What substrates can Maxseal Foundation be applied to?

Maxseal Foundation bonds to concrete, brick, and concrete block masonry. Ideal for foundation walls, retaining walls, basements, and below-grade structures exposed to aggressive ground water.

Does it resist negative-side water pressure?

Yes. Maxseal Foundation is rated for both positive and negative hydrostatic pressure - it can be applied to the dry inside of a wall and still resist water pushing through from the outside (a 'tanking' application).

How is Maxseal Foundation mixed and applied?

Pre-wet the substrate. Mix the powder with water to a brushable consistency, then apply by brush, broom, or roller in two crossed coats. Use the Drizoro 150mm Application Brush for best workability.

Can I tile or render over the membrane?

Yes. Once fully cured, Maxseal Foundation accepts cementitious renders and tile adhesives. Allow full cure time per the TDS before overcoating.

Yes. Maxseal Foundation is CE marked with a published Declaration of Performance. Refer to the linked TDS for full standards compliance and test data.

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Drizoro Maxseal Foundation

Name: Drizoro Maxseal Foundation
Brand: Drizoro
SKU: DDRD3
Price: 132.95 AUD
Availability: OutOfStock

$132.95

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Waterproof cement-based coating for below-grade concrete and masonry. Brush or trowel applied, two layers.

Drizoro Maxseal Foundation is a cement-based waterproof coating for exterior underground concrete and masonry. It fills and seals pores, is unaffected by soil salts, and can be applied to wet surfaces. Brush applied in two layers: 1.5 kg/m2 first layer after 8 hours curing, then 1 kg/m2 second layer.

Where to use it

Foundation waterproofing with high phreatic levels
Below-grade leaks in foundations
Exterior underground concrete and masonry
Barrier against capillary humidity in foundation work
Concrete and masonry subject to great pressures and water aggressiveness

Why waterproofers buy it

Cement based with special additives and selected aggregates for waterproofing
Fills and seals pores, becomes incorporated into substrate
Can be applied to wet surfaces without drying first
Unaffected by soil salts
Trowel application option for high-pressure walls (up to 7 kg/m2)

Coverage

25kg bag: first layer 1.5 kg/m2 in one direction, second layer 1 kg/m2 crosswise after 8 hours. High-pressure walls: trowel second layer at approx. 7 kg/m2 with 12kg siliceous sand added per 25kg bag.

Not for

Do not apply below 5°C or if lower temperatures are expected within 24 hours. Do not apply on frozen or icy surfaces. Optimal working temperature 15°C to 20°C. Avoid application if rainfall is expected within 4 to 6 hours.

Applies to wet surfaces with no need to dry them first

Unaffected by soil salts, with high resistance to aggressive waters

Becomes incorporated into the substrate, filling and sealing pores

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Pickup currently unavailable at The Waterproofing Shop

Drizoro Maxseal Foundation

The Waterproofing Shop

Pickup currently unavailable

22/872 Canterbury Road
Roselands NSW 2196
Australia

+61280213517

How to Use

Dampen the surface and brush on a first layer at 1.5 kg/m2 in one direction, then a crosswise second layer at 1 kg/m2 after 8 hoursRemove all oils and remnants from the surface, as well as blooms or plaster
At the joining area between the vertical wall and the foundation slab, cut a 2x3 cm slot and refill it with MAXREST or MAXPLUG
Patch any aggregate nests in the concrete with MAXREST
Cut back concrete scaffolding wires and passing rods and make a superficial patch a minimum of 1cm deep
Pour clear water into a bucket and add MAXSEAL FOUNDATION slowly to a thick creamy paste, using 6.25 to 7.0 litres per 25kg bag
Let the mix rest for 10 to 15 minutes
Mix with a metallic rod and a mixing disk on a drill at low speed for about one minute
Where better adhesion is required, replace one part in three of the mixing water with MAXCRYL
Dampen the surface with clean water
Apply the first layer at 1.5 kg/m2 with a MAXBRUSH type or tampico fibre brush, as a thick continuous and even coating in one direction only, not extended like paint
Allow 8 hours curing
Apply the second layer crosswise at 1 kg/m2
On walls subject to great pressures and water aggressiveness, trowel the second layer at approx. 7 kg/m2, prepared by adding 12kg of siliceous sand to each 25kg bag
In summer conditions spray water 2 hours after application if fast drying is observed
Clean brushes with water after application for further uses

Technical Specifications

Product Classification: Waterproof, cement-base coating for exterior underground concrete and masonry
Chemical Base: Cement based product with special additives and selected aggregates
Mixing Water: 6.25 to 7.0 litres per 25kg bag
Mixing: Add powder to clear water to a thick creamy paste, rest 10 to 15 minutes, then mix on a low speed drill with a mixing disk for about one minute
First Layer: 1.5 kg/m2, applied in one direction
Second Layer: 1 kg/m2 after 8 hours curing, applied crosswise
Walls Under Great Pressure and Aggressive Water: Second layer trowel applied at approx. 7 kg/m2, with 12kg of siliceous sand added per 25kg bag
Adhesion Improver: MAXCRYL at one part MAXCRYL to three parts mixing water
Minimum Application Temperature: Do not apply below 5C or if lower temperatures are expected within the next 24 hours
Optimal Working Temperature: 15C to 20C
Rain Window: Avoid application when rainfall is expected within the next 4 to 6 hours after application
Laboratory Testing: Waterproofing and mechanical resistance tests carried out at Instituto Eduardo Torroja, available upon request
Pack Sizes: 25kg bags and drums
Shelf Life: One year in its original unopened container, dry, covered and protected from frost

