FireWall™ Ceramic Thermal Coating

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How Much FireWall Do I Need?

Vehicle Class

Call us to discuss your project. 1-800-679-8511

Vehicle Coverage

Estimated Square Footage

0Sq Ft
How do I get exact square footage?
  1. Get a tape measurer
  2. Measure the length and width of each surface
  3. Length x Width = Square Footage

FireWall™ Ceramic Thermal Coating 

FireWall™ is a water based acrylic polymer, loaded with heat reducing ceramic spheres and thermal insulating glass beads. When applied to the sheet metal panels of a passenger vehicles, Firewall™ will reduce heat transfer and help keep the  passenger compartment cool and comfortable. FireWall™ Ceramic Coating is loaded with vacuum sealed fillers, making it flame retardant in addition to being non-toxic and waterproof. Easy to apply with brush, roller or spray gun!



  • High heat, water based viscoelastic polymer designed for thermal insulation
  • Durable ceramic coating that's easy to clean up with water
  • Apply in 1mm layers to the recommended 2 to 3mm of total thickness
  • Excellent for any metal surface you want to protect from high temperatures (firewall, hood, undercarriage)
  • Temperature rated up to 400°F sustained, 500°F intermittent
  • Apply with a brush, roller, or spray gun
  • Made in the USA




 Size Options   1 gallon, 5 gallons 
 Square Foot Coverage   1 gal = 20 sq ft @ 2mm thick (80 mils) 
 Weight  8 lbs (wet) | 5 lbs (cured)
 Total Thickness  Recommended 2-3mm
 Layer Thickness  Apply in 1mm layers 
 Temperature Rating  400°F



Product Usage Tips

  • Always keep a 2" air gap between FireWall™ and the heat source.
  • Clean up with water within 30 minutes of application. Do not wait longer or FireWall™ will dry. Always clean the spray gun between coats by running water through it.
  • If applying multiple layers of FireWall™, wait 30-60 minutes for the product to cure and change color from blue to black.
  • The temperature must be above 50°F for the entire 24 hours cure period after applying FireWall™. Dry times increase with low temperatures and high humidity. If you expect longer than usual dry times, we recommend thinner layers (0.5mm instead of 1mm) to the same total thickness.
  • FireWall™ is designed to adhere to metal. Do not apply to plastic or fiberglass without the proper primer. If applying to a high gloss wax coat, you must sand down and apply a primer.
  • Do not freeze FireWall™! If it does freeze, do not mix, shake, or move until it has completely thawed.
  • Wait 24-36 hours (depending on humidity) before putting upholstery back in the vehicle. Wait 7 to 10 days before painting or applying a bed liner.
  • FireWall™ contains rust inhibitors and dries with a seamless finish. It is water resistant and safe to use for boat soundproofing.
  • FireWall™ is not a bed liner. Even after it has cured, it can be damaged by heavy impact.
  • Shelf life of 1 year when stored at room temperature.



Installation Instructions

  1. Remove loose debris, rust, dirt, and waxy oils to insure a solid contact surface. Most new cars will not need much prep work, while some older vehicles should be treated with denatured alcohol.
  2. Mask off the car for overspray. If applying to the interior, cover any mechanical or moving parts as well as wires and wire harnesses. If you don’t want to cover it in FireWall™, mask it off.
  3. FireWall™ can be applied with a brush or with the Second Skin spray gun. The product will perform either way. Regardless of application method, the goal is to get to a total thickness of 2 to 3 mm. At a minimum, Firewall™ must measure 1mm thick to stop heat transfer (slightly thicker than a credit card). We recommend 2mm-3mm thick. At 2mm thick, 1 gallon will cover 20 square feet.
  4. Apply in layers of no more than 1mm at a time. If FireWall™ runs, you are applying it too thick. After 30 to 60 minutes (depending on temperature and humidity), FireWall™ should be dry to the touch and safe to add another layer.
  5. Most regular paint guns will not be able to spray FireWall™ due to the extremely viscous consistency. We suggest using a HVLP undercoating gun or the Second Skin spray gun. Whichever you use, the nozzle and stem must be 2mm.
  6. FireWall™ is easy to clean up with water if done within 30 minutes of applying the product.
  7. Allow 24-36 hours before another product or upholstery is installed. FireWall™ may be painted after 10 days to cure.


Spraying is the most efficient application method to choose for coating irregular surfaces. Prior to spraying FireWall™, everything close to the panel should be covered and masked off for overspray protection. We recommend using our Second Skin spray gun with an air compressor with 4-6.5 cfm and 50-85 psi. A 5-gallon tank or larger is ideal. If your compressor is smaller you will have to take more breaks to allow it to fill back up. If the breaks are longer than 10 minutes, you must clean out the gun to prevent Firewall™ from curing inside.

Brushing or Rolling On are good options for applying FireWall™, too. Simply dip a paint brush into the bucket or pour the Firewall™ into a roller tray and paint FireWall™ on any metal panel that needs heat protection at the recommended two to three 1mm layers.




What is the difference between Spectrum™ & FireWall™?
Spectrum™ is a dense polymer designed to damp lower-frequency structure borne noises. While it provides thermal insulation, its primary purpose is to stop metal from vibrating. FireWall™ is much lighter. The key ingredients are loads of extremely small glass spheres that are very poor conductors of heat. FireWall™ Ceramic Coating is not rated for vibration damping, as its primary purpose is thermal insulation


You can use both products together. Apply Spectrum™ as the base layer (at least 2 layers, 1mm each). Or choose one of the materials two depending on whether your focus is sound or heat. FireWall™ is excellent as a heat shield!


Is there a non-liquid alternative to FireWall™?
If you need to insulate your firewall but don't want to use a liquid based product, check out our fully peel and stick Firewall Insulation Kit.



Common Product Uses

  • Roof
  • Cabin firewall
  • Vehicle undercarriage 



Contact us if you have any questions!