV rays from 280~400nm. With co-extruded UV protection, VULCAN Polycarbonate sheets are able to last 10 years or more.

Clean Room Manufacturing

VULCAN Sheets are produced in ISO Class 7 (FED STD 209E equivalent Class 10,000) clean rooms to ensure an impeccable quality.

Production Method

Co-Extrusion ensures evenly spread, evenly thick base material and UV coating.

VULCAN Pearly GRECA Polycarbonate Material Grade & Colors

Product Grade Polycarbonate UV co-extruded sheets with Pearly coating
Outlook Outlook of Vulcan GRECA Polycarbonate Pearly-Red Outlook of Vulcan GRECA Polycarbonate Pearly-Green
Color Pearly Red Pearly Green
Raw Material 100% Virgin Covestro Polycarbonate Resin
Performance Coating Pearly PAR selective coating
Warranty 10 year warranty: 5 for yellowing, and 10 year for usage under normal conditions.
*Please refer to the installation instructions and list of harmful chemicals. Failure to comply shall void warranty.
Light Transmission Rate 73% 65%
UV Protection Clariant CESA-Light UV and Light Stabilizers block 99% of harmful UV rays. Double layered, Co-Extruded coating process ensures a longer lifespan compared with other product brands.
Properties Pearly Series sheets reflects NIR while letting most of the visible light through, which serves as the perfect material for greenhouse plants in tropical and subtropical countries.
Places to Use Housing, Interiors, places with living organisms.


VULCAN Pearly GRECA Polycarbonate Material Properties

Material Grades Pearly Series
Color Pearl Lilac
UV CESA-Light Co-Extruded
Included in Base Material
Warranty 5yrs (Yellowing)
10yrs (Usage)
Lighting Direct    
Shading Excellent  
IR Control Excellent
PAR Control Excellent


VULCAN Pearly GRECA Polycarbonate Sheet Properties

Material Typical Properties Test Method Results Remark
Tested on 1.5mm Pearly Sheets
Tensile Strength @yield (kgf/cm²) CNS 11335 667 Should exceed 551 (kgf/cm²)
Tensile Elongation (%) CNS 11335 47 Mean Value of 3 Specimen
Impact Strength CNS 12093 No Rupture Mean Value of 3 Specimen
Change Percentage of Yellow Index (YID) after Weathering Resistance test (1200hrs)

ASTM G154 


ΔYI -0.49 Measured Wavelength
Visibile Light Transmittance (%) ASTM D1003 30  
Ultraviolet Transmittance (%) ASTM D1003 0.9  
Density (ρ) ASTM D792 1.19 g/cm³  
Burn Characteristics CNS 12093 Burnt portion self extinguishes after burner is removed. 10 Specimen Tested. Does Not Reach 25mm Reference Mark.
Heat Reflective Properties
JIS R3106 Blocked NIR Solar Heat Gain Coefficient
Properties VULCAN Pearly sheets are co-extruded with a PAR selective additive that blocks heat inducing solar radiation, while allowing high a percentage of cool, diffused green light penetration.
Places to Use Housing, warehouse or industrial skylights, walkways, patios; basically places with living organisms.