CONCRESEAL® PLASTERING-M for waterproofing, levelling, protection and more


CONCRESEAL® PLASTERING-M for waterproofing, levelling, protection and decoration of concrete and masonry, in one single layer with thickness between 3 and 5 mm.
25 Kg in White and Grey


CONCRESEAL® PLASTERING-M for waterproofing, levelling, protection and decoration of concrete and masonry


Concreseal Plastering pools buildings n more

What is Concreseal Plastering M – DESCRIPTION

CONCRESEAL® PLASTERING-M is a mono-component mortar composed of cements, carefully controlled silica aggregates and special additives, designed for waterproofing, levelling, protection and decoration of concrete and masonry, in one single layer with thickness between 3 and 5 mm.
It is also available with smaller aggregate size version CONCRESEAL® PLASTERING-M REGULAR, for a smoother cosmetic finish.

Where Concreseal Plastering M is used – APPLICATION FIELDS

  • Levelling, waterproof protection and decorative layer with minimum thickness in swimming pools, on façades, masonry units: pre-cast elements, bricks, rendered walls, etc.
  • Protection of MAXSEAL, MAXSEAL SUPER and MAXSEAL FLEX against abrasion, impacts and wearing in water channels, pipelines, settlement tanks in waste water treatment plants, etc.
  • Protection of concrete to weathering and freeze-thaw cycles.
  • Protection for concrete exposed to abrasion and high flowing water in wastewater treatment plants, dams, waterfalls, channels, pipelines, etc..
  • Levelling, finishing and protection on façades and partition walls in new buildings, residential buildings or restoration works in areas subject to marine environment.

ADVANTAGES and Benefits

  • Avoid substrate damage due to the water ingress and other aggressive chemicals.
  • Serves three functions: waterproofing, protection and decoration in a single application.
  • High impact resistance, abrasion and wearing exposed to water flows.
  • Adds aesthetic uniformity, maintaining architectural details of fluting, vertical lines, decorative mouldings, etc.
  • Permeable to water vapour, allows the substrate to breath, and allows finishing on Drizoro Maxseal Foundation, Drizoro Maxseal Flex, Drizoro Maxseal Super in negative waterproofing works.
  • Suitable for use in contact with drinking water. Non toxic and does not contain chloride.
  • Very good adhesion to substrate. It fills and seals porosity of the surface and becomes part of the structure of the substrate. No primer/bonding agent is required.
  • Resistant to UV rays and aggressive environments: seacoasts, zones with air pollution, etc. Long-lasting solution, no maintenance required.
  • Fully compatible with cement-based coatings Drizoro Maxseal Foundation, Drizoro Maxseal Flex, Drizoro Maxseal Super, etc.
  • Easy to apply by trowel, roller or spay methods.
  • Environmentally friendly: non-toxic, cement-based and solvent-free product.


Surface preparation
Substrate must be structurally sound, firm, without cement laitance and as uniform as possible, and preferably with a slight roughness, i.e. open textured surface. For applications on old renders, tensile strength should be at least 1,0 N/mm2. Surface must be clean and free of paints, coatings, efflorescence, loose particles, grease, oils, curing agents, form release agents, dust, gypsum plasters, organic growth or any other contaminants that may affect adhesion.
For cleaning and preparing the substrate, preferably in case of smooth and/or poorly absorbent substrates, use wire brush, sand blasting or high pressure water cleaning methods, not aggressive mechanical means.

Surface defects, voids and static cracks without movement, once opened and routed to a minimum depth of 2 cm, must be repaired with MAXREST® (Technical Bulletin No. 2) to provide a sound and even surface.
Rebars and other metal elements exposed during the substrate preparation should be cleaned and passivated with MAXREST® PASSIVE (Technical Bulletin No. 12), while non-structural and surface iron elements must be cut to a depth of at least 2 cm and then covered with MAXREST®.
Substrates affected by internal salt crystallization, should be treated, contact office for details.
Once substrate has been repaired and cleaned, it must be saturated thoroughly with water but do not leave free standing water before application. If it gets dry, saturate with water again.


A 25 kg bag of CONCRESEAL® PLASTERING-M requires from 4,0 to 4,5 litres (17±1%) of water for trowel or roller applications.
For spay applications, a 25 kg bag of CONCRESEAL® PLASTERING-M requires from 5,0 to 6,0 litres of water, according to application temperature and desired finish.
Pour the required amount of mixing water in a clean container followed by CONCRESEAL® PLASTERING-M, and mix by slow speed electric drill (400-600 rpm) fitted with a disc mixer for about 2-3 minutes until achieving a lump-free and homogeneous mortar.
Do not mix for prolonged period nor use high-speed mixer, which may introduce air bubbles.
Allow the mixture to rest for 3 to 5 minutes to fully wet out all the powder, and remix briefly before applying.

Application Trowel application:application of Drizoro Concreseal plastering

Apply the mortar onto surface by trowel in an even and thick layer with a recommended consumption of 1,7 kg/m2 per mm thickness. Make sure CONCRESEAL® PLASTERING-M is firmly pressed into all voids and apply in layers between 3 to 5 mm thickness.
When mortar starts to set, i.e. from 20 to 30 min depending on ambient conditions, surface can be finished with a sponge, wood, plastic float or trowel, depending on the desired texture.


