Product Description GE-Enduris
Key Features and Typical Benefits GE Enduris:
Applicable Standards
1. Surface Preparation
Coating Vertical Surfaces
Enduris 3500 silicone roof coating should not be considered for:
- GE Enduris 3500 silicone roof coating is a high performing protective barrier for a variety of architectural surfaces and roofing substrates. Upon cure, Enduris 3500 silicone roof coating forms a durable, breathable and weatherproof roofing membrane that is highly resistant to degradation from UV and natural weathering.
Key Features and Typical Benefits GE Enduris:
- 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 – Enduris 3500 silicone roof coating 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 – Enduris 3500 silicone roof coating 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
Potential Applications GE Enduris:
- For structurally sound roofing applications including over existing coatings, single ply, modified bitumen and BUR, foam, metal and other horizontal and vertical roofing. Perform an adhesion test on each surface type to ensure adhesion.
- GE Enduris* 3500 silicone roof coating
- Enduris 3500 silicone roof coating is available in nominal 5 gallon plastic pails and 55 gallon chimed steel drums. Weights shown below approximately correlate to 50 gallons and 5 gallons per container.
- Refer to Design and Application Guide for surface preparation requirements, design information and detailed application instructions.
- Typical physical property values of Enduris 3500 UltraGlaze structural glazing silicone adhesive as supplied and cured are set forth in the tables below:
| Property | Valua | Test Method | |
| Solids Content Volume | 90 | ASTM D1644-01 | |
| Tack Free Time | 20-30 minutes | ASTM D3960 | |
| Skin-Over Time | 10-15 minutes | WPSTM C-560 | |
| Viscosity | 22,000 centipoises | ASTM D2196 | |
| Tensile Strength | 204 psi (1.41 MPa) | ASTM D2370 | |
| Elongation | 540% | ASTM D2370 | |
| Durometer Hardness Shore A | 36 | ASTM D2240 | |
| VOC | <24 g/L | EPA Method 24 | |
| Permeance | 9.3 perms | ASTM E96 (BW) | |
| Tear Resistance | 32 lbf/in | ASTM D624 | |
| Low Temperature Flexibility | Pass | ASTM D522 (B) | |
| Solar Reflectance – Initial | .85 | ASTM C1549 | |
| Thermal Emittance - Initial | .89 | ASTM C1371 | |
| SRI Value – Initial | 107 | ASTM C1549 | |
| Solar Reflectance – Aged(2) | .76 |
| |
| Thermal Emittance - Aged(2) | .90 | C1371 | |
| SRI Value - Aged(2) | 94 | ASTM E1980 |
- Cool Roof Rating Council (CRRC) – Licensed Seller ID 1200. SCM3502 (white) only. Rated Product ID – 0002.
- UL 790 – Flammability Characteristics – SCM3500 silicone roof coating carries Class “A” Non-Combustible and Class “B” Combustible credentials as tested under UL 790 procedures over spray foam and single ply roofing systems. Refer to the UL directory for specific information.
- ASTM E84 – Standard Test Method for Surface Burning Characteristics of Building Materials. Result: Class A (Flame Spread Index 10, Smoke Developed Index 185).
- Miami Dade NOA – 13-1119.01
- CAL FIRE
- California Title 24 Compliant - Can be used to comply with Title 24 high efficacy requirements.
- FM Global
- Energy Star
- For additional technical resources, please contact your local customer service center. (See Customer Service Centers section herein for contact information.) Any technical advice furnished by MPM or any representative of MPM concerning any use or application of any MPM product is believed to be reliable, but MPM makes no warranty, expressed or implied, of suitability for use in any application for which such advice is furnished.
- Customers must evaluate MPM products and make their own determination as to the fitness of use in their particular applications.
- Nothing contained herein shall be construed to imply the nonexistence of any relevant patents or to constitute the permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of the patent.
- Customers considering the use of this product should review the latest Safety Data Sheet and label for product safety information, handling instructions, personal MPM representative. Use of other materials in conjunction with MPM sealant products (for example, primers) may require additional precautions. Please review and follow the safety information provided by the manufacturer of such other materials
- Enduris 3500 silicone roof coating should be stored in sealed containers in a dry area, out of direct sunlight and high heat. Do not open containers until ready for use and store containers at or below 109°F (43°C) to maintain full shelf life. Enduris 3500 silicone roof coating generally can be stored in unheated warehouses during the cooler months without the risk of freezing.
Enduris 3500 silicone roof coating reacts with atmospheric moisture to cure. Once containers are open and exposed to the atmosphere, a skin will form on the material over time. The formation of skin will be negligible in winter months but can form quickly (minutes) under hot and humid conditions. Cured skin that has formed on the top of the material must be removed or screened from the bulk material, as it may contribute to pump clogging. Take appropriate precautions to cover open containers during use.
