Gb 30
EN 13813 CT C12 F4 en

GB 30


Cementitious floor screed suitable for filling and leveling of floors to be covered with tiles, marble, granite, etc. It does not contain any lime. Simply mix with water. Recommended for application thickness 3 to 15cm.


Bags of 40 kg

Big bags of 1000 kg

In bulk in a silo with capacity of 12 – 18 – 22 m³




Application Temperature

+5°C to +35°C


16 – 17 kg per m² for 1 cm of thickness



5 – 5,5 lt/ bag


16 – 17 kg per m² for 1 cm of thickness

Specific Weight of Fresh Mortar

2000 kg/m³

Download the relevant technical files:


Use for filling, leveling and sloping of floors, to create a final surface suitable for fixing ceramic tiles, marbles or granites. You can use it indoors or outdoors (balconies, roofs, flat-roofs, etc.). Also for underfloor heating systems. It does not crack. It does not affect pipes. Recommended application thickness: 3 to 15 cm.


  • High strength
  • Excellent adhesion
  • Moisture- and frost-proof
  • Prevents cracking
  • Excellent final surface
  • Indoor and outdoor use
  • Easy to apply
  • Excellent workability
  • Fast to prepare
  • Stable quality
  • Make sure that the surface is clean, stable, free of dust, grease etc.
  • It is recommended to wet the surface before the application.
  • Mix by means of a cement mixer or the special machines supplied by MARMOLINE, with the necessary quantity of water, until a homogeneous, lump-free mixture is obtained.
  • The quantity of water added corresponds to the desirable fluidity. It is recommended to add 5 -5.5 kg of water in a 40 kg bag.
  • For making inclinations, reduce the quantity of water.
  • Spread the mortar on each room separately, by placing wooden laths at the doors, with 1 cm thickness. Then remove the laths and do not fill the joints left. It is recommended to create expansion joints per 20 m² of surface during the application of the cement screed.
  • Step on the floor after at least 12 hours and fix tiles or marbles after 48 hours, depending on the prevailing weather conditions.
  • The recommended final thickness should be between 3 to 15 cm.
  • Application temperature +5°C to +35°C.
  • Mixing water: 5 – 5.5 lt of water /bag of 40 kg.