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Attention: This product is special order only, delivery of product can take an estimated 1 week or more. Please contact us directly for more information.
Use SILCOR® Top Coat 75 for: Long-lasting UV and weather protection on exposed waterproof membranes for rooftops, decks, and balconies.
SILCOR® Top Coat 75 is a two-part, aliphatic polyurethane topcoat engineered for superior protection of SILCOR® membrane systems in exposed applications. With excellent UV resistance, fast cure time, and non-slip properties, it is ideal for surfaces such as balconies, plant room roofs, and deck areas requiring durable, colour-fast finishes. Fire resistant and permanently flexible, it stands up to Australian weather conditions while allowing quick return-to-service for trades.
Key Features of SILCOR® Top Coat 75
- UV resistant for long-term outdoor durability
- Fast curing – walkable within hours for efficient trade access
- Non-slip surface for enhanced safety on decks and roofs
- Fire resistant with UL Class A rating
- Permanently flexible and fully adherent to SILCOR® membranes
- Can be painted or tiled over after sealing
Technical Overview
- Chemical Properties: Aliphatic Polyurethane (2-Part)
- Application Temperature Range: 5°C to 35°C (41°F to 95°F)
- Shore Hardness: 75–80 A
- Tensile Strength: 2 MPa (AS1145)
- Dry Film Thickness: 0.15 mm minimum
- Drying Time: 2 hours at 25°C (77°F)
- Coverage Rate: 0.3 kg/m² minimum
- UV Resistance: Excellent
Trade Professional Information
- Required Tools: High-speed dissolver, stirrer blade, roller, brush
- Trade-Specific Tips: Apply two coats in cross-direction for a uniform finish; use SILCOR® Primer BW Grey for optimal bonding if overcoating
- Common Issues and Solutions: Avoid using product after it becomes stringy—always mix thoroughly and discard old mixes
Storage and Shelf Life
- Storage Requirements: Store in cool, dry, shaded area; avoid direct sun
- Shelf Life Information: 12 months unopened; may solidify within days once opened
- Temperature Considerations: Keep between 5°C to 25°C (41°F to 77°F)
Certifications
- UL Class A Fire Resistance
- Complies with AS1145 Tensile Standards
- UV Stability Proven for Harsh Australian Conditions
Frequently Asked Questions About SILCOR® Top Coat 75
Q: How should SILCOR® Top Coat 75 be applied?
A: Mix both components thoroughly using a high-speed dissolver for 5 minutes. Apply two coats with a brush or roller, ensuring the second coat is applied at a right angle to the first for a uniform finish. Spray application is also possible using wet-on-wet technique.
Q: How fast does the product cure?
A: SILCOR® Top Coat 75 cures in just 2 hours at 25°C, making it suitable for quick return-to-service. It provides immediate resistance to rain damage, minimising delays for follow-on trades.
Q: Is SILCOR® Top Coat 75 compatible with other coatings or finishes?
A: Yes, the coating can be painted or tiled over, but should be sealed with SILCOR® Primer BW Grey or EPOCOTE F100W Grey beforehand to ensure strong adhesion and lasting finish.
Q: What if the product thickens during application?
A: Once SILCOR® Top Coat 75 becomes thick or stringy, it should be discarded immediately. Avoid using solvent additives to extend pot life — always mix fresh batches as needed.
Q: What are the safety considerations for this product?
A: Always wear gloves, goggles, and protective clothing. Work in a well-ventilated space and avoid inhaling vapours. Clean tools before curing using xylene or methylated spirits. Refer to the SDS for full safety instructions.
Use SILCOR® Top Coat 75 for:
- Plant room and lift motor room roofs – UV and foot traffic resistance
- Balconies and exposed decks – non-slip protective finish
- Perimeter turn-ups and penetrations – seamless waterproofing continuity
- Sill and window flashings – colour-fast waterproof detailing
Why Use SILCOR® Top Coat 75:
- Provides durable UV-stable protection for exposed waterproofing
- Enables fast project turnaround with quick curing time
- Improves jobsite safety with a non-slip finish
- Compatible with overcoating and tiling for versatile finishing
How to apply SILCOR® Top Coat 75:
- Ensure the SILCOR® membrane surface is clean, dry, and free of contaminants.
- Mix the resin and hardener separately, then combine in a clean container (5:1 by weight).
- Mix thoroughly using a high-speed dissolver for 5 minutes.
- Apply the first coat by brush or roller. Allow to cure.
- Apply the second coat perpendicular to the first coat to ensure even coverage.
- For spray application, use a single wet-on-wet coat. Do not add solvents.
SILCOR® Top Coat 75 limitations:
- Not suitable for application in wet or damp conditions
- Should not be mixed with solvents – use as supplied only
- Mixed product must be used before it begins to thicken
- Once opened, unused material may solidify within days
Safety precautions when using SILCOR® Top Coat 75:
- Personal Protective Equipment: Gloves, goggles, protective clothing
- Ventilation: Ensure good airflow or use mechanical ventilation when indoors
- Handling: Avoid skin contact and inhalation of vapours; clean spills promptly with solvent
- Always refer to the SDS and follow workplace health and safety guidelines
Silcor Top Coat 75 can be used on the following substrates:
- Silcor waterproof membranes
- Plant room roofs
- Lift motor room roofs
- Balconies
- Decks
- Perimeter turn-ups
- Penetrations
- Sill or window flashings
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