Block mortar M100/500

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Product description

Fescon Block Mortar M 100/500 is a masonry cement based dry mortar. The maximum grain size is 3.0 mm. 

  • Easy to use
  • Good workability characteristics
  • Frost-resistant


  • Lightweight aggregate and concrete block masonry
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
6416841530493 BLOCK MORTAR M100/500 25 KG 53049 25 kg
6416841330499 BLOCK MORTAR M100/500 1000 KG 33049 1000 kg

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 ten minutes. With a power mixer or a drill paddle, around two to three 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 three hours.

Work instructions

The lowest working temperature is +5°C. The temperature of the stones must be above 0°C. When the temperature is below +5°C, use Fescon winter plaster for the masonry work. Follow the instructions of the designers and official regulations in masonry work. National Building Code of Finland B8, Brick Structures. Instructions 2007. SFS handbook 176.

Storage and handling of waste
See the separate storage and disposal instructions

Material usage

approx. 4 kg / H75-UH150
approx. 7 kg/UH 200 - RUH 380

Water requirement 2.7-3.3 l/25 kg
Finished compound 13 - 14 l / 25 kg bag
Type powder
Colour gray
Maximum grain size

3 mm

Package size 25 kg and 1000 kg

storage time in a dry location approx. 1 year

Lowest usage temperature


Workability time 3 h
Strength class M 10
Nominal shear resistance

> 0.16 N/mm2 (avg)

Reaction to fire A1
Chloride content < 0,01 %
Frost resistance yes