Specification
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.
Limitations
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
PONDSEAL is a versatile membrane suitable for pond and water feature waterproofing applications.
Suitable for use with fish and plants.
Pondseal is a urethane acrylic co-polymer providing a strong, touch and flexible waterproofing membrane.
Does not re-emulsify after proper curing.
Quick curing.
Easy to apply.
Virtually odourless.
UV resistant.
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 safety precautions.
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 other contaminants.
Construction
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.
Priming
Prime all surfaces with Primeseal 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 applied at 3 to 4 sq.m. per litre per coat.
Primeseal 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 as this will enhance the waterproof quality of the system.
Allow primers to fully dry before applying PONDSEAL.
Application
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 Pondeseal.
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 Pondseal and embed Durascrim (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.
FLUSHING
Before filling with fish or plants, hose down the surface, flush the water, re-fill and treat or age the water as required.
Coverage
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 20 litre pail will cover about 13 sq.m. with 2 coats being applied.
Reinforced: Minimum: 2.0 litres per sq.m.
Colours
PONDSEAL is available in blue and black (most popular colours). Special colours are available upon request but minimum quantities will apply).
Available in 1, 4 and 20 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.
PONDSEAL 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.
Storage
Store in a cool, dry area. Product is not flammable. Do not allow to freeze.
Shelf life is 6 to 12 months.
Clean Up
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 PONDSEAL 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
PONDSEAL 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.
For full safety data refer to the product's Material Safety Data Sheet. Observe precautions as per label.
Tests and Technical Data
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 35*C
Moisture Vapour Transmission: 0.26 g/sq.m./24 hours
