Pondseal Fish Pond Membrane is a water-based
polyurethane/acrylic co-polymer, which when fully cured, forms an impervious,
flexible and aesthetically pleasing waterproofing membrane which enhances the
look of the pond or water feature. It is non-toxic and formulated to be
suitable for use with fish and plants. Being liquid applied, Pondseal conforms
to any shape and provides seamless 'paint-on' pond liner in a variety of
Fish Pond Seal is used for the waterproofing of
ponds, water features, bird baths, fountains, wine barrels for plants and
It is suitable for use on the following sound,
stable and properly primed surfaces:
Cement Rendered concrete, brickwork and blockwork
Water resistant timber (particle board is excluded)
Brick and block work
The 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 the products and related products to vary. For specific
projects a written specification should be sought from the Company.
The structure must be dry to allow the product to
properly cure. If the structure is subject to rising dampness, continual
dampness or negative hydrostatic pressure, the product should not be used.
Benefits and Advantages
It is a versatile membrane suitable for pond
and water feature waterproofing applications.
Suitable for use with fish and plants.
It is a urethane acrylic co-polymer providing a
strong, touch and flexible waterproofing membrane.
Does not re-emulsify after proper curing.
Easy to apply.
Easily recoatable or repairable.
Precautions in Use
The product is considered safe if used correctly as
intended and proper industrial hygiene and practices are used. Always observe
Priming and Preparation
Good preparation is essential. Surfaces must be sound,
stable, dry, clean and free of loose, flaking, friable material,
dust and substances that may diminish adhesion. Surfaces should be
dry, sound, stable, free of gaps, dirt, dust, algae, fungus and
When constructing water retaining structures, 2 ply plastic sheeting
should be laid on the ground prior to the laying of the concrete slab. If
the structure is below ground the plastic sheeting should be turned up between
the walls and the ground. This prevents rising damp and allows the structure to
properly dry, which is essential. The structure should be solid, stable,
gap free and ideally have coved corners.
CRACKS, JOINTS, GAPS AND AROUND PENETRATIONS
These must be filled, sealed and waterproofed with a suitably flexible,
polyurethane joint sealant finishing flush with the surface. The joints must
not move beyond the capability of the membrane. Apply a suitably flexible,
polyurethane joint sealant to all right angled corners and tool off to form a
thick fillet. If walls are constructed of brick or block work the
fillet should extend and cover the first rung of mortar. Allow to cure.
Prime all surfaces with Primeseal MC applied at 3 to 4 sq.m. per litre per coat.
Excessively porous or friable surface should receive at least two priming
coats. Timber surfaces must be primed with at least 2 coats of Primeseal MC
applied at 3 to 4 sq.m. per litre per coat.
Primeseal MC may be applied to slightly damp surfaces but the surface must
become dry in order for the products to dry. Damp surfaces will
increase the drying time and although possible it is not recommended.
When in doubt apply a second coat of Primeseal MC as this will enhance the
waterproof quality of the system.
Allow primers to fully dry before applying Fish Pond Sealer.
Stir well. Apply by brush or roller in coats of
about 500 microns to 750 microns (0.5 to 0.75mm thick).
Apply a minimum of two coats of Fish Pond Sealer. Perform correctly the
dry film thickness of the membrane must be at least 1.2 mm. Each coat must be
fully cured before applying the next.
RIGHT ANGLED CORNERS
Apply about a 750 micron thick and 200m wide coat of Fish
Pond Sealer and embed Polyester reinforcing fabric in to the wet coat.
Apply a similar saturating coat over the fabric , working the wet coat well in
to the fabric ensuring that it is entirely saturated, covered and free of
wrinkles and bubbles. Allow to dry. Apply one or two further coats so
that a thick dry film of membrane covers the fabric. Each coat must be fully
cured before applying the next. Allow the system to fully cure before filling
with water. Prematurely filling can cause bubbling, blistering or
re-emulsification of the membrane. The membrane will not be waterproof until it
has fully cured.
Before filling with fish or plants, hose down the surface, flush the water,
re-fill and treat or age the water as required.
The stated average coverage rate may vary depending upon
type, condition, porosity, texture of the surface and application technique.
Unreinforced: Minimum 1.5 litres per sq.m., i.e 0.75
litres per sq.m. per coat. A 15 litre pail will cover about 10 sq.m. with
2 coats being applied.
Reinforced: Minimum: 2.0 litres per sq.m.
Fish Pond Sealer is available in Midnight blue and
Black (two most popular colours). Special colours are available upon request
but minimum quantities will apply).
Available in 4 and 15 litres pails.
Drying and Curing
Drying and curing of the product is affected by type,
dryness and porosity of the surface, temperature, humidity, ventilation,
climate conditions and application technique. Therefore drying and curing can
only be given as a guide. It is a fast drying water based product.
Expected curing at 25oC at 50% RH:
Touch dry 4 hours per coat
Set 12 hours
Full cure 48 to 168 hours (4 to 7 days).
Protect from rain and inclement weather until fully cured. If product is
damaged by rain prior to curing, drain water, remove uncured or damaged
coating, allow to dry, clean (see preparation), ideally re-prime then re-coat
as described in application.
Cold, damp and high humid conditions will prolong curing.
Store in a cool, dry area. Product is not flammable. Do
not allow to freeze.
Shelf life is 6 to 12 months.
Wet spills can be cleaned with water, but spills should be avoided as they are
difficult to remove from porous surfaces.
Tiling, Topping or Top Coating
Usually not tiled or topped but Fish Pond Sealer is
compatible with most tile adhesives and 3:1 sand:cement beds. Ideally the beds
should be sealed/waterproofed to prevent the bed absorbing and holding water.
Selection of the tile adhesive should be compatible with
the flexibility of the substrate and suitable for immersion in water. Two pack
adhesive systems are preferred. Tiling must be done in accordance with
AS3958.1-1991 and adequate expansions joints installed.
Safety & Precautions
Fish Pond Sealer is user friendly and safe to use if
used correctly as intended. Nevertheless, protect eyes and skin and observe the
safety precautions on the can and data sheet. The use of splash goggles and
rubber gloves is recommended.
We recommend that the coated surfaces be thoroughly
flushed with clean water and drained. Ensure water is suitably aged and treated
before introducing fish or plants.
Tensile Bond: 2N/mm after 14 days
Application temperature range: 10 to 35oC
Moisture Vapour Transmission: 0.26 g/sq.m./24