Masonry mortar M100/600

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Product description

Fescon Masonry Mortar M 100/600 is a cement-based dry mortar. The maximum grain size is 2.0 mm. Suitable for facade and wall partition masonry. For brick work jointing, jointing of natural and slate stones on vertical surfaces and for repairing existing mortar joints. For cold flue parts in chimney masonry, such as in cold attics and above the roof. 


  • For facade and wall partition masonry 
  • For brick work jointing and jointing of natural and slate stones on vertical surfaces
  • For repairing existing mortar joints
  • For the masonry of the outer brick shell of the fireplace
  • For cold flue parts in chimney masonry, such as in cold attics and above the roof
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
6416841530387 MASONRY MORTAR 100/600 25 KG 53038 25 kg
6416841330376 MASONRY MORTAR M100/600 500 KG 33037 500 kg
6416841330383 MASONRY MORTAR 100/600 1000 KG 33038 1000 kg
6416841530394 MASONRY MORTAR 39 QUARTZ WHITE 25 KG 53039 25 kg
6416841330390 MASONRY MORTAR 39 QUARTZ WHITE 33039 1000 kg
6416841530592 MASONRY MORTAR 59 BIRCH BARK WHITE 25 KG 53059 25 kg
6416841330598 MASONRY MORTAR 59 BIRCH BARK WHITE 33059 1000 kg
6416841530400 MASONRY MORTAR 40 LIME GREY 53040 25 kg
6416841330406 MASONRY MORTAR 40 LIME GREY 33040 1000 kg
6416841330413 MASONRY MORTAR 41 GRAIN YELLOW 33041 1000 kg
6416841330420 MASONRY MORTAR 42 BRICK RED 33042 1000 kg
6416841330451 MASONRY MORTAR 45 EARTH BROWN 33045 1000 kg
6416841530462 MASONRY MORTAR 46 PEAT BROWN 25 KG 53046 25 kg
6416841330468 MASONRY MORTAR 46 PEAT BROWN 33046 1000 kg
6416841530486 MASONRY MORTAR 48 BLACK GREY 25 KG 53048 25 kg
6416841330482 MASONRY MORTAR 48 BLACK GREY 33048 1000 kg
6416841530523 MASONRY MORTAR 52 LINEN LIGHT 25 KG 53052 25 kg
6416841330529 MASONRY MORTAR 52 LINEN LIGHT 33052 1000 kg
6416841330444 MASONRY MORTAR 44 SAND BROWN 33044 1000 kg
6416841339225 MASONRY MORTAR 71 SWAN 33922 1000 kg
6416841339263 MASONRY MORTAR 72 BELOW 33926 1000 kg
6416841339270 MASONRY MORTAR 73 CUCKOO 33927 1000 kg
6416841339218 MASONRY MORTAR 74 HAWK 33933 1000 kg
6416841339249 MASONRY MORTAR 75 LARK 33924 1000 kg
6416841339201 MASONRY MORTAR 77 JACKDAW 33920 1000 kg
6416841339256 MASONRY MORTAR 79 PTARMIGAN 33925 1000 kg
6416841339287 MASONRY MORTAR 80 SIBERIAN JAY 33928 1000 kg
6416841339324 MASONRY MORTAR 81 TEAL 33932 1000 kg
6416841339218 MASONRY MORTAR 82 CAPERCAILLIE 33921 1000 kg
6416841339362 MASONRY MORTAR 83 WILLOW GROUSE 33936 1000 kg
6416841339348 MASONRY MORTAR 85 RAVEN 33934 1000 kg
6416841339355 MASONRY MORTAR 86 HAZEL HEN 33935 1000 kg
  • The temperature of the masonry brick or structure is above 0°C
  • Brick, natural stone, slate
  • Brick pallets are protected from rain. The bricks must not be wet or covered with snow or ice.
  • Masonry structures are not primed
Mixing and application of the product
  • Masonry work should not be carried out in direct sunlight, in the rain or during strong winds.
  • The working temperature should be between +5°C and +25°C.
  • A bag (25 kg) of dry powder is mixed with 3.0 to 3.5 litres of clean water. 
  • Do not add all the water at first. The mixture contains the correct amount of water when the mortar holds its shape and no water rises to the surface.
  • The amount of water must be as instructed in the product card. Deviating from the recommended amount of water lowers the mortar’s strength properties, increases the risk of separation, affects the strength development and reduces workability. 
  • Product is mixed with a mortar stirrer, in a concrete mixer, or with a pan-mixer or a continuous mixer to a smooth consistency. The maximum mixing time is approx. 10 minutes.
  • If the working conditions are very dry or warm, it is possible to improve the adhesion by dampening the masonry joints or bricks. There should not be water drops on the substrate.  
  • Keep the amount of water the same during jointing, because any variations in the amount of water will show as colour differences in the joint.
  • The jointing technique affects the density of the mortar joint. Finish the jointing by sealing them with a brick jointer and removing any excess mortar from the brickwork by brushing diagonally over the joints with a masonry brush.
  • The expansion joints are provided as defined in the structural plans.
  • The working time of the mortar is about 3 hours. 
  • When finished working, wash the tools immediately with water.
  • Remove any dried mortar mechanically.
  • After casting you should keep the mortar joints moist by fog spraying for about 3 days depending on the conditions or the target.
Repointing to a previously masonry joint
  • Available in 20 standard colours. Special colours are subject to order.
  • When repointing, the old mortar must first be removed to a depth of at least 20 mm, but no more than 15% of the masonry depth or according to the designer’s instructions. 
  • The joint is cleaned of dust and dampened.
  • In repointing, the existing mortar joint is removed to a depth of at least 15 mm.
  • The joint is cleaned of dust and dampened.
  • When repointing, add the dry powder to the instructed amount of water and let it stand for about 10 minutes. After that, remix the paste and add masonry mortar to make the paste semi-dry. This mixing method ensures the sufficient air content of the mortar.
  • When repointing, start first with vertical joints and after that work with the horizontal ones. Repoints that are over 20 mm are done in two phases.
  • The working time of a semi-dry mortar for repointing is 1 to 2 hours.
  • Bases or masonry units with low water absorption are repointed with Repairing plaster KL 1.2 or Facade coating JSP 1.5.
Other points to note
  • Construction planner instructions and official regulations are to be followed in all masonry work.
  • Not suitable for masonry of the inner shells of fireplaces or wood-burning stoves nor masonry of chimney flues indoors.
  • Masonry mortars may have slight differences in shade between small and big bags, as well as between the mortars intended for winter and summer time masonry, so it is not advisable to change the type of mortar in the middle of the wall.
  • Meets the requirements of Annex 4 of the national standard SFS 7001.

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

Material usage

approx. 1.2 kg/MRT
approx. 1.5 kg/NKH
approx. 1.7 kg/NRT

Water requirement 3.0 - 3.5 l / 25 kg bag
Finished compound 13 - 14 l / 25 kg bag
Type powder
Colour available in 20 standard colours, special colours subject to order
Maximum grain size

2,0 mm

Package size 25 kg assorted colours, 500 kg (gray) and 1000 kg

storage time in a dry location approx. 1 year


substances that improve workability and weather resistance

Usage temperature


Workability time 3 h
Compressive strength

M 5

Adhesion strength

≥0,16 N/mm2 (SFS-EN 998-2, 5.4.2 a)

Reaction to fire A1
Heat conductivity 0,67 [w/(m•K)], P=50%
Chloride content < 0,01 % (EN 998-2:2016)
Frost resistance yes
Water vapour permeability

µ 15/35

Water absorption by capillarity

0,2 kg/(m2 · min0,5) (EN1015-18)