a two part waterproofing membrane comprising of a liquid component of
selected polymers and a powder component of selected cements, fillers
and aggregates. When mixed together to form a brushable or rollable
slurry it provides a strong, hydrostatic pressure resistant, flexible
waterproofing membrane with particular application in immersed or
Crystoflex complies with AS/NZS 4020:2002 Testing of Products For
Use In Contact With Drinking Water - Australian Water Quality Centre
Report Number 4007/92.1595
for many waterproofing applications, and is particularly useful for
areas requiring hydrostatic pressure resistance and immersed
applications including water retaining structures such as concrete
tanks, ponds, pools, fountains and water features. Crystoflex is
suitable for contact with drinking water.
Crystoflex is also suitable for use on:
Roofs (if top coated with Azcoflex)
is suitable for use on the following correctly prepared and primed surfaces:
Filled block work (filling should be vibrated to ensure the absence of voids)
Brick or rendered brick
information contained in this data sheet is general in nature and refers
only to the usual use of the product and it should not be construed to
be a complete specification. Site conditions vary which may require the
use of other products . For specific projects a written specification
should be sought.
and can withstand normal building movement but it has limited elongation
and hence will not tolerate excessive movement or cracking of the
substrate. Cracks and gaps must be independently sealed and
Benefits and Advantages
Suitable for contact with drinking water.
Designed hydrostatic pressure resistance.
Suitable for immersion in water.
Can be applied to damp surfaces.
Can be topped, tiled or coated.
Suitable for use in confined areas.
Compatible with most tile adhesives.
The product is considered low risk if used properly as intended.
Observe safety precautions on packaging and MSDS.
Powder contains cement and until fully wet then inhalation should be avoided. Wear suitable mask.
The use of rubber gloves and eye protection is recommended.
Priming and Preparation
preparation is essential. Surfaces must be sound, stable, dry, clean and
free of dust, loose, flaking, friable material and substances that may
Exposed steel must be treated for rust and coated with suitable
anti-corrosive and anti-rust treatments (as for concrete spalling).
Concrete surfaces that are rough, pitted, contain blow-holes and
honey-combed areas must be suitably filled with high tensile strength,
non-shrink mortar and allowed to fully cure.
Cracks, gaps and holes must be properly treated and filled. Block
work, which should have been properly filled with concrete and vibrated
to ensure that no voids are present within the block work, must be
properly pointed up.
The surface should be primed. The preferred primer is Primeseal
applied at 3 to 4 sq.m. per litre and allowed to dry. Undiluted
liquid may be used as a primer applied at 3 to 4 sq.m. per litre and allowed to dry.
Timber roofs must be primed with Primeseal.
Primers may be applied to slightly damp surfaces (but free from
ponded or running water) and the surface must become dry to allow the
product to dry but this is not recommended as curing will be prolonged.
Excessively porous surfaces may require an additional coat of primer.
To small ponds, tanks, fountains, roofs and wet areas, apply a
suitable elastomeric polyurethane joint sealant to all corners to forms a
strong fillet and to bases of penetrations and around waste outlets.
To corners of large tanks a high tensile strength, non-shrink
mortar should be applied to form a fillet thereby eliminating 90 degree
Mixing should be done with a mechanical stirrer. Hand mixing is not sufficient.
Whilst stirring, the powder should be slowly added to the
liquid. Stir until the mixture is smooth, lump-free and homogenous. The
product's viscosity should be suitable for horizontal and vertical
surfaces but the thickness can be increased by the addition of no more
than 3% of Portland cement by weight.
If mixture sets before use, do not try to reconstitute by adding water or more liquid. This product should be discarded.
Application is usually by brush and roller but can be squeegeed,
trowelled or sprayed. The final dry film thickness should be at least
1.5mm to 3mm depending on whether the waterproofing is applied in 2 or 3
coats. Allow previous coat to fully cure/dry before applying the next.
In confined areas such as tanks, the humidity in the tank may inhibit
proper curing and artificial ventilation (preferably warm air) should be
blown into the tank.
Small ponds, fountains, retaining walls, wet areas (follow
procedure as stated in AS3740), roofs and concrete slabs: Apply two
coats at 0.8 litre per sq.m.per coat, i.e. 1.6 litres per sq.m.
Tanks: Apply a minimum of three coats at the rate of 1.0 litres
per square metre per coat, i.e. 3 litres per sq.m. combined so that the
dry film thickness is at least 2mm.
Swimming pools: Apply a minimum of three coats at the rate of 1.0
litres per square metre per coat, i.e. 3 litres per sq.m. combined so
that the dry film thickness is at least 2mm. The membrane should be
suitably rendered with a suitable bonding agent incorporated in the
render then tiled with a tile adhesive designed for immersion.
average coverage rate may vary depending upon type, condition, porosity,
texture of the surface and application technique.
Crystoflex: 1 kg (0.8 litres) per sq.m. per coat.
Primers: 3 to 4 sq.m. per litre per coat.
Crystoflex is untinted and is greyish in colour.
Product should be stored in cool, dry area.
Do not use if bag is damaged.
If wet, ensure that run off does not enter the drains.
Cured product should be shovelled into suitable containers and disposed of in accordance with local council regulations.
Safety & Precautions
Do not inhale powder while mixing.
The use of a suitable mask and protective clothing including goggles is recommended.
For full safety data refer to the products Material Safety Data Sheet. Observe precautions as per label