Maxseal Flex

(1 customer review)


MAXSEAL-flex-LOGOWaterproofing of below-grade structures – basements, retaining walls, foundations, tunnels, subjected to both positive or negative high water pressure. Protects concrete against carbonation, dampness, rain, pollution and aggressive environments, freeze-thaw cycles, chlorine penetration in irrigation channels, dams, and water treatment plants, bridges, Tile fixing, bathrooms, kitchens and other wet areas in hotels, hospitals, offices and residential buildings
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Drizoro Maxseal Flex flexible waterproofing membrane coating

Drizoro Maxseal Flex flexible waterproofing membrane coating

Cement-based Coating – cementitious flexible waterproof membrane coating for sealing Positive And Negative Pressure For Concrete And Masonry. Comes in White & Grey

Technical Brochure | MSDS Part A | MSDS Part B




Description –flexible waterproofing membrane

Drizoro Maxseal Flex is a two-component product producing a continuous cementitious flexible waterproofing membraneComponent “A” is a water-based special acrylic resin and component “B”, is a mortar based mixture of special cements, additives and well-graded aggregates.

Once applied and cured, Drizoro Maxseal Flex provides a non-toxic, flexible and waterproof coating with very high adhesion on those common substrates in construction concrete, natural and artificial stone, traditional mortar plasters, bricks, concrete blocks, Hebel etc.

Benefits of Drizoro Maxseal Flex, flexible waterproofing membrane, cementitious flexible waterproofing membrane


  • Waterproofing and protection of water retaining structures, such as drinking water tanks, reservoirs, water mains and swimming pools.
  • Waterproofing of below-grade structures like basements, retaining walls, foundations, tunnels, galleries subjected to both positive or negative high water pressure.
  • Internal and external waterproofing and protection of new and old buildings, facades against dampness, rain, pollution and aggressive environment.
  • Waterproofing and protection of concrete against carbonation, and chlorine penetration in public works, irrigation channels, dams, retaining walls and water treatment plants, bridges, etc.
  • Tile fixing and waterproofing of roofs under tiles and pavement in terraces, balconies, bathrooms, kitchens and other wet rooms in hotels, hospitals, offices and residential buildings, in indoor or outdoor use.
  • Waterproofing of window boxes, gardens and other surfaces subject to root penetration.
  • Water retention structures.

Advantages and Benefits of Drizoro Maxseal Flex:

Here are 14 Benefits of Drizoro Maxseal Flex

  1. Provides a fully flexible waterproofing membrane which ensures complete waterproofing in the most severe conditions,
  2. even seals in the presence of high negative or positive water pressure.
  3. Covers shrinkage and hairline cracks in the concrete.
  4. Acts as an anti-fracture membrane between the substrate and other finishing coats.
  5. Excellent protection for concrete, being both a CO2 and chlorine (Cl-) barrier and thereby preventing carbonation and electrochemical corrosion.
  6. Permeable to water vapour, allows the substrate to breathe.
  7. Resistant to abrasion and is UV stable.
  8. Withstands atmospheric pollution, corrosive effects of saltwater and freeze/thaw cycles.
  9. Resists hydrostatic negative and positive pressure from groundwater when used for interior underground applications.
  10. Excellent adhesion and easy to use. Does not require bonding agents and can only be applied on wet surfaces.
  11. Non-toxic and chloride free. Suitable for contact with potable water.
  12. Longer lasting than other coatings, avoiding maintenance costs.
  13. Environmentally friendly.
  14. Withstands root penetration, when properly reinforced with fibreglass mesh.

Application Instructions

How to video is well worth watching

Important Notice:

Surface preparation:
1. Surface to be coated must be sound. Clean surface to remove all traces of paint, loose particles, dust, grease, mould release compounds, gypsum, efflorescence.

It is the responsibility of the applicator to determine the presence of (salt) efflorescence prior to application. Remove efflorescence using Efflorescence Rid and apply Sealtight Clear to the affected areas to block the salt from penetrating.

Important:   Drizoro Maxseal Flex can only be applied to a wet surface, N0 other primer or other product is required EXCEPT in areas where salt treatment has been carried out.

Apply Drizoro Maxseal Flex flexible waterproofing membrane in these areas while the surface is still wet with Sealtight Clear.*

Repair any damaged concrete defects in advance. Patch all holes, voids and honeycombs. Open cracks to approximately 2 cm. in depths.

Exposed steel bars must be cleaned and patched with Drizoro Maxrest up to 1 cm. minimum thickness. If it is needed, treat steel bars with the oxide converter Drizoro Maxrest Passive (Tdb.o12).

