MAXJOINT® FLEX – crack filling pointing mortar ceramic tiles



It has very high adhesion to building materials and an increased capacity to absorb substrate deformation. It is suitable for crack filling and pointing mortar on ceramic tiles stone, brick, etc. Maxjoint flex pool-resistant to algae, and fungi.
Available in White and Grey


Drizoro MAXJOINT® FLEX – crack filling pointing mortar ceramic tiles

Technical Brochure | MSDS



Drizoro Maxjoint Flex is a one-component, cement based mortar formulated with selected aggregates and special additives that provides very high adhesion to building materials and a high capacity to absorb substrate deformation. It is suitable for crack filling pointing mortar ceramic tiles, stone, brick, etc. Also available is the type MAXJOINT® FLEX POOL, with high microbiological resistance against the growth of algae and fungi on the surface.


  • It pointing joints in brick, stone, concrete blocks, and all types of masonry for outdoor and indoor applications.
  • Pointing of tiles over substrates subject to movements such as facades, terraces, wood, floor heating systems, outdoor pavements, etc.
  • Combined with Drizoro Maxseal Flex or Drizoro Maxjoint Flex providing a fully flexible system in swimming pools, water reservoirs, fountains, etc.
  • Pointing in areas with environmental conditions favourable to bacterial reproduction such as swimming pools, wastewater treatment plants, aquariums, hospitals, schools, laboratories, industries, etc.
  • Applications are exposed to a wide range of temperatures or relative humidity.


  1. Suitable for pointing to all types of ceramic tile (glazed or unglazed), marble, porcelain mosaic, etc.
  2. High microbiological resistance type reduces the maintenance costs and provides healthy and safer conditions.
  3. Excellent bond strength on every surface.
  4. It waterproofs the joint from rainwater.
  5. It hardens without stress and cracks on joints up to 20 mm in width.
  6. Suitable for permanent immersion.
  7. Excellent colour stability.
  8. Available in several colours under request.
  9. Easy to use and clean.


Surface Preparation

Allow 24 – 48 hours of curing for bonding mortars after tiling and before applying MAXJOINT®

In new tiling jobs set suitable size plastic spreaders in order to maintain the right tile wound. Remove all excess bonding mortar in the joints. The joints must be free of dust, grease, and loose
particles of the bonding mortar, or any other dirtiness that may affect the adherence of the product.

Clean all joints with water pressure.  Prior to application dampen the surface but do not leave any puddles of water in the joint.

All expansion joints must be treated with a suitable MAXFLEX® sealant.


MAXJOINT® FLEX is mixed with 4,75 a 5,75 (19 -21%) litres of clean potable water. Add the required amount of clean water to a clean container, according to the ambient conditions and the desired consistency and pour slowly MAXJOINT® FLEX. Mix either manually or mechanically by a low speed drill (400 – 600 rpm) until achieving a homogeneous mixture and lump free.

Allow the mix to rest for 4 – 5 minutes and re-mix briefly before application

Prepare the quantity of MAXJOINT® FLEX that can be applied in one hour. After 30 minutes, can be mixed again the mixture in order to keep the workability of the mortar but do not add more water.


Use a trowel or rubber float to spread and press into the joints until they are completely full.

For the pointing tiles in ceramic or porous brick is advisable to use a caulking gun for placement of the mixture into the joint avowing the risk of staining the tiles. Before the initial setting time of Drizoro Maxjoint Flex

When the mortar starts getting matt, use a tuck-pointing trowel in order to get a smooth finish off the surface.

Application conditions – do not apply to the substrate: 

  • No rain expected, within 24 hours of your application.
  • where the ambient temperature is at or below 5°C or is expected to fall below 5 °C within 24 hours.
  • frozen surfaces or frost covered surfaces.
  • where temperatures are expected to exceed  35 ºC, low relative humidity, direct sunlight and/or windy conditions, the surface must be wet thoroughly with plenty of water prior to application.
    Protect from high temperatures (> 35 ºC), moderate to high winds, low humidity conditions or direct sunlight exposure, i.e. in the summertime. Damp the substrate with water.


Prevent rapid drying of MAXJOINT® FLEX and protect from extreme heat and direct sunlight, keeping its moisture for at least 24 hours after application, spraying a fine mist of water, without causing the washing out, or by using polyethylene sheeting, damp burlaps, etc.

Allow MAXJOINT® FLEX to cure for at least 1 day at 20 ºC and 50% for pedestrian traffic and 7 days before water immersion or flooding test.

Lower temperatures and/or higher R.H. values increase the curing time.


Clean with a wet sponge or cloth while the mortar is still fresh to remove any excess mortar from the joint or face of the tile. All tools and equipment can be clean with water immediately after application. Once MAXJOINT® FLEX hardens is
removed only by mechanical means.

MAXJOINT® FLEX black colour, after 5 – 7 curing days, will require washing with water pressure to remove any possible stain of black loose particles


One kilogram of MAXJOINT ® FLEX fills a volume of approximately 0.6 litres.
The estimated consumption depends on the dimensions of the tile and the board, which can be calculated from the following formula:
Consumption (kg / m 2 ) = ((A + B) / (A * B)) * C * D * 1,75
A: Tile width (mm). B: Tile length (mm) C: Joint depth (mm). D: Width of joint (mm).
So for a surface coating with 20 x 20 ceramic tiles with 10 mm of tile wound width and 10 mm tile wound depth the consumption of MAXJOINT® FLEX is 1,75 kg/m2
So, to fill a joint 10 mm wide and 10 mm depth is required of 1.75 kg / m² for tile-coated surface ceramics of 20 x 20 cm.
Consumption may vary depending on the porosity and irregularities of the support and tile, as well as the application method. Conduct an in-situ test to get a true or exact value.


  • Do not add types of cement, additives, aggregates or other compounds.
  • Use the recommended mixing water to powder ratio.
  • Do not use leftovers from previous mixes.
  • To restore the workability, remix the mortar but never add more water.

For further information or questions regarding the application of the product, consult the Technical Department.


MAXJOINT ® FLEX is available in 25 kg bags. Available in grey and white standard colours.
MAXJOINT ® FLEX is also available POOL, a variant with high microbiological resistance against algae and fungi, which prevents the proliferation of Molds on the mortar. Recommended especially for places where environmental conditions favour the development of
microbiological, such as swimming pools, plant


Twelve months in its original unopened packaging, in a dry and covered place, protected.


MAXJOINT® FLEX - crack filling pointing mortar ceramic tiles

Additional information

Weight 25 kg

Grey, White


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