DC315

DC315 is an intumescent coating compatible with SOPRA-SPF sprayed polyurethane foam.

UNITS PER SKID: 36

DC315 is a single-component, water-based intumescent fire protective coating specifically designed for use over spray polyurethane foam (SPF) insulation. It serves as an alternative thermal and ignition barrier, meeting stringent fire safety codes and standards in the United States, Canada, the European Union, Australia, and New Zealand. DC315 is used to protect SPF in both residential and commercial buildings, including interior conditioned spaces, cold storage facilities, parking garages, and agricultural buildings.

DC315 is typically used as a standalone fire protective coating over cured SPF insulation. In Canada, a primer is required prior to application (refer to CCMC #14036-R). For smooth or glossy SPF surfaces, a flash coat of 3–4 wet mils of DC315 or a compatible primer is recommended to ensure proper adhesion. While topcoats are not required for fire protection compliance, they may be applied for additional color, weather, or moisture protection, especially in unconditioned or high-humidity environments.

DC315 is applied over open-cell and closed-cell spray polyurethane foam to meet fire safety requirements as an ignition or thermal barrier. It is suitable for use in attics, crawl spaces, wall cavities, ceilings, and other interior spaces where SPF is exposed. It has also been tested and approved for use in exterior wall assemblies in accordance with NFPA 285, making it suitable for use behind various architectural claddings. DC315 is compliant with IBC Section 2603.9 and IRC Section R316.6, and meets the requirements of CAN/ULC S101 and ASTM E119 for up to a 60-minute fire resistance rating.

Application Details:

DC315 must be applied to clean, dry, and properly cured SPF surfaces with a slight texture (orange peel finish). Smooth or glossy foam surfaces require a flash coat or primer. The coating is best applied using an airless sprayer with a minimum output of 1.0 GPM at 3000 PSI and a tip size of 0.517–0.525. Brush or roller application is acceptable for small or hard-to-reach areas. The maximum wet film thickness (WFT) per coat is 24 mils. If more thickness is required, multiple coats must be applied with a minimum 4-hour drying time between coats.

Recommended application thicknesses and coverage rates are as follows:

- 4 mils WFT: 400 ft²/gal

- 14 mils WFT: 115 ft²/gal

- 24 mils WFT: 67 ft²/gal

- 34 mils WFT: 47 ft²/gal

Wet film thickness should be verified using a WFT gauge or medallions placed on the surface. For accurate fire protection, it is critical to meet the specified minimum thickness and coverage rates.

- Pot Life: Not applicable (single-component, water-based)

- Dry Time at 77°F and 50% RH: To touch in 1–2 hours; recoat in 4–8 hours

- Full Cure Time: Varies with humidity and temperature; ensure proper ventilation for 48–72 hours post-application

- Application Temperature Range: 62°F to 90°F (Do not apply below 50°F)

- Storage Temperature: 50°F to 80°F (Protect from freezing)

- Humidity Limits: Ideal 50–65% RH; do not exceed 70% during application and curing

- UV Stability: Not UV stable; topcoat recommended for UV exposure

- VOC Content: 10.3 g/L (TVOC), 18.6 g/L (VOC less water)

- Volume Solids: 67%

- Finish: Flat

- Colors: Ice Gray, White, Charcoal Black

- Packaging: 5-gallon pails (58 lbs), 55-gallon drums (640 lbs)

- Shelf Life: 18–24 months unopened

- Flash Point: None (water-based)

- Clean-up: Water

Limitations:

DC315 is intended for interior use as a fire protective coating over SPF. While it can be used in unconditioned spaces such as cold storage or agricultural buildings, additional environmental considerations must be addressed. It is not UV stable and should be topcoated if exposed to sunlight. The coating must not be applied in freezing conditions or when ambient/substrate temperatures are below 50°F. High humidity can significantly delay curing and must be controlled with proper ventilation and dehumidification. Improper installation practices, including failure to monitor temperature and humidity, may compromise the coating’s performance.

System Compatibility:

DC315 is compatible with all major brands of open-cell and closed-cell SPF. In Canada, a primer is mandatory before application. For all installations, ensure the SPF is fully cured and cooled to ambient temperature (minimum 1 hour) before applying DC315. Topcoats may be used for aesthetic or environmental protection but are not required for fire compliance.

Certifications and Testing:

DC315 has been tested and certified to meet or exceed the following standards:

- ASTM E84, E119, E2768, E661

- NFPA 286, NFPA 285

- CAN/ULC S101, S102, S124, S145, 9705

- EN 13501-1 (EU Classification B-S2-d0)

- AS/NZS 1530.3, AS 5637.1 (Group 2 Classification)

- ISO 5660 (Group 1 Classification)

- ANSI 51 (Incidental food contact)

- CA-1350 (Low-emitting material for LEED)

- EPA VOC and AQMD compliant

- RoHS compliant

- Life Safety Code NFPA 101

DC315 is the most tested and approved intumescent coating for SPF on the market, offering unmatched versatility and code compliance across multiple jurisdictions.

https://www.soprema.ca/en/products-systems/dc315