When CONCRESEAL®PLASTERING-M is applied to a previously applied Membrane i.e. MAXSEAL, MAXSEAL FLEX, MAXSEAL SUPER, etc. it is recommended to use a mix of 50% water and 50% BONDCRETE as the mixing liquid.

Spray application:

Fill any honeycombs or non-structural void deeper than 5 mm with CONCRESEAL® PLASTERING-M by using a trowel, and then spray one layer of CONCRESEAL® PLASTERING with 3 to 5 mm thickness and covering areas from 6 to 8 m2. Once it sets, additional layers can be sprayed as needed to achieve a desired thickness or provide a uniform texture, maintaining the same distance from the surface.
For negative water pressure or water immersion conditions, use Drizoro Maxseal Foundation, Drizoro Maxseal Flex, Drizoro Maxseal Super as waterproof coating.
After 7 days of curing time, then apply CONCRESEAL® PLASTERING-M as finish.

To prevent shadowing on deep masonry joints or areas with extreme unequal absorption, apply one coat of MAXSEAL® / F o u n d a t i o n in order to obtain a more regular and homogeneous surface.
Application conditions
Do not apply when rain is expected within 24 h after application.
The optimum temperature range for application is from 10 ºC to 30 ºC. Do not apply with substrate and/or ambient temperature is at or below 5°C, or when temperatures are expected to fall below 4 °C within 24 h after application. Do not apply to frozen or frost-covered surfaces.
For applications at cold temperatures, do not wet the surface excessively.
For applications at hot temperatures (> 30 ºc), low relative humidity and/or windy conditions, i.e. summer time, surface must be wet thoroughly with plenty of water prior to application. Avoid direct exposure to sunlight with extreme heat.


Prevent a quick drying of CONCRESEAL® PLASTERING-M and protect from extreme heat (>
30 ºC) with direct sunlight to maintain its moisture for at least 24 hours after the application, spraying a fine mist of water without washing out the surface, or by using polyethylene sheeting or damp burlaps. Do not apply curing agents.
Allow CONCRESEAL® PLASTERING-M to cure for at least 7 days (20 ºC and 50% R.H.) before water immersion. Lower temperatures and/or higher H.R. values increase the curing time.


All tools and equipment must be cleaned immediately with water after use. Once product hardens, this can only be removed by mechanical means.


Estimated consumption of CONCRESEAL® PLASTERING-M is 1,7 kg/m2·/mm.
This figure is for guidance only and may vary depending on porosity, texture, substrate conditions and application method. Perform a preliminary test on job-site to ascertain the total consumption exactly.<small


Do not add cement, additives, aggregates or other compounds.
• Use the recommended mixing ratios for both mortar and mixing liquid.
Do not use leftovers from previous mixes.
• To restore the workability, remix the mortar but never add more water. Mix and use.

Do not mix more material than can be applied in 20-30 minutes.

• Observe the recommended consumption and thickness per layer.
• Allow new concrete and mortars a curing time of 28 days before application.
Do not apply on vitrified or enameled substrates, or with water repellents. Do not apply on bituminous materials, wood or paints.
• When coating over existing renders, compatibility, strength and adhesion testing of the substrate must be ensured.
Do not use in contact with very soft water, acid water and/or carbonic water.
• For other uses not specified in this Technical Bulletin or further information consult the Technical Department


CONCRESEAL® PLASTERING-M i s supplied in 25 kg bags or drum. It is available in grey and white colour.


Twelve months in its unopened and undamaged original packaging. Store in a cool, dry and covered place, protected from moisture, freezing and direct sunlight at temperatures above 5 °C.


CONCRESEAL® PLASTERING-M is not a toxic product but has an abrasive composition. Avoid direct contact with skin and eyes, and breathing dust.
Use rubber gloves and safety goggles when handling, mixing and applying the product. In case of contact with skin, wash affected area with soap and water.
In case of contact with eyes, rinse immediately thoroughly with clean water but do not rub. If the irritation persists, seek medical assistance.
Consult the Material Safety Data Sheet for CONCRESEAL® PLASTERING-M.

Disposal of the product and packaging

Should be carried out according to the current official regulations.
And is the responsibility of the final user of the product.



* This figure is for guidance only and may vary depending on porosity, texture, substrate conditions and application method. Perform a preliminary test on job-site to ascertain the total consumption exactly.




The information contained in this leaflet is based on our experience and technical
knowledge, obtained through laboratory testing and from bibliographic material.
DRIZORO®, S.A.U. reserves the right to introduce changes without prior notice. Any use of this data beyond the purposes expressly specified in the leaflet will not be the Company’s responsibility unless authorised by us. W e shall not accept responsibility exceeding the value of the purchased product. The data shown on consumptions, measurement and yields are for guidance only and based on our experience. These data are subject to variation due to the specific atmospheric and jobsite conditions so reasonable variations from the data may be experienced.  A test on the jobsite must be done, and it will be carried out under the client responsibility. We shall not accept responsibility exceeding the value of the purchased product. For any other doubt, consult our Technical Department

Additional information

Weight N/A

Grey, White