Our two-part, closed-cell polyurethane foam kits are designed for ease of use. Simply mix the two components in equal amounts and pour the mixture into the area to be filled. It’s that easy.

Our 2-gallon Foam Kits come complete with chemical-resistant gloves, a mixing blade and a stir stick, as well as detailed mixing instructions. Additional accessories are available in our Accessory Kit (sold separately).

Note: Mixed components can expand up to 15 times their original volume, so it’s important to carefully measure the area you want to fill before determining the foam components required.

Directions for use:

  1. If using a high-speed drill for mixing, start by securing the included mix blade into a 1/4″ drill. If a drill is not available, the components may be mixed by hand using a stir stick, which is included in the kit.
  2. Wear the chemical resistant gloves included in the foam kit, as well as protective eyewear and/or a face shield. Only mix components in a well-ventilated area or with a NIOSH-approved respirator.
  3. Remove caps and seals from Part “A” (ISO) and Part “B” (Polyol) containers.
  4. Pour the desired amount of Part “B” into the mixing receptacle first.
  5. Pour an equal amount of Part “A” into the same mixing receptacle.
  6. Mix components with mixing blade or stir stick for 20–30 seconds.
  7. Pour mixed components into the area, void or mold. Components will set up in less than 15 minutes.

Frequently asked.

Will fuel, oil, or solvents harm the foam?

Because no pourable foam is 100% closed cell, it may absorb a small amount of fuel, oil or solvents if constantly exposed to them. While our foam is resistant to an occasional splash, a strong solvent would eventually break down the foam over an extended period of time.

How much boat and dock foam do I need to fill a 55-gallon drum?

A typical 55-gallon drum measuring 35″ high by 24″ diameter has a volume of about 9 cubic feet. Our 2-gallon 2 lb. density Foam Kit (with a yield of about 8 cubic feet) will fill a drum to within 5 or 6 inches from the top. Our foam kit product page includes the approximate yields of each kit, in cubic feet, making it easy for you to choose the size and number of kits you need for your project.

Is your foam suitable for arts and crafts projects?

Yes. FSI foam is castable and carvable, and very easy to use. It’s also lightweight and paintable, making it a perfect choice for moldings, frames, sculpture, theatrical props and more. You’re only limited by your imagination as to its end uses.

Is your foam affordable?

Our foam kits typically cost less – sometimes much less – than foam from other suppliers, while still giving you all the benefits of a premium product. Our foam kits are available in various sizes to best suit your needs, as well as in bulk drum and tote sets for even greater savings. For large volume users, we also offer foam dispensing equipment.

Can I paint over your foam?

Yes. Painting the foam will seal it and give your project a finished look.

For marine uses, it typically isn’t necessary to paint the foam unless it will constantly be immersed in water. Our foam is not UV resistant, so it should be painted if it will be exposed to direct sunlight.

What is your return policy?

Returns are accepted (subject to a 15% re-stocking fee) if the bottles are unopened, undamaged and returned in the original box within 30 days of the order date. The buyer is responsible for return shipping. Shipping charges on the original order are not refundable.

What makes your foam environmentally friendly?

Our foam is environmentally benign, meaning it doesn’t contain any ingredients that harm the environment. We are proud that our foam does not contribute to global warming, ozone depletion or smog production.

How durable is your foam?

Once set, our foam is extremely durable. It’s also chip resistant, and strong enough to hold tacks and staples, making it ideal for taxidermy forms, arts and crafts projects marine projects and much more.

Can I use your foam to both pour into form molds as well as carve to create my own custom forms?

Absolutely. Whether you use an existing mold to produce a form, or pour a block of foam to cut and carve into a custom form, FSI Foam kits are perfect for both uses. Our foam is the perfect medium for an unlimited number of projects, from taxidermy to arts and crafts, theatrical props, sculpture and more.