Intro - Solid Planning for Sustainable Building


The construction or renovation of our house is a common goal for all of us, offering the opportunity for a better, happier life. Occupants quality of life, in terms of minimum thermal dissatisfaction, should always be a prerequisite during planning.

However, when it comes to choose the construction materials, it is important to find the most appropriate, alongside the most cost-efficient solutions, to the optimal level, taking into consideration the technically and economically feasible. The prejudice that thermal insulation is an expensive investment could be put aside. Energy savings through the expected lifetime of a building can quickly compensate the investment costs.

Neopor® insulating materials offer solid, eco-efficient solutions, reducing energy demand, protecting the building's envelope, eliminating unhealthy drafts in the living areas and ensuring that thermal comfort - a top priority meaning the expressed satisfaction with the thermal environment  - can be achieved.

Besides, minimizing energy consumption for heating and cooling is the key, the first step of the sustainable strategic planning. This philosophy, under which the building envelope prevents unnecessary loss of energy, is further enhanced, if we consider the fact that buildings account for nearly 40% of the EU's final energy consumption -a percentage even higher in Greece- and 36% of its CO2 emissions.

Climate change is already happening  and this is a fact that concerns everybody. Earth's suffering constitutes an adverse effect caused mainly by energy consumption. Seeking quality of life, equals efforts to turn our high energy consumption building stock into energy efficient homes, cozy and comfortable, without compromizing the future of the next generations, thus contributing to a sustainable future. The task is not easy, but it is the logic that could prevail!

  Numerous planners, architects and builders throughout Europe rely on the quality of Neopor® . In these projects, the original from BASF proves that it has made the leap from an innovative product to an established insulation standard.

When it comes to new construction and especially to the renovation of existing buildings, Neopor® insulating materials represent a modern, environmentally aware lifestyle called " Innovation in Insulation".

Insulating materials made of Neopor® effectively stop heat ensuring protection of all critical areas. The exterior surfaces of the highly efficient "three-liter houses" and even "zero-energy houses" are already being fitted with insulating materials made of Neopor®. There could be no better recommendation than that.
Detailed information and references to such high efficient houses be found at


The Optimized Performance of the Original Grey


Neopor®, the unique material produced by BASF, is composed of  small black beads of polystyrene (EPS) containing blowing agent, which makes it expandable. Styropan, a foam manufacturer with experience that exceeds three decades, processes this material into silver grey foam blocks which are then cut to boards of different thicknesses.

The starting production date of Styropan's Neopor® insulating products is the year 2004. Ever since, they are one of the best, if not the best, selling products of the company.



With insulation materials made of Neopor®, you can rely on the original thus achieving up to 20 percent better insulating performance. This in turn, enables the use of correspondingly thinner boards.


neopor λ


The vital difference can be seen with the naked eye in the silver-grey color. In Neopor®, graphite is added to the material, absorbing and reflecting heat radiation. The built-in infrared absorbers and reflectors largely prevent the heat dissipation caused by radiation, resulting in Neopor's oustanding performance.
    More specifically, with regard to thermal conductivity, the results that can be achieved with  Neopor® are shown in the graph on the left.

It becomes obvious that for the same bulk density [eg. 15kg/m3]  Neopor® achieves a lower thermal conductivity value [≤ 0,032 W/(m.K)] compared to normal EPS [≥ 0,037 W/(m.K)], or in another perspective, that with Neopor® the same value of thermal conductivity may be achieved at lower bulk densities.


As shown above, the heat permeability of the material is lower than with conventional insulation boards. But another major advantage of  Neopor® insulating boards lies in the reduced use of material up to 50 percent, generating savings in terms of costs and resources, which in turn reduces environmental impact. Consequently Neopor® also constitutes an eco-efficient insulating solution for up-to-date thermal insulation.


Additionally insulation materials made of Neopor® provide all of the normal EPS significant advantages: 


•   Water - repellant  •   Open to diffusion
•   Firm and dimensionally stable  •   Resistant to aging and decay
•   Easier handling through weight advantage  •   Dust-free and fast laying
•   Cost-effective  •   No skin irritant effects


If Quality is your Benchmark,  
   with insulation materials made of Neopor® you can rely on the Original


Versatile Applications offering Diverse Building Solutions


Thermal insulation is the key element of the walls, floors and roofs in low energy design. The foam panels made of Neopor® can be used in any construction applications where the normal white eps has already been used for many decades. The heat flows are minimized, mould problems are prevented while at the same time energy and consequently money, is being saved. Building design is nowadays subject to great changes. The old building stock, having huge heating and cooling requirements, needs to be refurbished. The versatile Neopor® may also offer reliable solutions to this direction as well. Under a holistic planning and careful installation, results could be optimal. The most common applications of the original grey are briefly presented below:



   Exterior Insulation (ETICS)


External Thermal Insulation Composite systems are the technology to insulate external walls with the lowest initial costs for new constructions and retrofits. Thermal bridges are easier to be eliminated, facades look aesthetically better and thermal mass - a huge parameter for energy-efficient buildings - is fully exploited. Neopor® foam panels being light, stable, with one of the best tensile strength and optimal thermal conductivity, prevent high temperature differences in the load bearing walls, relieving this way, thermal stress and associated risk of facade cracks. Shading the facades with suitable scaffolding nets are a must in this area of application.


 Cavity Wall Insulation  


This application used to be, just until recently, the most common one in Greece. The Neopor® foam panels are fitted between the two load bearing shells, easily and quickly. Thanks to its superior thermal performance Neopor® offers thinner wall construction solutions.


