Fire resistant foam insulation contains fire retardant, and some are specifically formulated for fire resistant use.  If you need a fire resistant foam for insulation, be sure to choose one specifically marketed as such.  These products possess a higher degree of fire resistance than standard foam insulation.

Fire Resistant Applications include :
- fire resistant installation of window and door frames
- fire and smoke resistant sealing of connections between walls, ceilings and floors
- sealing of all openings in roof constructions
- sealing of cable and pipe penetrations in walls
- improving thermal insulation in heating and cooling systems

Soudal makes a fire proofing single component PU Foam with non-hazardous propellant and high adhesion to many building materials. SOUDAFOAM FR with CFC-free propellant is a one-component, self expanding, ready to use polyurethane foam with propellants which are completely harmless to the ozone layer. It has a fire rating of up to 229 minutes (4 hours) according to the new European Norm CE 1366-4.

Touch ‘n Seal makes foam sealant and insulating products that contain fire retardants. These foams are intended to resist flaming, and slow flame spread.  However, they cannot stop a fire from spreading indefinitely. Touch ‘n Seal foam is flammable and a fire hazard during dispensing. Do not use around fire or flame, and be sure to extinguish all pilot lights in the area.

ELCH PRO Fire Rated group contains four specialized products for domestic and commercial building applications. FR Silicone and FR Intumescent Acrylic sealants are both tested to BS 476:part 20 and fire rated to 4 hours. FR Acoustic Sealant is also sound tested to a value of 55dBA and is supplied in large volume packs. FR Polyurethane B1 Foam is fire rated between firm, mineral construction substrates and in this application meets the requirements of building material class B1 according to DIN 4102 part 1.

Froth-Pak, although combustible, has a European Class B2 or new Class E fire rating which is equivalent to BS EN11925-2, making it difficult to ignite. The foam’s low thermal conductivity makes it approximately twice as effective as an insulation material as other forms of insulation such as glass fiber, expanded polystyrene and mineral wool.

There are several manufacturers of fire resistant foam insulation products. Be sure to check their fire retardant properties and fire rating specifications so that they suit your purpose.

There are different products for different purposes. It is important to find the matching product for your job. These products generally come in handy-sized packs or cans and are easy to use.

Here is a list of typical special purpose expanding foam insulation products. Check the labeling to determine if the product is designed for interior or exterior use, toxicity to animals and plants, cleanup, and storage.

Acrylic/Latex Foam Sealant

Paintable
Clean up with soap and water
Low expansion
Reusable dispensing
Interior use

Minimal Expansion Sealant

Seal small cracks and gaps
Insulate against energy loss

High Expansion Sealant

Fill larger holes and gaps
Block insects and pests

Window & Door Sealant

Seal around window or door frames
Low pressure to not bow

Exterior Filler and/or Adhesive

Adhesive for landscaping projects
Direct water flow in and around water gardens
Fill decorative planters for artificial arrangements

Fire Block Foam Sealant

Fill and seal fire service penetrations
Retard fire and/or resist flame

As you can see from this list, there are many choices that give you the right product for your expanding foam insulation and sealing application. Wear protection eyewear and clothing for safety and easy cleanup whenever you use expanding foam insulation.