International Fireproof Technologies

DC315 Thermal Barrier Paint for Spray Foam (SPF) - 5 gallons

SKU:
DC315-5G
Availability:
Usually Ships in 1 to 2 Days
  • DC315 Fire Retardant Paint for Spray Foam Insulation
  • Color samples
$375.00 - $395.00
Frequently bought together:

Description

What is this Spray Foam Insulation Fire Barrier?

This fire barrier spray foam is an intumescent coating applied over Spray Polyurethane Foam (SPF) to achieve a “15 Minute Alternative to Thermal Barrier” and “5 Minute Ignition Barrier.” This 5 gallon spray foam insulation is compliant to IBC & IRC codes; 3rd party inspected and listed by Warnock Hersey ( WN-20947), and meets the requirements of the AC456 criteria recently updated in AC377. DC315 has more than 200 tests worldwide over a wide variety of foams. It has one of the best coverage rates for foam at 115 sq ft/gallon, making it very cost efficient. Also available in 55 gallon drums.

Data sheet and application guide
 

Key Benefits of DC315 Coating

  • Coverage rate averages between 73-115 sq ft per gallon, depending on foam manufacturer. Call us for exact numbers.
  • DC 315 is AC456 compliant
  • More full scale Thermal and Ignition Barrier tests than any other product in the world
  • DC 315 - 3rd. party inspected for Quality Control: Warnock Hersey Intertek W/N 20947
  • Tested useful life, fire resistant property is not compromised after 50 years
  • Top coat for color, weather & moisture protection, tested, via NFPA 286 full scale testing
  • ANSI 51 testing for incidental food contact
  • Passed CAL 1350 - qualify DC 315 as a low-emitting material in the Collaborative for High Performance Schools rating system (CHPS Designed & CHPS Verified)
  • Passed strict EPA  V.O.C. and AQMD air emission requirements (for all 50 states)
  • 3rd Party tested Single Coat Coverage up to 24 Mils WFT, on ceilings and walls, reducing labor costs equaling higher profits
  • Meets Life Safety Code 101
  • Meets LEED point requirements
  • No formaldehyde

Prior to Applying DC 315 to Ensure Proper Adhesion

Adhesion of a coating to SPF requires the foam surface to have a slight profile or texture similar to an orange peel (view below). Smooth or glossy foam surfaces should be flash coated with a light 3 - 4 mils Wet Film Thickness (WFT) of DC 315 before applying the full application. Flash coating is a quick burst of DC 315 or a primer via airless sprayer over an area needing treatment. We also recommend flash coating around all pipes and air ducts.
Wait minimum of one hour after spraying SPF before applying DC 315.

Coverage & Yield

DC315 coverage rate ranges from approximately 73 to 115 square feet per gallon, depending on the required wet film thickness and surface conditions. A 5-gallon pail can cover up to 400 square feet, helping reduce material waste while improving efficiency and overall project cost control.

Surface Preparation

 
All surfaces to be coated must be clean, cured, firm, dry and free of dust, dirt, oil, wax, grease, mildew, and efflorescence. The quality of any application is only as good as the surface preparation that precedes the application. Our coating has excellent bonding characteristics and will adhere to most sound, clean, foam surfaces. Verify that the surface of the foam is free of gouges, holes, and exposed cells. Also verify the surface is stable, and not crumbling or deteriorated. If any such defects are found make sure to repair them prior to proceeding.
 

Material Preparation

 
This spray on thermal barrier must be thoroughly mixed before application. Failure to do so will seriously compromise the coating's ability to perform. It is recommended to perform mechanical stirring with a high speed drill and a paddle appropriate for the size container you are working from. Contents should be stirred from the bottom up making sure to scrape the bottom and sides with a paint stick as you go. Contents should be stirred to a creamy consistency with no lumps. Continue mixing for 4-5 minutes per 5 gallon pail. Thinning is usually not needed. If DC 315 has been exposed to high heat, water may evaporate from the plastic 5 gallon container. If the paint level is below 3 inches from the top of the container, add enough water to bring the level back up to within 3 inches from the top in order to ensure proper consistency.
 

DC 315 Viscosity

 
DC 315 is a 9,000-10,000 viscosity coating. When you open a container of DC 315 it may appear thick before it is mixed, but once remixed for 5 minutes it will return to 9000-10,000 viscosity.
 

Available Colors

DC315 spray foam fire barrier coating is available in a range of colors to suit different project requirements while maintaining consistent fire protection performance and finish quality.

  • Ice Grey (standard): Most commonly available and ready to ship
  • White (special order): Ideal for brighter interior applications
  • Dark Grey (special order): Suitable for industrial or utility spaces

Color options can also support aesthetic preferences when the coating is left exposed in approved interior environments.

Application Equipment

 
This 5 gallon spray foam insulation is best applied with an airless sprayer to achieve a more consistent mil thickness. In challenging areas where an airless sprayer is not practical, DC 315 can be applied by brush or roller Spraying DC 315 for Maximum Yield: If this is the first time using DC 315 we suggest testing a pre-measured area to get a feel for spraying and yield. Example, if the job requires 20 wet mils or 80 sq. ft. per gallon, then a 5 gallon pail would cover 400 sq. ft. Measure out one or two 400 sq. ft. sections using pieces of tape, thumbtacks, or canned spray paint. Use just enough to outline the area you intend to apply DC 315. We suggest spraying inside the outlined area and taking wet film thickness measurements, with a wet film gauge across the area, to get a feel for maximum yield.

Why Choose DC315 Over Other Thermal Barrier Coatings?

DC315 stands out for its proven performance, extensive testing, and cost efficiency, making it a reliable solution for fire protection over spray foam insulation in a wide range of compliant building applications.

  • More certified full-scale fire tests than most competing coatings
  • High coverage rates that reduce material and labor costs
  • Long-lasting performance with fire resistance maintained over decades

Frequently Asked Questions

How thick should DC315 be applied?

DC315 intumescent coating for SPF is typically applied at a thickness of 4–24 wet mils, depending on code requirements and test reports. Always verify the specified thickness based on the approved assembly and application guidelines.

Can DC315 be left exposed?

Yes, DC315 intumescent coating for SPF can be left exposed in approved interior applications when installed per code requirements. It also serves as a protective top coat for moisture, color, and durability.

Is DC315 waterproof?

DC315 intumescent coating for SPF provides moisture resistance and surface protection but is not classified as a fully waterproof system. It is designed primarily for interior fire protection applications over spray foam insulation.

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