Expandable Pour Foam 1:1 Kit

Expandable Foam


FGCI’s expandable foam is perfect for DIY and professional marine, automobile and artistic applications. This is an easy 1:1 ratio, and can be used as structural foam, or as flotation foam (our 2lb foam is Coast Guard Approvable USCG Title 33, Chapter 1, Part 183). Also great to use for DIY coolers, coffin boxes, etc.!


*For Drum Quantities – please contact us via our Contact Us page.


Boat Structural and Flotation Foam


FGCI’s 2 Part Urethane Marine Expanding Pour Foam Kit includes 1 Resin Side and 1 Activator Side for a 1:1 mix ratio, by volume. We offer our 2 part urethane pour foam in 2lb, 4lb and 8lb densities.

2lb is used specifically for flotation application and is a Coast Guard Approvable (USCG Title 33, Chapter 1, Part 183) product and will provide a minimum float of 62 lbs/cubic foot. Those of you looking to have a vessel or project certified with the Coast Guard for flotation capabilities, this is the product you will want to use.

4lb is used for any general structural application that requires medium to moderately heavy loads like decking with high compressive strength.

Our 8lb is primarily used for applications in areas that require more structural integrity like around fuel tanks with the highest compressive strength of all of our foams.

All of our urethane expanding pour foams have closed cell technology that traps air within those tightly packed cells that create buoyancy as well as high water resistance. This is a perfect product for reinforcing structure, insulation within coolers, sculpting, filling voids, and more!

With FGCI, you can rest assured that your batch will be within specs every time, with the same color, viscosity, strength and application characteristics as you would expect from a high quality product. After all, we haven’t been in business for over 60 years without ensuring our quality standards are the highest, and accompanied with the best customer service!

FGCI’s Urethane Pour Foam Offers (dependent upon foam weight chosen):

COAST GUARD APPROVABLE FOAM (USCG Title 33, Chapter 1, Part 183)!
Extensive water resistance with closed cell technology!
Easy 1:1 mix ratio!
Multiple weight options!
High compressive strength!

Liquid Urethane Foam is a two-component, Isocyanate/Polyol based, pour-in-place, urethane foam system available in three separate density formulations by weight per cubic foot.
These foams are used for a variety of applications, including:
– Marine Flotation
– Art
– Sculpting
– Taxidermy
– Prototyping
– Mold Making
– Decorative and Architectural Millwork Pieces
Our 2 Lb. Foam meets USCG Title 33, Chapter 1, Part 183.
In general these foams have:
– Good Compressive Strength
– Excellent Solvent Resistance
– Mold and Mildew Resistance
Maximum service temperature of 180° F

Materials Needed
Mix & Measure Buckets
Personal Protective Equipment (PPE)
Measuring Cups
Mixing Sticks/Power Mixer

Step 1:
Mix equal parts Base and Activator (1:1 by volume) or mix by weight (approx. 112 parts A-Side Base to approx. 100 parts B-Side Activator).

Step 2:
Mixing and metering equipment must accommodate the 1:1 by weight mix ratio.

Step 3:
Mix thoroughly using a stir stick or a mechanical mixer. Please refer to Typical Reaction Profiles of Liquid Foam Chart for mix times.

Step 4: Pour immediately after mixing.

Step 5: Allow cooling between pouring.

Directions may vary by application. For technical support and assistance with critical applications or large pours, please feel free to contact Customer Service at 1-888-849-0588.


PLEASE NOTE: This information is provided in good faith and correct to the best of our knowledge. No warranty, guarantee, or representation is made as to the sufficiency of the information for the safe use of the product, nor to relieve the end user of any Federal, State, or Local regulatory responsibility.

Can this be used to fill the space under the floor
of a boat?
Yes. This foam can be used to fill the space under the floor of a boat and around coolers and fuel tanks to secure them in place.

How much weight can float on a cubic foot of 2 Lb.
62 pounds per 1 cubic foot of 2 pound foam.

Can you add pigment to the product before it
Yes, but all pigments are different. For best results, add 2% pigment by volume to the Activator (B-Side). Test a small sample first.


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