FM 344 Fine levelling mortar

codex FM 344 is a low-slump, fine-grained levelling mortar with light-weight fillers for layer thicknesses from 1.5 mm to 30 mm. The lightweight plaster is very low-slump and is therefore ideal for use on walls.


  • For producing flat wall surfaces
  • For levelling, shaping and smoothing
  • For producing slopes in areas of drains and gutters
  • In damp and wet areas
  • On balconies and terraces
  • Under ceramic tiles and natural stone floor coverings
  • For floor and wall surfaces
  • For heated substrates
  • On calcium sulphate and cementitious screeds, concrete
  • On old surfaces with firmly adhering, waterproof adhesive residues
  • As fixing mortar for tile support elements (coated rigid foam panels).
  • On old surfaces, such as tiles, slabs and terrazzo
  • For domestic, industrial and commercial areas
  • on masonry, cement and lime cement plaster


  • Thickness range from 1.5 mm to 30 mm
  • Very good low-slump properties for processing on walls
  • Quick-setting
  • High coverage
  • Low-tension
  • Quickly ready for covering from 2 hours
  • Universal use
  • Waterproof and frost-resistant
  • Very smooth and easy to apply
  • Low chromate content acc. Regulation (EC) No. 1907/2006 (REACH)
  • Highest quality level 4 according to DGNB criterion ENV 1.2 Risks for the local environment
  • EMICODE EC1 PLUS/very low-emission
  • For healthy constructions

The low-slump and fine codex FM 344 levelling mortar is ideal for levelling unevenness of up to 3 cm on walls.

Technical data

*At 23 °C and 50% relative humidity.
Pack type

paper bag

Pack size

25 kg

Shelf life

12 months



Minimum working temperature

+ 5 °C to + 25 °C

Ideal working temperatures

+ 10 °C to + 25 °C

Water quantity required

0.2 - 0.26 litres/ kg
5 - 6.5 litres/ 25 kg

Working Time/ Pot Life

approx. 30 minutes*

Set to foot traffic

after approx. 1.5 hours*

Ready for covering

with tiles: after approx. 2 h
with natural stone: after approx. 24 h

Final strength

after approx. 28 days*


approx. 1.3 kg/m²/mm layer thickness

Ordering information

Article Packsize Shipping unit
codex FM 344 / 25 kg 162017 25 kg
Pallet :
42 bags

Quality seals and badges


Products and accessories

Basket spiral stirrer

The basket spiral stirrer is a very stable stirring attachment for effective mixing of thin and medium bed mortars.

Mixing bucket 30 l

The codex mixing bucket is a very sturdy plastic bucket with handles for mixing all codex powder and epoxy products.

Power X 1000

The Power X 1000 mixer is a powerful 1010 Watt mixer for mixing adhesive mortar and levelling compounds. The Wolff Power X 1000 includes a type KR 120 stirrer.

Water bucket Water bucket

The codex water bucket is a transparent plastic bucket with an imprinted litre scale for measuring the correct amount of water for codex powder products.

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