In General Insulation materials quality is evaluated depends on the Physical andMechanical properties of the material , STYRO EPS is the only unique material meeting and exceeding all the requirement of Insulation properties such as Thermal conductivity ( Lambda value (λ) or K value ), Long term Thermal resistance value (R value ), Compressive strength, Water absorption, Fire-properties , Flexural strength, Dimensional stability etc.

Yes, Prolonged exposure to direct sunlight will cause slight discoloration and forms yellowish skin on top of STYRO EPS insulation, this occurs due to UV rays effects on sunlight which is named as ULTRAVIOLET DEGRADATION. STYRO EPS should be protected with a light-colored opaque LDPE film or Tarpaulin sheets in case if it is stored under direct sun light.

YES, Petroleum-based solvents or its vapors can harm STYRO EPS, care should be taken to protect STYRO EPS from those solvents or their vapors. (pls. refer  Do’s & Don’t page for more details)

Permeability is the water vapor transmission of a homogeneous material under unit vapor pressure difference between two specific surfaces, per unit thickness. Permeability is important for specifying insulation materials.  Permeance is the water vapor transmission of a specific sample under unit vapor pressure difference between two specific surfaces.

The amount of water vapor passing through a given area of a plastic sheet or film in a given time, when the sheet or film is maintained at a constant temperature and when its faces are exposed to certain different relative humidity. The result is usually expressed as grams per 24 hours per square meter.

Perm inch is a traditional unit of water vapor Permeance. The perm value (see above) does not depend on the thickness of the material used as a water barrier. The permeance is the product of the perm value and the thickness, measured in inches.

Perm is a traditional unit of water vapor permeability, that is, the ability of a material to permit the passage of water vapor. If we want to keep things dry, we wrap them in something having low permeability. A material has a permeability of one perm if it allows transmission of one grain of water vapor per square foot of area per inch of mercury (in Hg) of pressure difference per hour.

Yes, EPS has long term “R” VALUE. Thermal Resistance (R-value) of EPS doesn’t deteriorate due to age since each cell of EPS comprises of NATURAL AIR not having any injected GAS. As a result, the thermal resistance stays consistently constant throughout the age of the material (R-value)

R-Value (Thermal resistance) indicates the insulating power of an insulation material. The higher the R-value, the greater the insulating power i.e. more energy savings. The thermal resistance (R value) of a specific product can be found by dividing its thickness by the K value.

R value : Thickness / K value = Unit  M2 k/w

YES, STYRO EPS is 100 % recyclable. After its successful accomplishment of original intended life, EPS could be recycled into a variety of consumer products. Many EPS converters have been reprocessing their own in-plant off-cuts, scrap for many years. As a part of social corporate responsibility STYRO offers post-consumer waste collection & recycling to all its valued customer.

Absolutely NO, From the day one EPS is Manufactured with Eco-friendly Pentane gas as blowing agent. EPS is 100 % CFC, HCFC or its fiber Free material. EPS does not contain any Ozone depleting chlorofluorocarbons   or Hydro chlorofluorocarbons (HCFCs). Therefore It’s Ozone Depletion Potential Zero (ODP=0).   Since it has ZERO ODP it falls under Low GWP category. (Global Warming Potential).  (Pls. refer toEnvironment page for more details)

  • EPS is a good example of the efficient use of natural resources – it is 98% air.
  • The manufacture and use of EPS does not generate any risk to health or to the environment.
  • EPS does not damage the ozone layer since it does not use CFCs or HCFCs in the manufacturing process. EPS is 100 % CFC, HCFC Free material.
  • The transformation process consumes little energy and does not generate waste.
  • The use of EPS for thermal insulation in the construction industry contributes significant savings on heating and cooling buildings and a drastic reduction in the emission of polluting gases Co2, Co3.
  • EPS packaging protects products, helping to reduce wastage and its lightweight nature helps to reduce fuel consumption.
  • Non FR grade EPS can come directly into contact with foodstuffs as it meets all the prevailing international Health regulations.
  • It is chemically Inert, Fungi and bacteria cannot easily grow on EPS.
  • EPS makes up only a tiny part of Municipal Solid Waste (0.1%).
  • EPS is 100 % Recyclable
  • As it does not biodegrade EPS does not contaminate the air or water with gases or any soluble substances.
  • Ozone Depletion Potential Zero (ODP=0)
  • Low GWP (Global Warming Potential) thus Environment Friendly

