For exposed external areas where an underlying waterproofing membrane requires protection from sun and foot traffic, Silcor Top Coat 80 Waterproof Membrane provides a tough, colour-fast, aliphatic polyurethane finish. It is formulated to protect SILCOR 580, SILCOR 780 HI-LP, SILCOR 790 HI (CHEMSPRAY 790), and SILCOR 990 MP (A) (CHEMSPRAY 690) membrane systems in high-exposure zones including balconies, decks, plant room roofs, and lift motor room roofs.
Silcor Top Coat 80 Waterproof Membrane seals exposed external waterproofing systems against UV degradation and physical wear. The aliphatic polyurethane chemistry ensures long-term colour-fast performance on highly visible details such as perimeter turn-ups, penetrations, and window or sill flashings. Once applied, the coating develops immediate resistance to rain damage, preventing wash-offs on unstable weather days. It cures to a permanently flexible, non-slip finish with high adhesion to the underlying SILCOR membrane, maintaining system integrity under foot traffic without cracking or peeling.
This protective coating is suitable for all grades of SILCOR waterproof membranes used in exposed external situations, specifically:
To ensure proper curing and performance, installers must follow the specific mixing and application steps:
SILCOR Top Coat 80 is a UV-resistant protective coating for exposed SILCOR waterproof membrane systems. It provides a durable, non-slip, colour-fast finish on roofs, balconies, decks, plant rooms, flashings and other exposed waterproofing details.
It is designed for use over SILCOR 580, SILCOR 780 HI-LP, SILCOR 790 HI and SILCOR 990 MP waterproof membrane systems. Compatibility with other membrane brands is not stated in the product data sheet.
Yes. It is specifically designed for exposed external areas including balconies, decks, plant room roofs, lift motor room roofs, perimeter turn-ups, penetrations and window or sill flashings where UV resistance is required.
Mix the resin and hardener at a 5:1 ratio by weight after stirring each component separately. Apply two coats by brush or roller, with the second coat applied across the first, or use a single wet-on-wet spray application. Do not add solvent.
The recommended application rate is a minimum of 0.3 kg/m² of mixed product. This provides a minimum dry film thickness of 0.15 mm.
At 25°C, the coating has a typical drying time of approximately 2 hours. Actual drying time may vary depending on site conditions.
No. The product data sheet specifically states that solvent must not be added. Discard the mixed material once it becomes thick or stringy.
| Use | Benefit |
|---|---|
| Exposed waterproof membrane roofs | Provides a UV-resistant protective coating that helps maintain the performance and appearance of compatible SILCOR membrane systems. |
| Balconies and decks | Creates a durable, non-slip finish that is suitable for service foot traffic. |
| Plant rooms and lift motor room roofs | Protects exposed waterproofing in maintenance areas while allowing quick return to service with a fast curing finish. |
| Perimeter turn-ups and penetrations | Adds colour-fast UV protection to exposed membrane details that receive constant weather exposure. |
| Window and sill flashings | Protects exposed flashing membranes from UV degradation while providing a consistent finished appearance. |
| External exposed SILCOR membrane systems | Compatible with SILCOR 580, SILCOR 780 HI-LP, SILCOR 790 HI and SILCOR 990 MP as the protective finishing coat. |
| Projects requiring fast sequencing | Dries in approximately 2 hours at 25°C and provides immediate resistance to rain damage, helping reduce delays between trades. |
SILCOR Top Coat 80 is designed as the protective finishing coat for compatible SILCOR waterproof membrane systems used in exposed external environments, including:
Suitable for use over SILCOR 580, SILCOR 780 HI-LP, SILCOR 790 HI and SILCOR 990 MP waterproof membrane systems.
Read the product label and Safety Data Sheet for each system component before use and follow the precautionary statements.
Review the Safety Data Sheet before use. The supplied product data sheet does not provide specific ventilation wording.
Store sealed pails in a cool, dry, protected area away from weather and sun. Sealed pails have a 12-month shelf life. Once opened, the product may solidify within a few days.
SILCOR Top Coat 80 is designed for application over cured SILCOR waterproof membrane systems in exposed external areas.
The membrane surface must be clean and dry before application. Compatibility with other waterproof membrane systems is not stated in the product data sheet.
| Property | Value |
|---|---|
| Product Type | Two-part UV-resistant protective coating |
| Chemistry | Aliphatic polyurethane |
| System Compatibility | SILCOR 580, SILCOR 780 HI-LP, SILCOR 790 HI, SILCOR 990 MP |
| Finish | Non-slip, service foot-trafficable |
| Colours | Grey, Light Grey, White |
| Mix Ratio | 5:1 resin to hardener by weight |
| Mixing Time | 5 minutes |
| Application Method | Brush, roller, spray |
| Coats | Two coats by brush or roller, single wet-on-wet application by spray |
| Drying Time at 25°C | 2 hours |
| Shore Hardness | 75-80°A |
| Tensile Strength | 2 MPa, AS1145 |
| UV Resistance | Excellent |
| Coverage | Minimum 0.3 kg/m² mixed product |
| Dry Film Thickness | Minimum 0.15 mm |
| Packaging | 15 kg resin pail, 3 kg hardener pail |
| Shelf Life | 12 months in sealed pails when stored cool, dry and protected |
| Clean Up | MULTITEK Xylene or methylated spirits before curing |
Here are some common examples on where Silcor Top Coat 80 Waterproof Membrane used by our customers.
