Drizoro Waterproofing Membrane for Sewers

Waterproofing membranes for sewers perspective, the waterproofing of sewer tanks Drizoro recommends Drizoro Maxseal Flex which excellent crack bridging.
Drizoro Maxseal Flex – A “Technically Superior multifunction product” that can be applied to

  1. “MOST” surfaces.
  2. Internal and external use.
  3. Below and above ground for negative and positive pressure.
  4. “NOT” needing a separate primer, finish coating for protection.
  5. “green” concrete the benefit of this type of application is that it will slow down curing, reducing shrinkage cracking

Drizoro Waterproofing Membranes for Sewers, Drizoro Maxseal Flex flexible waterproofing membrane coatingDrizoro Maxseal Flex is typically used for waterproofing

  • Concrete Slabs, below and above ground:
  • Roof, gutters, balconies,
  • under tiles or exposed,
  • can be applied to “green” concrete, will slow down curing, reducing shrinkage cracking
  • excellent crack bridging up to 3 mm and capable of thermal movement up to 4 mm. 
  • On internal concrete under tile, carpet, timber/parquetry, to reduce moisture damage.
  • Sealing water ingress to up to 40 metres of negative, 90 metres positive head pressure.
  • Water Containment: Swimming Pools (salt and chlorine), ballast tanks, water tanks, reservoirs, water features, water and sewer treatment, water and sewer infrastructure.  AS/ NZ 4020 approved.

We Recommend that Drizoro Maxseal Flex be reinforced with Drizoro Maxmesh – fibreglass reinforcing mesh (woven fibreglass mesh) to cover cracks up to 3mm.
Where cracks are moving and or greater than 3 mm it is recommended that Drizoro Maxjoint Elastic be used and this can be used up to 30 mm cracks.

Advantages and Benefits of Maxjoint Elastic

1.     Allows movement capability of joint up to 15%.

2.     Very high weather resistance and durability. No maintenance required.

3.     Excellent adhesion on damp surfaces. No bonding agent needed.

4.     Non-slump on vertical joints.

5.     Suitable for joints in permanent contact with water, water treatment plants

6.     Easy to apply and finish.

7.     Non-toxic and non-flammable, environmentally friendly.

8.     Can be painted once cured with the desired colour

Drizoro Maxjoint Elastic  consumption requirements

cementitious waterproofing membranes for sewers, sewerage holding tanks
Drizoro Maxrite 700 for Restoration of Sewer Tanks 

Damage to the concrete surfaces walls or floors of sewer tanks that need restoring, joining any of the non-moving cracks we recommend Drizoro Maxrite 700 for the restoration of any areas.
In older sewer tanks where the cracks have resulted from the weakening or erosion of the concrete’s original structural strength. There is excessive flexing or movement as the level of sewerage in the sewer tanks rises & falls causes this cracks to widen and narrow. As a result of this destruction (weakening) the sewer tanks walls extra steel reinforcing is to be installed over these cracked areas (as specified by an engineer) and Maxrite applied at sufficient thickness to strengthen the wall to the original specification or exceed it.

Advantages and Benefits of using Drizoro Maxrite 700 as part of the system of waterproofing membranes for sewers

1.     Corrosion inhibitors prevent corrosion against chlorides and aggressive corroding agents, extending considerably the service life of the structure.

2.     Long Pot life of mix allows the quick completion of the repair of large areas.

3.     Good chemical resistance in aggressive environmental ambient due to its microsilica content.

4.     Waterproof.sewer tanks, drizoro-maxrite-700-with-corrosion-inhibitor-fibre-reinforced-cementitious-mortar-repairs-concrete-cancer

5.     Offers high resistance to carbonation penetration.

6.     High adhesion to concrete and reinforcements.

7.     Does not require special primers.

8.     The transmitted loads onto the repaired structure.

9.     High impact and mechanical strength.

10.  Long-lasting repairs.

11.  Good thixotropy means there is no need for formwork, successive layers without slump.

12.  Allows high thickness per layer.

13.  Easy workability and application. Repair to damaged concrete can be completed by spray with the use of the wet-method.

14.  Single component mortar. Only requires water for mixing and it is odourless,

15.  Suitable for poorly ventilated areas such as sewerage holding tanks.


CONSUMPTION:- Estimated consumption of Drizoro Maxrite 700 is approximately 1.85 kg/m2 per mm. thickness.

One 25 Kg bag of Drizoro Maxrite 700fills approximately 13.75 litres  Fills 0.54 litre/ kg of Maxrite.




Pack size

RRP per pack

Coverage and cost in use @RRP (not including GST)

Flexible Cement-based waterproofing- positive & negative Drizoro Maxseal Flex 35kg $336.00 20m2 per 35kg two coats completed, $16.80 per m2
Cement-based Elastomeric product for joint sealing – positive & negative Drizoro Maxjoint Elastic   2kg




250g per lineal meter joint (20mmx10mm),

$7.10 per lineal metre of joint

The meshing of cold joints between slab & Dincel Drizoro Maxmesh – 200mm  wide fibre glass reinforcing mesh 200mm x 50m $83.50  $1.67 per lineal meter.
Fibre Reinforced structural repair mortar – waterproof -long pot life Drizoro Maxrite 700– fibred + corrosion inhibitor + waterproof 25 kg  $140.50  $5.00 approximately 1.85 kg/m2 per mm. thickness
Are ideal for the application of Drizoro Construction Products Drizoro Brush Each $20.47
Mixer Drizoro Small Mixer Each $15.00

*Prices were correct at time of writing but may have been changed from time to time

Drizoro Products are an “easy sell” as they are multifunctional and cost-effective.

Most of our clients in the construction industry would welcome our input as to the availability of a single, time-proven, “Technically “superior, cost-effective solution to their “multiple” waterproofing problems.


When using Drizoro cementitious waterproofing membranes for sewers longevity of a sewerage holding tank is increased.


Alternative cementitious waterproofing membranes for sewers would be both Maxseal Flex Express or Drizoro Maxseal Flex – M.

The main alternative Concrete Repair Mortars for repairing structural areas would be Drizoro Maxrest– restoration-repair

More details on Concrete Crack Repair – flexing expansion joints

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