3i-light wall panels RD 300

Division walls Flat partions Lining of Internal walls

3i- Wall panels are made of a mixture of cement and polystyrene granulate with
the bulk density of 300 kg/m3. They are designed for the construction of the
division walls, flat partions, cellars, lining of internal walls, etc. For their
low weight they are also suitable for building lofts. The good thermal
insulation, high fire resistance, sound insulation and the fast assembly
with the tongue-groove system offer innovative solutions both in terms
of installation time and cost.


  • Fast and simple assembly - cost and time savings
  • Fire protection A2-s1,d0
  • No health risk
  • Tongue and groove assembly system - eliminates thermal bridges


3i-Light wall panels RD 300

format thickness
250 - 320/58,5 cm tongue-groove 8 - 30 cm with tongue groove
Other height and thickness on request

Technickal data

Bulk density 300 kg/m3
Diffusion resistance factor μ=7
Class of reaction to fire A2-s1,d0
Fire resistence EI 90, E120
Thermal conductivity Lambda λ r = 0,090 W/mK
10% deformation pressure strenght Mpa=0321
Tensile strength at bend 0,359 N/mm2 without plaster 0,476 N/mm2 with plaster

Surface finish

3i-wall panels can be plastered with conventional materials such as cement, lime or gypsum plaster using a mesh, both manually and mechanically. The exposed areas must be free from dirt and dust and slightly sprayed with water before being plastered. To prevent cracks, it is necessary to perform expansion joints in the area of the top and side joints.


The tiling of the 3i-wall panels is carried out in a standard manner. The facing tiles are glued with a conventional adhesive using a reinforcing fabric. Panels must be free from dirt and dust.


Store dry on a flat surface to prevent bending.

steny1-1.jpg, 55 kB


steny1-2.jpg, 105 kB

steny2-1.jpg, 272 kB


The 3i-insulating plates weighing 300 kg / m 3 are fit into each other on the tongue- groove. All gaps are also sealed with the mounting foam. To ensure good adhesion of the mounting foam, all bonded surfaces must be moistened with water.

Upper and lower anchorages

Fixing to the ceiling is done by 3-anchor angles. The gap must not be larger than 20 mm and must also be filled with the mounting foam. At the bottom, the panel is laid directly into the foam and also secured with an anchor.

steny2-2.jpg, 5 kB

steny2-3.jpg, 16 kB


The grooves for the electrical, water and sewerage lines are made by a manual grooving milling machine using the drill bit for the boxes.

steny2-4.jpg, 55 kB

steny2-5.jpg, 31 kB


steny2-6.jpg, 31 kB


steny3.jpg, 239 kB