Foundation molds

FINNFOAM foundation molds are made from F-400 strength class FINNFOAM (XPS) insulation material. Due to its fully consistent and closed cell structure, FINNFOAM is a durable, waterproof thermal insulation product, and its high compressive strength makes it the perfect insulation material for use under foundations. FINNFOAM is excellently suited for use as frost insulation and for insulating base floors, walls, and ceilings. It is also perfect for various supplementary thermal insulation applications.

Material: Extruded polystyrene
Color: Light yellow


Panel Lenght Width Thickness
Finnfoam Foundation molds 200 mm 2500 mm 600 mm
Finnfoam Foundation molds 580 mm 2500 mm 460 mm


One package provides 5 m of ready-made foundation molds.

F-400 Foundation molds

  • Dimensions
  • Technical details
Value Unit According to EN 13164 Standard
Length 2500 mm
Thickness 50, 60, 70 mm
Value Unit According to EN 13164 Standard
Thermal conductivity EN 12667
λ Declared 0,035 [W/(m K)]
λu, frost insulation 0,037 [W/(m K)]
Compressive strength, short-term 45 days, ≥ 30mm 300 kPa CS(10/Y300 EN 826
Compressive creep over 50 years 180 kPa CC(3,0/2,0/50)180 EN 1606
Design stability < 5 % DS(70,90) EN 1604
Water absorption when fully immersed in the long-term ≤ 0,7 t% WL(T)0,7 EN 12087
Freeze-thaw-resistance ≤ 1 t% FTCD1 EN 12091
Absorption of water by diffusion ≤ 2 t% WD(V)2 EN 12088
Water vapor permeability 150 μ MU150 EN ISO 10456
Capillarity 0
Fire class NPD
Thermal expansion 0,07 [mm/(m K)]
Service temperature - 150... + 75 EN 14706
Indoor air emission class M1