50mm Grey EPS for External Wall Insulation (Graphite Expanded Polystyrene) is an insulating material with about 20-25% better thermal insulation properties than basic white EPS that can effectively reduce heating costs and improve the appearance of the building.

Complete external wall insulation made of grey polystyrene is durable and maintains its functional properties throughout the entire life of the building.

External insulation systems based on grey polystyrene for building facades are a proven solution that has been used in construction for over 50 years.

The difference between white and grey polystyrene is the presence of graphite, which is added to the expanded polystyrene during the production process. 

As a result, you get polystyrene with a grey tint, but more importantly - also with increased thermal insulation properties. 

It allows the use of a thinner layer of insulation without compromising the insulation parameters of the wall.

Grey EPS is mainly intended for investors who want to achieve the standard of an energy-saving or passive house. 

The technical conditions regarding the maximum heat transfer coefficient through external walls mean that investors are forced to insulate their houses with thicker and thicker layers of insulation. 

In this situation, graphite polystyrene for external wall insulation comes in handy.

Overall it is cost effective as better insulation material means lower heating bills.

Thermal conductivity: 0.031 W/mK - improved over basic white polystyrene boards.

Specification:

Thickness: 50mm

Width: 500mm

Length: 1000mm

Pack coverage: 6.00m2

Density: 15kg/m3

Thermal Conductivity: 0.031W/mK

R-Value: 1.52m2K/W

Water vapour resistivity: 20MN.s/g.m

Compressive Strength: >70 kPa

Fire Rating (Reaction to Fire): E

Applications:

 · Balcony loggias.

 · Sandwich walls.

 · External wall insulation systems.

 · Framed wall surfaces.

 · Solid brick and block walls.

 · Continuous outer layers of frame walls.

 · Cavity block and brick walls.

 · Cavity dense block walls.

 · Thin coat rendering.

 · Gaps in closed or ventilated three-layer walls.

 · Insulated render systems.

 · Walls made using the "light wet" or "light dry" method.

 · ETICS - External thermal insulation composite systems.

Key points:

 · Cost efficient.

 · High resistance to mold growth.

 · An environment friendly Green Way product.

 · Easy to cut with a sharp knife to any size and shape.

 · Reduction of thermal energy consumption thanks to very good thermal insulation.

 · Reduction of thermal bridges thanks to the continuity of insulation.

 · Protection of external walls by limiting the influence of external factors.

 · Highly durable and aesthetic façade insulation.

 · Suitable for new build and renovation of damaged facades, also historic buildings.

 · Light weight, which is important for substrates with insufficient bearing capacity.

Preparations for the installation of graphite polystyrene:

Graphite polystyrene has the same adhesive properties as white polystyrene and there is no obligation to sand it before sticking. 

However, wiping the polystyrene surface before sticking (regardless of its color) improves the adhesion of the adhesive to the fixing. 

The surface grinding operation must be performed on the upper side, before embedding the mesh.

What glue for graphite polystyrene?

Some manufacturers recommend gluing graphite polystyrene boards using a universal adhesive intended for embedding the mesh and for fixing polystyrene, not only polystyrene adhesive.

We recommend Ceresit ZU Insulation Adhesive, Ceresit CT87 White Flexible Adhesive or Ceresit CT84 Express PU Foam Adhesive.

Experience shows that if we buy a really good polystyrene adhesive, it will work.

It is worth recalling that each polystyrene should be glued with the circumferential-point method. 

After applying the glue, it should be on at least 40% of the board surface. 

Dot and dab method should not be used anymore, but still many contractors stick polystyrene only to "dabs", insisting that they have been doing it for years and it is fine. 

This error can cause the boards to fall off, especially those made of graphite polystyrene.

Transport and storage:

Graphite façade polystyrene boards absorb more sunlight than standard (white) boards. 

Therefore, they should be protected against direct sunlight, both during transport and storage. 

Failure to secure the insulation boards may cause the so-called "Melting", causing the destruction of their structure.

During construction works, the outside temperature of the air, the substrate and the built-in material must not be less than + 5 °C and not more than + 25 °C. 

During the works, the material must not be exposed to direct sunlight. 

Scaffold nets, for example, can be used as protection against the sun's rays.

Certification:

Produced to the requirements of EN-13163 Standard.

*Further information may be found in our Downloads section.

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