TERMONIUM fundament (foundations)

  • thermal insulation of walls buried in the ground,
  • thermal insulation of basement walls and foundations,
  • insulation of very damp areas where the insulating material must be resistant to water.

The product complies with the harmonized standard EN 13163:2012.

TERMONIUM fundament EPS 150    EPS-EN 13163-T(2)-L(3)-W(3)-Sb(5)-P(5)-BS200-CS(10)150-DS(N)2 -DS(70,-)2 -DLT(1)5-WL(T)3

Those are white and orange foamed polystyrene boards produced from specially selected raw material containing orange protective filter. TERMONIUM fundament boards have the parameters meeting the requirements of modern thermal insulation used in extreme conditions in which the product is in direct contact with water and for a long period of time exposed to a temperature change. The boards can have a direct contact with the ground and they do not require additional protection. The boards may be produced with flat or milled edges enabling proper fitting. The boards are manufactured in standard dimensions: 1000 mm long, 500 mm wide, 10 mm thick, and then every 10 mm. A compressive creep deformation of 2% or less, when subjected to a permanent compressive stress of 45 kPa (4500 kG/m2).

Polystyrene subjected to voluntary certification and recommendation procedure at Building Research Institute (Polish: ITB), not resulting from the system of assessment and verification of performance constancy.

Declared properties of TERMONIUM fundament expanded polystyrene boards:

Dimension tolerance classes:  
  • thickness
  • T(2)± 2 mm
  • length
  • L(3)± 0,6% or ± 3 mm*)
  • width
  • W(3)± 0,6% or ± 3 mm*)
  • rectangularity
  • Sb(5)± 5 mm/m
  • flatness
  • P(5) 5 mm
    Bending strength levelBS200≥ 200 kPa
    Compressive stress at 10% relative deformationCS(10)150≥ 150 kPa
    Class of dimensional stability under constant normal laboratory conditionsDS(N)2± 0,2%
    Level of dimensional stability under specified temperature and humidity conditions (temp. 70°C, 48 h)DS(70,-)2 2%
    Deformation under specified compressive load and temperatureDLT(1)5≤ 5%
    Water absorption at long-term total immersionWL(T)3≤ 3%
    Declared thermal conductivity ratio λD at a temperature of 10°C0,035 W/(m*K)
    Fire reaction classE

    *)Value which offers higher tolerance.

    Declared value of thermal resistance RD depending on the thickness of TERMONIUM fundament boards

    Thickness, mm102030405060708090100
    RD, m2K/W0,250,550,851,101,401,702,002,252,552,85
    Thickness, mm110120130140150160170180190200
    RD, m2K/W3,103,403,704,004,254,554,855,105,405,70


    The EPS foam boards should be used according to the manufacturer’s instructions, RTQ ITB 1261/2013 Technical and Quality Recommendations, and guidelines included in a construction design. After having been fixed to external walls, the EPS boards above the ground level should be immediately covered with an outer layer (reinforcing layer and plaster) and with a waterproofing layer (PE film or damp-proof coarse). EPS boards under the ground level should be covered with ground with the aim of protecting them against the direct influence of weather conditions (UV radiation), which have a destructive effect on EPS surface. In case of long-term exposure to atmospheric factors, the surface of boards can be covered with yellowish, thin covering. Therefore, before the reinforcing layer is applied by ETICS method, remove the covering with fine sandpaper until there are no loose particles on the surface which could weaken the adhesion to the polystyrene.
    To fix TERMONIUM fundament boards, use the polyurethane adhesive TO-KPS (together with mechanical fasteners except for the layers under the ground level) or TO-KS adhesive (only for boards above the ground level). To make the reinforcing layer, use the TO-KU universal, TO-KUB white adhesive and TO-S145 or SP-S170 meshes (adhesive and meshes only for boards above the ground). It is recommended to protect the boards by damp-proof coarse or similar acceptable for the contact with EPS under the ground level.


    Do not use the EPS boards in direct contact with the substances having destructive effect on polystyrene EPS, such as organic solvents (acetone, benzene, nitro), etc.

     Package, storage, transportation

    TERMONIUM fundament boards are supplied only in the original manufacturer's packaging. The label on a package contains the following information: the name of a product, the manufacturer's name and a factory name, the date of production, EN 13163:2012 standard number, a code compatible with that standard, and declared technical features. TERMONIUM fundament boards should be protected against damaging and weather conditions.

    Technical sheet TERMONIUM fundament (foundations) (54.5KB)pdf  download
    Certyficate of conformity ITB-851W(1.38MB)pdf  download
    Declaration of Preformance TERMONIUM fundament (foundation) 013-DoP-151222(2.32MB)pdf  download
    Certification Mark(0.55MB)pdf  download


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    Polyurethane Adhesive for EPS TO-KPS
    Decorative (mosaic) Plaster TO-TD