Product Files

Technical Data Sheet (TDS) PDF Download

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Technical overview

MAXSEAL FOUNDATION is a cement based waterproof coating for the exterior of underground concrete and masonry. Special additives and selected aggregates give it its waterproofing characteristics, it becomes incorporated into the substrate and fills and seals pores, it can be applied to wet surfaces without drying them first, and it is unaffected by soil salts. It is brush applied in two layers, 1.5 kg/m2 then 1 kg/m2 after 8 hours curing, with a trowelled sand-loaded second layer where walls are subject to great pressures and water aggressiveness. Drizoro states that waterproofing and mechanical resistance tests were carried out at Instituto Eduardo Torroja and are available on request, but publishes no figures in this Technical Bulletin. No accredited test certificate is held and the Technical Bulletin states no AS/NZS 4858 or AS 4654.1 classification.

View full technical data sheet

Key applications

Foundation waterproofing where phreatic levels are high
Below grade leaks in foundations
Waterproofing layer or barrier against humidity by capillarity
Exterior underground concrete and masonry
Concrete and masonry foundation walls subject to great pressures and water aggressiveness
Protection of foundation concrete against aggressive waters

Surface suitability

Concrete foundation walls (all oils and remnants removed, as well as blooms or plaster, aggregate nests patched with MAXREST, dampened with clean water)
Masonry foundation walls (dampened with clean water before the first layer)
Concrete and masonry foundation walls subject to great pressures and water aggressiveness (second layer trowelled on)

Do not apply at temperatures below 5C or if lower temperatures are expected within the next 24 hours after application, and never on frozen or icy surfaces. Optimal working temperature is between 15C and 20C. Avoid application when rainfall is expected within the next 4 to 6 hours. In summer temperatures wet the surface with abundant water and use MAXCRYL in the mix, and if fast drying is observed water can be sprayed 2 hours after application. Do not extend the material like paint - apply a thick layer in one direction only, with the second layer crosswise. Like all cement products MAXSEAL FOUNDATION is an abrasive compound. It is not toxic but do not let it come into contact with the hands, wear rubber gloves, and if it splashes in the eyes rinse well with clean water without rubbing and see a doctor if irritation persists.

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Technical Specifications

Product Classification	Waterproof, cement-base coating for exterior underground concrete and masonry
Chemical Base	Cement based product with special additives and selected aggregates
Mixing Water	6.25 to 7.0 litres per 25kg bag
Mixing	Add powder to clear water to a thick creamy paste, rest 10 to 15 minutes, then mix on a low speed drill with a mixing disk for about one minute
First Layer	1.5 kg/m2, applied in one direction
Second Layer	1 kg/m2 after 8 hours curing, applied crosswise
Walls Under Great Pressure and Aggressive Water	Second layer trowel applied at approx. 7 kg/m2, with 12kg of siliceous sand added per 25kg bag
Adhesion Improver	MAXCRYL at one part MAXCRYL to three parts mixing water
Minimum Application Temperature	Do not apply below 5C or if lower temperatures are expected within the next 24 hours
Optimal Working Temperature	15C to 20C
Rain Window	Avoid application when rainfall is expected within the next 4 to 6 hours after application
Laboratory Testing	Waterproofing and mechanical resistance tests carried out at Instituto Eduardo Torroja, available upon request
Pack Sizes	25kg bags and drums
Shelf Life	One year in its original unopened container, dry, covered and protected from frost

Frequently asked questions

View all FAQs

What substrates can Maxseal Foundation be applied to?

Compatibility
Maxseal Foundation bonds to concrete, brick, and concrete block masonry. Ideal for foundation walls, retaining walls, basements, and below-grade structures exposed to aggressive ground water.
Does it resist negative-side water pressure?

Performance
Yes. Maxseal Foundation is rated for both positive and negative hydrostatic pressure - it can be applied to the dry inside of a wall and still resist water pushing through from the outside (a 'tanking' application).
How is Maxseal Foundation mixed and applied?

Installation
Pre-wet the substrate. Mix the powder with water to a brushable consistency, then apply by brush, broom, or roller in two crossed coats. Use the Drizoro 150mm Application Brush for best workability.
Can I tile or render over the membrane?

Compatibility
Yes. Once fully cured, Maxseal Foundation accepts cementitious renders and tile adhesives. Allow full cure time per the TDS before overcoating.
Is it CE marked?

Compliance
Yes. Maxseal Foundation is CE marked with a published Declaration of Performance. Refer to the linked TDS for full standards compliance and test data.

Why trade professionals choose Drizoro

Drizoro is a Spanish manufacturer of cement based waterproofing and concrete repair products, supplied to the Australian trade through The Waterproofing Shop. The range on this site covers Maxseal Foundation and Maxseal Flex, along with repair mortars, grouts, joint products and mesh, used on concrete and masonry where water has to be held back rather than simply shed. Choosing between the rigid and the flexible grade is the key decision, and it comes down to the substrate, the direction of the water and how much movement the structure is likely to see.

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