Search  for anything...
Fiberglass Supply Depot Inc.

4 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

    • Based on 131 reviews
Condition: New
Checking for product changes
$75.99 Why this price?

Buy Now, Pay Later

As low as $12.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Nov 9
Order within 13 hours and 28 minutes
Available payment plans shown during checkout

Features

  • Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
  • 4LB. Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 2 cubic feet.
  • Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
  • The 4LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
  • All expansion rates and times given are temperature critical. Temperatures below 75 F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75 to 80 F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

Brand: Fiberglass Supply Depot Inc.


Material: Foam,Resin


Compatible Material: Vinyl


Item Form: Liquid


Item Package Quantity: 1


Product Dimensions ‏ : ‎ 10 x 9 x 6 inches; 10.67 Pounds


Date First Available ‏ : ‎ August 19, 2021


Manufacturer ‏ : ‎ Fiberglass Supply Depot Inc.


Best Sellers Rank: #25,586 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #36 in Urethane Adhesives


#36 in Urethane Adhesives:


Customer Reviews: 4.5 4.5 out of 5 stars 131 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Is as advertised
Just follow the instructions and the product will do its job. It gives you just enough time to mix and pour to finish your project and sets up solid enough to stand on within 10 minutes. Can easily withstand the weight of a person bouncing up and down on it. Just wish that it would expand a little bit more, having to buy a few more jugs to finish my boat project. Definitely gets pricy. ... show more
Reviewed in the United States 🇺🇸 on May 2, 2023 by Trevor
    • Awesome!
Awesome stuff. Definitely follow the instructions. My first batch I mixed by hand, and it Did not go so well. Second batch I used a drill to mix, and it worked flawlessly! Start with a small batch till you figure out how much you need to use. A little goes a long way
Reviewed in the United States 🇺🇸 on May 1, 2021 by Josh S.
    • Good product
This is a good product and does great when concrete isn’t feasible. It works as advertised
Reviewed in the United States 🇺🇸 on August 28, 2022 by Luke Baldwin
    • Great for Taxidermy
I am a Taxidermist of 40 years this foam works great for form alteration and building habitats, the price is competitive for the market. Good foam great expansion.
Reviewed in the United States 🇺🇸 on March 23, 2022 by Amazon Customer
    • Great product .
Great product.
Reviewed in the United States 🇺🇸 on July 5, 2022 by Alejandro Lorenzo
    • Read before using
Depending on the size area you are trying to cover definitely make sure you go with the right amount. I bought this expecting it to cover a pretty decent space thinking they were gallon jugs. They aren't. As far as the directions go. Dont do for the 20 seconds they say. Put in a cup mix well with a drill and paddle till you feel it getting hot or a mocha type color and pour quickly. Took me my third try to figure out what exactly I was doing wrong. ... show more
Reviewed in the United States 🇺🇸 on March 15, 2022 by nicolai alvarez
    • Good product
Works well for making base for taxidermy
Reviewed in the United States 🇺🇸 on April 27, 2022 by Dano
    • I bought two different brands
Bought different brands this was lesser of the two I will buy the other brand again not this one
Reviewed in the United States 🇺🇸 on September 2, 2022 by Chris burmeister

Can't find a product?

Find it on Amazon first, then paste the link below.