
Leave Them High and Dry
RHOPLEX™ EC-3000, a 100-percent acrylic polymer for use in elastomeric roof coatings, provides excellent protection and resistance to rain. This fast-setting technology provides resistance to rain in as little as 20 minutes, even in high humidity and on overcast days. RHOPLEX™ EC-3000 further increases productivity by extending the application season for contractors, as coatings formulated with this technology can be applied in cooler temperatures.
Plus, this technology works in existing coatings formulations as a replacement for other well-known polymers such as RHOPLEX™ EC-1791, so there's no need to develop a new formulation to use it. Looking to add more value to your roof coatings? Start here.
Product Features
When properly formulated and applied, elastomeric roof coatings based on RHOPLEX™ EC-3000 polymer offer these features:
- Resistance to moisture in as little as 20 minutes of drying time – even in lower temperatures, high humidity and overcast conditions
- Protective barrier to ultraviolet light, which helps prevent rapid degradation of underlying roof materials
- Significantly lower roof surface temperatures which can help reduce the cooling load on the building and the Urban Heat Island.
- <50 g/liter VOC (volatile organic compounds)
- Excellent flexibility at temperatures as low as -15°F (-26ºC)
- Advanced adhesion to various roofing substrates
- Excellent dirt pick-up resistance
- User-friendly; only soap and water are needed for clean-up
Typical Applications
Roof coatings based on RHOPLEX™ EC-3000 can be brush, roller, or spray-applied. Coatings based on RHOPLEX™ EC-3000 are an ideal choice for a wide variety of substrates, including:
- Polyurethane foam
- Metal
- Concrete
- Aged asphalt surfaces
| Typical Physical Properties The following are typical physical properties of RHOPLEX™ EC-3000 polymer, but should not be regarded as sales specifications: |
|
| Appearance | Milky white liquid |
| % Solids, by weight | 55% (+ 0.5) |
| pH (as packed) | 10.25 (+ 0.25) |
| Specific Gravity | 1.03 |
| Density (lb./US Gal.) | 8.65 |
| Tg, onset (DSC) | -40°C |
| Storage Stability | Unchanged at 30 60°C |
| Viscosity, cps (Brookfield) | 50-400 |
| Storage Precautions | Protect from freezing |
At Dow Construction Chemicals, our material science expertise and decades of experience in the construction market can help our customers develop just the right formulation to differentiate their products and meet their customers' needs.

