GE SCM 3500
GE SCM3500 silicone roof coating is a high performing protective barrier for a variety of architectural surfaces and roofing substrates. Upon cure, SCM3500 forms a durable, breathable and weatherproof barrier that is highly resistant to degradation from UV and natural weathering.
Key Features and Typical Benefits:
- Silicone Durability – Cured silicone rubber exhibits excellent long-term resistance to natural weathering including: extreme temperatures, ultraviolet radiation, rain and snow.
- VOC Compliant – High solids solvent-free formulation and low Volatile Organic Compounds content is well below the current limits of California’s relevant Air Quality Management Districts.
- Ease of Use – Can be applied with common airless equipment, roller or brush.
- Versatile Application – SCM3500 is a single component material that requires no mixing of separate components and can be applied by spray, roller or brush.
- High Build Formulation – Allows for single coat application and hangs on peaks without sagging.
- Storage & Shelf Life – SCM3500 can be stored in unheated warehouses during the cooler months without the risk of freezing. Shelf life is 18 months from date of manufacture when properly stored.
Typical Physical Properties – Supplied
| Property | Value (1) | Test Method |
|---|---|---|
| Solids Content (Volume) | 90 ±2% | ASTM 2697 |
| Solids Content (Weight) | 91 ±2% | ASTM D1644-01 |
| Tack Free Time | 20-30 minutes | ASTM D3960 |
| Skin-Over Time | 10-15 minutes | WPSTM C-560 |
| Viscosity | 15,000 centipoises | ASTM D2196 |
| Tensile Strength | 204 psi (1.41 MPa) | ASTM D2370 |
| Elongation | 542% | ASTM D2370 |
| Durometer Hardness Shore A | 36 | ASTM D2240 |
| VOC | <24 g/L | EPA Method 24 |
| Solar Reflectance (2) | 88% | ASTM C1549 |
| Emittance (2) | 0.90 | ASTM C1371 |
| SRI Value (2) | 111 | ASTM E1980 |
| Permeance | 9.3 perms | ASTM E96 (BW) |
| Tear Resistance | 32 lbf/in. | ASTM D624 |
| Low Temperature Flexibility | Pass | ASTM D522 (B) |
| Resistance to Wind Driven Rain | Pass | TT-C-555B | (1) Typical data are average data and are not to be used as or to develop product specifications. (2) Values derived from testing of SCM3502 (white), weathering test in progress. |