Like many other construction materials, Non flame retardant STYRO EPS is combustible. It should not be left to expose flame or other ignition sources. STYRO EPS insulation should be encapsulated with a thermal barrier or otherwise installed in accordance with applicable building code requirements. ( pls. refer fire page for more details)

Yes, EPS used in Civil and Construction industry is 100 % fire-retardant , self- extinguish , Flame proof  material . All EPS products which is used in the construction industry are complying following fire properties ;

  • Oxygen Index (OI) by 24 % of its total volume minimum.
  • Smoke development index (SDI):200 As per ASTM E84
  • Flame Spread Index (FSI) :  10 (Class A) As per ASTM E84

As per ASTM E84 standards fire properties of building material are categorized based on SMOKE DEVELOPMENT, FIRE SPREAD properties of that particular material. EPS fire properties rated as CLASS A or CLASS 1 as its fire properties complies with in the specified range of CLASS A or 1

  • EPS Smoke development index ( SDI): 200  As per ASTM E84 (450 as Max)
  • EPS Flame Spread Index (FSI) :  10  (Class A) As per ASTM E84 ( 0-25 as Max)
Flame-Spread Index Smoke Development
Class 1 or A 0 – 25 450 Maximum
Class 2 or B 26 – 75 450 Maximum
Class 3 or C 76 – 200 450 Maximum

Expanded Polystyrene (EPS) is a rigid cellular plastic foam material derived from petroleum and natural gas byproducts. The spherical beads of resin are subjected to steam, which causes the thermoplastic polystyrene to soften and expand up to 40 times its original volume. Each small bead of polystyrene is fully sealed so called 95% closed cell insulation.
EPS is produced in a wide range of densities from 8 to 50 kg/m3 providing a varying range of physical, mechanical properties. These are matched to the various applications in the construction sector such as Insulation for Roofs, Walls, Floor and Foundations, etc. Major application of EPS is as Thermal Insulation followed by Light weight void fill, Packing, Packaging and Art& Decoration.
EPS has a successful history of efficient use in industrial, commercial, cold storage and residential construction. Where energy efficiency and cost effectiveness have long been primary design considerations, architects have made EPS the dominant thermal insulation.

EPS has excellent compressive strength of 50-300 KPA which meets the requirement of all type construction applications.

Worldwide EPS (Expanded Polystyrene) also is popularly known us following generic names: STYROFOAM, STYROPOR, RIGIFOAM, FILLIN, GEOFOAM, ISOFOAM, INSOFOAM & THERMOCOLE

Polystyrene, sometimes abbreviated as “PS”, is an aromatic polymer made from the chemical styrene, a liquid hydrocarbon that is commercially manufactured from petroleum by the chemical industry. Polystyrene is a thermoplastic substance that normally exists in solid state at room temperature, but melts if heated (for molding or extrusion), and becomes solid again when cooled. Polystyrene can be recycled, and has the number “6” as its recycling symbol.

Polystyrene is one of the most widely used kinds of plastic. Pure solid polystyrene is a colorless, hard plastic with limited flexibility. It can be cast into molds with fine detail. Polystyrene can be transparent or can be made to take on various colors. Solid polystyrene is used, for example, in disposable cutlery, plastic models, CD and DVD cases, and smoke detector housings. Products made from foamed polystyrene are nearly ubiquitous, for example: packing materials, insulation, and foam drinks cups. Discarded polystyrene, which does not biodegrade, is often abundant in the outdoor environment, particularly along shores and waterways.

