Cement plaster S 30 C30/37

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Product description

Fescon Cement Plaster S 30 is a cement-based dry mortar. The maximum grain size is 3.0 mm. 

  • Easy to use
  • Rubbable
  • Good workability characteristics
  • Frost-resistant
  • Good grip on the base
  • Layer thickness 10 - 70 mm


  • Repairs of cast defects in concrete structures
  • Thin-cast floor surfaces
  • Jointing of prefabricated concrete elements
  • Plastering of foundation walls made from blocks, e.g. top and bottom joints of wall elements
The product is listed in the portal for building products that can be used in Nordic Swan Ecolabelled buildings.
GTIN code Product name Product number Package size
6416841530202 CEMENT PLASTER S 30 C30/37 25 KG 53020 25 kg
6416841330208 CEMENT PLASTER S 30 C30/37 1000 KG 33020 1000 kg


Clean the base of loose dust and dirt. Remove cement paste from concrete surfaces. Wet the dry base until it darkens. The best time to wet the surface is the previous night.


Refer to the bag for how much water the plaster requires. Add the dry material to the water and mix with a concrete mixer for around five minutes. With a power mixer or a drill paddle, around one to two minutes of mixing is sufficient. Allow the plaster to stand for around ten minutes and mix it again for a short while. Find the correct consistency at this stage by gradually adding the rest of the water. We do not recommend adding all of the water right at the start. The finished plaster remains workable for around two hours.


Apply the plaster to the casting location that is damp enough to be darker in colour, and compact carefully. In floor surface casting, the old base can be reinforced with plastic dispersion spread on a dry surface.


In plastering, the plaster is slammed into a surface that is damp enough to be darker in colour. Recommended layer thickness is around 20 mm.

After treatment

You must care for the fresh casting and plastering surface by spraying with water and/or protecting it with a plastic film. The need for aftercare depends on the conditions. It should continue for at least one to three days.

Storage and handling of waste
See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank

Material usage

20 kg/m2 with a 10 mm layer thickness

Water requirement 2.5-3.1 l/25 kg
Finished compound 12 - 13 l / 25 kg bag
Type powder
Colour gray
Maximum grain size

3 mm (the shape of natural stones may vary)

Package size 25 kg and 1000 kg

storage time in a dry location approx. 1 year

Layer thickness

10 - 70 mm

Lowest usage temperature


Workability time 2 h
Strength class C 30/37
Reaction to fire A1
Exposure class XF 1, XC 4, XD 2 (50 years)
Frost resistance Frost-resistant
Limitation of liability, product use notes and restrictions: Please familiarize yourself with Fescon Oy's general terms of delivery and the design and work instructions related to the product.