Sandwich panel SPA I for internal wall

Sandwich panel SPA I is available in thicknesses 100 - 150 mm.

This product, made with the use of advanced production processes, offers optimal performance of the designed solution.

With the filling consisting of non-combustible and environmentally friendly hard mineral wool, this sandwich panel ensures excellent fire resistance. Properly milled core increases air-tightness and contributes to outstanding sound insulation.


  • Internal walls

The information on our website is accurate to the best of our knowledge and understanding. Although every effort has been made to ensure accuracy, the company cannot accept any responsibility for any direct or indirect damages resulting from possible errors or incorrect application of the information of this publication. We reserve the right to make changes.

Copyright © 2019 Ruukki Construction. All Rights Reserved.

    Model name
    Sandwich panel SPA I for internal wall
    Standard module width
    1200 mm
    Minimum length
    2000 mm
    Maximum Length
    13500 mm
    External facing thickness
    0.50 mm
    Internal facing thickness
    0.50 mm

    Properties by panel thickness

    Thickness D (mm) 100 125 150
    Weight (kg/m2) 21.4 24.5 27.4
    U-value (W/m2K) 0.41 0.32 0.26
    Sound insulation Rw (dB) 29 30 30
    Reaction to fire A2-s1, d0 A2-s1, d0 A2-s1, d0
    Wall fire resistance values & max span horizontal / vertical orientation (m):
    EI 30 7.5 / 7.5 7.5 / 7.5 9.0 / 8.8
    EI 30 (stainless steel) - - 7.5 / -
    EI 60 7.5 / 7.5 7.5 / 7.5 9.0 / 8.8
    EI 60 (stainless steel) - - 7.5 / -
    EI 90 4.0 / 6.0 7.5 / 7.5 7.5 / 8.8
    EI 90 (stainless steel) - - 6.0 / -
    EI 120 - 7.5 / 7.5 7.5 / 7.5
    EI 180 - - 4.0 / -
    All properties are declared in accordance with EN 14509 and related standards.

    Changes to sandwich panel fire resistance standards (wall applications)

    Coatings and colours


    Facing Coating Corrosivity category UV resistance  Colours
    Internal Polyester C3 RR20
    Internal Foodsafe Laminate* C4 White
    Internal  Stainless steel*  C4
    *) optional material
    UV resistance describes how well the coating is able to keep its original colour and gloss levels in accordance with EN10169. The higher the class, the better the resistance.

    Corrosivity categories describe the outdoor climate conditions in accordance with EN12944. The higher the category, the more corrosive environment.

    Read more about UV-resistance and corrosivity categories.



    Design tools
    To make both architectural and structural design work easier, with accurate product information in 3D form, we offer a selection of CAD / BIM -objects and software tools, which can be downloaded from the Software Toolbox portal.

    Ready modelled BIM objects

    Download objects for ArchiCAD
    Download objects for Revit

    Software tool TrayPan for choosing the optimal panel type

    User-friendly TrayPan software takes into account load, temperature, span, U-value, fire resistance and acoustics. 
    TrayPan contains two user interfaces:
     - Optimisation tool for quick and easy pre-selection
     - Designer version for detailed structural analysis.

    Download Traypan

    Detail drawing (.dwg)

    Detail drawing (.pdf)

    Load & span tables for dimensioning panels against loads

    Sound insulation values

    Accessories for sandwich panels include flashings, fasteners, gaskets, and sealing flanges.

    These accessories ensure fast assembly, fastening reliability, joint tightness, and aesthetic improvement. They are suitable for external and internal wall surface construction, as well as roofs - for construction projects of various sizes at any destination.

    Assembly instructions

    Assembly instructions document includes information about:

    • Packing
    • Transportation and unloading
    • Storing
    • Assembling

    Maintenance instructions

    Maintenance instructions document contains information about:

    • Washing
    • Painting

    Product descriptions

    Product description includes information about:

    • Panel structure
    • Structural dimensioning
    • Panel packaging
    • Windows and corner panels
    • Panel fastening

    Facade cladding instructions

    Ruukki Forma design instructions explain how to design façade cladding systems on top of Ruukki sandwich panels.