Polystyrene is commonly produced in three forms: extruded polystyrene, expanded polystyrene foam, and extruded polystyrene foam, each with a variety of applications.

Extruded polystyrene
Extruded polystyrene (PS) is economical, and is used for producing plastic model assembly kits, plastic cutlery, CD “jewel” cases, smoke detector housings, license plate frames, and many other objects where a fairly rigid, economical plastic is desired. Production methods include stamping and injection molding.

Polystyrene foams are good thermal insulators, and are therefore often used as building insulation materials, such as in structural insulated panel building systems.
They are also used for non-weight-bearing architectural structures (such as ornamental pillars).

Expanded polystyrene foam
Expanded polystyrene foam (EPS) is usually white and made of expanded polystyrene beads. Familiar uses include packing “peanuts” and molded packing material for cushioning fragile items inside boxes.

Extruded polystyrene foam
Extruded polystyrene foam (XPS) has air inclusions which gives it moderate flexibility, low density, and low thermal conductivity.

Yes very much, all EPS products can be painted with water based paint, however in case of Oil based paints the surface must be coated with special hard coating. Upon demand STYRO can supply special kind of hard coating material suitable for EPS. (Pls. refer Do’s and Don’ts page for more details)

Yes, STYRO EPS can be bonded together with Super Styro Stick (SSS) special glue. This special glue is Manufactured and supplied by STYRO. (Pls. refer SSS glue page for more info.)

Several tests and studies has proved that STYRO EPS insulation material installed in well-constructed roofs does not absorb appreciable moisture, even under conditions characteristic of prolonged, cold, damp winters. The small amount of moisture absorbed (an average of 0.2% by weight) has little or no effect on the compressive or flexural strength and the STYRO EPS insulation retains between 95% and 97% of its thermal efficiency.

Though STYRO EPS has low water vapor transmission, STYRO EPS is not a vapor barrier. Rather, it “Breathes” and, therefore needs no costly venting as do some other relatively impermeable insulation materials which could otherwise trap moisture within walls and roof assemblies.

Though STYRO EPS provides a high level of moisture resistance and breathability, it is recommended to laminate with Alum. Foil or Foil Scrim Kraft (FSK) or LDPE sheet or Bitumen based (Non-solvent) adhesive can be applied as a Vapor barrier coating on EPS.

According to DCL (Dubai Central Lab) regulation all EPS products Manufactured by STYRO for the construction applications are strictly complies to (ASTM: American Society for Testing and Materials / American Standard Test Method) ASTM C 578and ASTM E84 standards.
Other type of standards are also commonly followed by some consultant and contractors as described below

  • BSI – British Standards ref : BS:3837
  • DIN standard  : 52612,43420: Deutsches Institut für Normung which means ‘German Institute of Standardization
  • EPS is the light weight and excellent eco-friendly insulation material compare to the conventional materials available in the market since;
  • It is low cost material with high R value.
  • As an thermal insulation it is Low carbon foot print material
  • It Saves and conserves Energy
  • NO CFC’s and HCFCs
  • It is Green product , Meets and Excels LEED standards (Leadership in Energy and Environment Design)
  • Easily disposable &  recyclable thus less environmental impact
  • Life cycle assessment (LCA) of EPS from Manufacturers to disposal supports the environmental impact benefits of EPS for sustainable building & development.
  • Less ODP AND GWP

Yes, very much. Its high Resilience, Energy absorption properties allows the buildings to withstand shocks, tremors, jolts generated by earth quakes. During tremor, the soil adjacent to the building puts additional pressures on footing as it tries to move back and forth. EPS plays as a buffer material between the building footing and neighboring soil and protect the structures from the additional pressures. EPS deforms in a controlled manner when placed against a structure, can reduce earthquake pressures by 40-50 % percent.