   Interior Insulation


Exterior insulation is usually the preferable choice for walls. Sometimes though, for example in historical buildings,  it is not possible to install the insulation layer on the outside, as the existing facade has to be preserved. In these cases Neopor® panels are installed on the inside part of the wall and covered with gypsum plaster boards or with base and finishing coats. Thermal bridges are inevitable and an hygrothermal study may be needed. Nevertheless, spaces which are used ocasionnally or briefly, having  to be quickly heated or cooled, can benefit from interior insulation.


 Flat Roofs Insulation  


Neopor® panels can be used to insulate flat roofs thus protect the building structure from temperature differentials and resulting strains. Being extremely firm and dimensionally stable they provide a long-lasting secure option. Still, in case of expected additional loads in the roof slab , products of  high compressive strength should be favored .


  Pitched Roofs Insulation


The insulation panels made of Neopor® can be used in this area of application over rafter (roof shell system) forming a full surface thermal insulation layer, free of thermal bridges, in combination with a vapor airtight barrier underneath it. This can be a favored choice for inhabited buildings (retrofits) but careful planning and execution of the edge details is required. The Neopor® panels can also be wedged between the rafters recieving longitudinal slits for enhanced flexibility and elasticity.


Attic Insulation  


Neopor® panels can very easily be installed, facing the pitched roof' s unheated space above, thus thermally separating the attic from the heated part of the building. The panels must be carefully butt-joined, so that cold air does not flow underneath them. If the attic is open to foot traffic, a protective covering layer is recommended.  



neopor 5cm,Θεσσαλονίκη
Neopor® EPS graphite products are classified in the following types:

    → Neopor® EPS 80, which is produced at a compressive strength (at 10% deformation) exceeding 80 kPa, recieving a "I" or an "L" shaped edge, depending on the construction requirements.
In order to be used in an ETICS, the Neopor® blocks are, prior to be cut into boards, stored for at least 28 days. The custom dimensions of the panels under this application are 1,00 x 0,50 m.

    → Neopor® EPS 100, which is produced at a compressive strength (at 10% deformation) exceeding 100 kPa, recieving a "I" or an "L" shaped edge, depending on the construction requirements.
In order to be used in an ETICS, the Neopor® blocks are, prior to be cut into boards, stored for at least 28 days. The custom dimensions of the panels under this application are 1,00 x 0,50 m.



Panels per package

Surface per package


100 x 50
100 x 100
100 x 200

250 x 60 100 x 50 100 x 200 100 x 100 250 x 60









25 - 12,5 50 25 -


17 14 8,5 34 17 21


12 10 6 24 12 15


10 8 5 20 10 12


8 7 4 16 8 10,5


7 6 3,5 14 7 9


6 5 3 12 6 7,5


5 4 2,5 10 5 6


    As far as outdoor storage is concerned the Neopor®  EPS graphite insulation boards - like any other construction material - should not be stored in direct sunlight any longer than necessary. If packages of boards are stored in the sun for a longer period, however, it is recommended that the top insulation board, which has been exposed to the sun, be placed aside, and the next board used first.
Styropan packages the insulation boards made of Neopor® in opaque, non transparent film thus there is no magnifying glass effect.

    In case Neopor®  panels are planned to be used for thermal insulation of the concrete wall areas (on the inside part of the formwork prior to pouring the concrete),they recieve a honeycomb surface in order for the bond strength with the concrete elements to be enhanced. Nevertheless, such an application involves the risk of residual "nest" areas, that equals major thermal bridges and/or potential construction damages.
Instead a preparation in terms of planning (post-fitting) could be a more favourable choice of application. Mechanically fixed systems with supplementary adhesive are clearly recommended. 

neopor Θεσσαλονίκη


Technical Data


Neopor® EPS graphite insulation products are manufactured in accordance with EN 13172, corresponding to the technical specification of  EN 13163 and quality controlled by Guteschutzgemeinschaft Hartsschaum e.V. (GSH). Since the European Construction Product Regulation (CPR)  has already come into force since July 2013, replacing the Construction Product Directive (CPD), the Declarations of Performance (DoP) are available upon request. Additionnally,the changes specified in the new realeased version of EN 13163 have already been merged in the following designation codes illustrated.


•    Neopor® EPS graphite  CE-marking



Factory made EPS products

CE Designation Codes

Neopor® EPS 80

EPS-EN 13163-T(1)-L(2)-W(2)-S(2)-P(5)-DS(N)2-BS125-CS(10)80-TR100

Neopor® EPS 100

 EPS-EN 13163-T(1)-L(2)-W(2)-S(2)-P(5)-DS(N)2-BS150-CS(10)100-TR100


•    Key Data of  Neopor® EPS graphite insulation products

Properties Unit Key
EN 13163

 Neopor® Products


EPS 80

EPS 100

Thermal Conductivity (10oC)

Declared value

W/(m.K) λD 0,032 0,032 ΕΝ 13163
ΕΝ 12667

Dimensional stability under specified temperature
and humidity conditions
(23οC, 50% RH)

% DS(N)2 +0,2 +0,2 EN 1603

Compressive stress at 10% deformation

kPa CS(10) > 80 > 100 EN 826

Bending strength

kPa BS > 125 > 150 EN 12089

Tensile strength perpendicular to faces

kPa TR > 100 > 100 EN 1607

Shear strength

N/mm2 ftk > 0,02 > 0,02 EN 12090

Shear modulus

N/mm2 Gm > 1,0 > 1,0 EN 12090

Long-term water absorption by partial immersion

kg/m2 Wlp < 0,5 < 0,5 EN 12087

Water vapour diffusion resistance factor
(tabulated value)

- μ 20-40 30-70 ΕΝ 12086

Reaction to fire

Euroclass - E E EN 13501-1


→   This specification covers the requirements for an EPS product applied in an ETICS, according to EN 13499 and ETAG 004


Neopor® products are insensitive to water, the majority of acids and alkalis but sensitive to organic solvents. No harmful effects on health known.