1. Surface Preparation
- Enduris 3500 silicone roof coating can be applied to itself as well as a variety of roofing materials and substrates including: single ply membranes (TPO, PVC, EPDM, CSPE, and Hypalon), spray-applied polyurethane foam, metal, concrete, and common parapet/coping materials. Asphaltic substrates such as; modified bitumen, smooth BUR, and granulated cap sheet which may require bleed blocker. Surfaces to which Enduris 3500 silicone roof coating is to be applied must be clean, dry, structurally sound and free of loose particles, dirt, dust, oil, frost, mildew and other contaminants. Damage to the underlying roof system, such as cracks, openings, holes, etc. should be properly repaired prior to application. Saturated substrates must be removed and repaired appropriately. Users of Enduris 3500 silicone roof coating should verify that suitable adhesion can be attained to all existing roofing materials to be coated prior to large scale application of the coating. It is recommended that a test patch be cleaned and coated with Enduris 3500 silicone roof coating to verify the effectiveness of the asphalt bleed cleaning method and adhesion to the surface(s).
- Enduris 3500 silicone roof coating should be applied as received and dilution with solvent is not recommended. If settling in the package has occurred, stir or shake the material prior to use. Care should be taken to avoid overspray onto adjacent building materials, vehicles, plants, etc. Overspray can be cleaned up before it has cured by wiping alternately with solvent and dry rags. Cured material can be removed from surfaces with a razor blade, or scrubbed off with steel wool or synthetic abrasive pads and solvent. To control overspray, avoid spraying in winds that may cause drift. Surfaces not intended for coating should be masked or covered.
Enduris 3500 silicone roof coating should be sprayed or rolled ensuring uniform build and thorough coverage and is typically applied in one coat. If applying in multiple coats, allow adequate time between each coat for the coating to cure before applying additional coat. Final cured film thicknesses must be free of voids, pinholes, cracks or blisters.
- Enduris 3500 silicone roof coating can be applied throughout the year as long as the substrates being coated are completely dry. Frost and/or moisture will interfere with adhesion. Lower temperatures will lengthen the skin over, tack free and ultimate cure time and may require an overnight cure in winter months to allow the top coat application to proceed (film build may not be sufficient to allow walk over). Higher temperatures will accelerate the cure rate and decrease the open time of the coating. Contact manufacturer if applying to substrates over 120°F (49°C).
- Enduris 3500 silicone roof coating can be applied by spraying, rolling or brushing. Enduris 3500 silicone roof coating works with most commercially available spray application equipment that can deliver a minimum of 3,300 psi at the spray tip for at least 2.2 gallons per minute. Always use components rated for the required pump pressure. Hoses should be vapor lock type for prevention of moisture contamination. Contact MPM technical services for equipment recommendations. Cleanup of spray equipment containing uncured material may be accomplished by flushing with mineral spirits or toluene. DO NOT USE water or alcohol based solvents. Enduris 3500 silicone roof coating cures by reacting with moisture, thus it should not be left in pumping equipment and hoses for prolonged periods unless equipment contains moisture lock hoses, fittings and seals. Equipment without moisture lock hoses, fittings and seals may transmit sufficient moisture vapor to gradually form cured material on hose walls and at unsealed connections. This can cause increased operating pressures and flow restriction.
Coating Vertical Surfaces
- When coating vertical wall surfaces, other than parapets and walls associated with the roofing system, GE SEC2400 SilShield* silicone architectural coating is suggested. Contact an MPM representative for additional information.
Enduris 3500 silicone roof coating should not be considered for:
- Use on pedestrian, deck or frequent traffic bearing surfaces.
- Cold storage roofing application without vapor barrier, cryogenic tank applications, or continuous water immersion service.
- Unprepared surfaces including but not limited to those that are wet, dusty, oily, mildewed, heavily chalked, blistered or otherwise structurally unsound.
- Building materials that might bleed oil or solvents. These include, but are not limited to, certain vulcanized rubber products, tapes, failed sealants, some caulking compounds and asphaltic/mastic materials unless appropriate preparation or primers are used. Consult Momentive Performance Materials (MPM) technical services for primer recommendations.
- Surfaces where adhesion has not been verified by testing.
- Inclement weather may negatively affect uncured Enduris 3500 silicone roof coating by displacement of uncured material; therefore, application of coating should not proceed if heavy rain, hail or snowfall is impending or expected within 24 hours of application.
- Enduris 3500 silicone roof coating requires atmospheric moisture for propagation of cure thus it is not suitable for use in totally confined spaces.