Prior to application of renders, adhesives etc…Recommended to apply scratch/flick coat mixed with latex/acrylic.

Drizoro Maxseal Flex is supplied as two pre-weighed components. Pour the resin, component A, into a clean container and add the powder, component B, gradually, while mixing with a low-speed mixing drill (400 – 600 rpm). Mix until a lump-free homogeneous mixture is achieved. DO NOT add water and keep liquid/powder ratio as per package supplied. Depending on the existing temperature and R.H. climate conditions, pot life expectancy will be between 30 minutes and one hour.


Drizoro Maxseal Flex is applied with a fibre type brush or broom such as MAXBRUSH or MAXBROOM, or by trowel. For large areas Drizoro Maxseal Flex can be sprayed, nozzle size is 3-4 mm and spraying pressure between 3.5 and 5.0 bar. When you spray Maxseal Flex. Drizoro recommends that you finish the first coat using a broom. This ensures that all the voids in the surface are covered completely.


For extreme situations Requiring full 9 bar positive and 4 bar Negative waterproofing Apply two coats, using 1 – 1,5 kg/m2 of Drizoro Maxseal Flex per coat and allow a minimum of 16 hours and a maximum of 3 days between applications. Prior to application thoroughly wash down and saturate the surface, but do not leave free-standing water. Thickness per layer should be 1 mm. approximately, it is very important to avoid very thin or, thick application.
Wet the surface again prior to application of second coat.

[stm-calc id=”30715″]

In those areas such as fissures, concrete joints and active cracks should be sealed using Maxjoint Elastic, once repaired and sealed, Drizoro Maxseal Flex should be applied with a fibreglass mesh of 40-60 g/m2. Place the mesh on the first coat of Drizoro Maxseal Flex, with at least 20 cm wide of the strip, and then wet and apply a second coat of Drizoro Maxseal Flex.

Application Conditions.

Optimum application temperature is between 10 – 25°C.
Do not apply

  • below 5°C or
  • lower temperatures are expected. Within the following 24 hours after application.
  • Frozen surfaces are unsuitable for applications.
  • Rain is expected 24 hours after application.

Protect against quick drying by winds and direct sunlight with high temperatures, by fog – spraying with water for two hours after application.


Curing time required to put the cementitious flexible waterproofing system into service or to immerse it in water will depend on temperature and relative humidity conditions on-site.
Conditions in the range of 20°C and 50% R.H will require a minimum of 14 days to ensure that the product has cured enough to be in permanent contact with water. Applications made at lower temperatures or sites without ventilation will require longer curing periods.
After curing, wash the surface of Drizoro Maxseal Flex cementitious flexible waterproofing membrane system with water before putting into service in permanent contact with potable water.


Clean all tools immediately after use with water. Removal, once cured, is by mechanical methods.


For extreme situations requiring full 9 bar positive and 4 bar Negative waterproofing:
Drizoro Maxseal Flex cementitious flexible waterproofing membrane system is applied in two coats of 1 – 1,5 kg/m2 approximately per coat.
Overall achieving a total consumption of 2 – 3 kg/m2.

All other waterproofing applications.
Where water pressure is not an issue. Neither positive nor negative hydrostatic pressure. Coverage of 20 m2 per Kit (35 Kg) is achievable.


Drizoro Maxseal Flex – flexible waterproofing membrane is supplied in grey and white colour, both available in standard and smooth textures, can be tinted. Pigmented version Maxseal Flex Decor is available in light colours by special request.

Pre-weighed sets of  35 kg(10 kg component A+25 kg component B)

14 kg Handi-pack, includes brush and stirrer (4 kg component A + 10 kg component B)

 7 kg (2 kg component A + 5 kg component B)


Maxseal waterproof coating, cementitious membrane



  • Drizoro Maxseal Flex is a cementitious flexible waterproofing membrane
  • Benefits of Drizoro Maxseal Flex. It must be applied to a damp surface. So no more waiting for the surface to be completely dry. Start your waterproofing project immediately after cleaning.
  • Drizoro Maxjoint Elastic is an elastomeric product with high bond strength suitable for sealing moving cracks and joints in concrete, mortars, blocks and bricks. Apply only to WET surfaces.
Cementitious Flexible Waterproofing Membrane – Advantages and Disadvantages – The …
Information about cementitious flexible waterproofing products and their pros and cons. … One manufacturer has a spray-applied liquid membrane composed of …

Additional information

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1 review for Maxseal Flex

  1. ian man (verified owner)

    Great product easy to use

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