EPS can be used as good impact sound insulation material due to its unique resilient property, high energy and shock absorption properties. According to the test conducted by BASF its dynamic stiffness ranges from 43-66 MN/M3 at a frequency of 74 to 91 HZ.

Major Criteria’s like dwindling  oil reserves & fossils,  Rapid growing world population, increased demand in energy per capita,  Escalation in energy cost, Greenhouse gas emission and Impact on Global warming issues had  enlighten the growing and grown  countries to save & conserve the energy  since  “Energy saving equals to Energy Producing”.

Though energy cost to the public are subsidized by the Government in certain countries (countries like GCC) it became Government’s top most priority to study the various ways & means to cut down the cost of energy.  As a results of varies studies, statistic and researches conducted by the Government authorities it has been proved that the total energy consumed by the huge Industries and Factories are negligible in comparison with energy consumed by the modern Buildings.

As several studies proven that almost all the buildings falls under most vulnerable category in energy consumption, Municipalities have taken serious initiatives and enforced the contractors or end-users to INSULATE buildings from Roof to Wall. 

During recent days building approvals among GCC countries are not entertained by the Municipalities in case if the insulation is not considered during the design stage itself.  Furthermore it became so compulsory and mandatory otherwise Utility and Energy connections cannot be obtained from the concerned authorities without having a clearance letter from insulation contractor / suppliers.  

As a progress of development on above initiative it has been decided to encapsulate the existing old buildings which are not insulated. Exterior Insulation Finishing System applicators (EIFS / ETICS) came in picture to insulate the existing old building and enhance aesthetic look of those buildings instead demolishing them.

Basically both EPS White & (Grey) EPS are typically similar kind of insulation material except in color and R value. Graypor is an evolution of white EPS & innovative insulation material.  For the particular it achieves 20 % better insulation value (K value) in compassion with white EPS.

As an application point of view it is an ideal material to use as “Wall insulation” for all kind of buildings.  Since its superior “R” value it is highly recommended for other insulation applications like;

  • Cavity wall insulation
  • Façade insulation
  • Pitched roof insulation
  • Impact Sound insulation
  • Soffit insulation.
  • ICF and many more


Advantages of Graypor:

  • Cost Effectiveness
  • Fast
  • Withstand hurricanes and earthquakes
  • Higher insulation values!
  • Chic construction site!
  • Color

Graypor (Grey EPS) in Comparison to White EPS

Styro Graypor has became the best favorite, User –friendly material for EIFS, ETICS applicators due to trailing reasons.

  • It is premium Quality German origin material.
  • Its excellent dimensional stability avoids any post cracks or shrinkage.
  • It is smooth , true level surface protects from any undulation after EIFS finishing
  • Since it is very light in weight to handle at site
  • Easy workability , No itchy or noxious
  • EPS is completely compatible with other materials used in construction including cements, plasters, salt, fresh water and so on.
  • It is versatile material, can be cut into the shape or size required by the construction project.
  • Styro Graypor is 100 % Fire retardant, it has low Fire spread and Smoke development index therefore it has been categorized under “A” class in building insulation as per ASTM E84 standards.
  • It has good resilience, shock absorption property allows to work as thermal cum acoustic insulation.
  • It is durable
  • It is not 100 % vapor barrier it allows the building to breathe
  • Very low water absorption in relation with fiber and mineral panels
  • Unlike lose fiber panels EPS is 95% closed cell insulation, it has excellent mechanical properties making it good choice for EIFS.
  • Lower thickness can achieve superior “R” values thus reduced wall thickness.
  • It is 100 %  Recyclable  , Sustainable  & Eco friendly material since it is free from CFC and HCFCs
  • EPS does not absorb moisture and its thermal and mechanical properties are unaffected by damp, humidity or moisture.

EPS can be used for both cold and heat insulation and the application temperature ranges from -110 ℃ to +110℃.

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