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

  • Based on 85 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Apr 30
Order within 12 hours and 5 minutes
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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.
  • This expandable foam is recommended for void filling in nonstructural applications. It can be poured underneath decks and inside cavities where a lightweight flotation foam is needed to provide buoyancy.
  • 2# Density polyurethane flotation Foam 2 Gallon Kit; Consists of 1 gallon of Part A and 1 gallon of Part B and produces 10 cubic feet.
  • Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
  • 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


Material: Foam, Resin


Item Form: Liquid


Color: Clear


Item Package Quantity: 1


Compatible Material: Fiberglass


Item Form: Liquid


Container Type: Bottle


Viscosity: Medium to High Viscosity


Full Cure Time: 5 Minutes


Water Resistance Level: Water Resistant


Item Package Quantity: 1


Volume: 2 Gallons


Material Type: Foam, Resin


Color: Clear


Brand Name: Fiberglass Supply Depot


Model: poly2lb2gk


UPC: 819794022675


Manufacturer: Fiberglass Supply Depot Inc.


Included Components: Part A Part B


Item Weight: 20 Pounds


Unit Count: 256.0 Fluid Ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Apr 30

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.

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Top Amazon Reviews


  • Good product
Does well. Be prepared to work quickly
Reviewed in the United States on August 27, 2025 by Kindle Customer

  • Works quickly
Works as it should. Expands very fast!!
Reviewed in the United States on April 13, 2026 by Soup bowl

  • Nice
Easy to use not as messy as I thought. Expands nicely. Got about the cubic feet advertised
Reviewed in the United States on September 27, 2024 by daniel harada

  • Good stuff
Worked great just don't use it on a hot day flashes off quickly over 75
Reviewed in the United States on April 9, 2025 by charlie cummings

  • Works well.
The media could not be loaded. 16 oz of part A and 16oz of part B will yield 1 cubic foot of foam. Mix fast as you have 30-45 seconds to mix before it starts to grow. Works great in cardboard forms be sure to reinforce large ones at the top so they don’t bulge. It shapes real easy if needs to be trimmed. ... show more
Reviewed in the United States on February 10, 2024 by Amazon Customer

  • This pour foam works great.
I would recommend this pour foam to anyone replacing their boats foam. This was my first time using pour foam and I can recommend a few things. Get the silicone mixing attachment for a small drill, mask off with plastic film because it doesn't stick well to it and makes clean up easier. I poured a very small amount first to seal up any small holes and then a larger amount to fill space. Hopefully this helps, have fun and good luck. ;) ... show more
Reviewed in the United States on May 19, 2023 by Livin' D. Dream

  • Great chemistry with this product
Over all a high quality expanding foam with an average price point. It will expand quickly so you need to prepare your project before mixing it will not wait for a slow mover!
Reviewed in the United States on June 23, 2023 by William Bell

  • Good
Worked great
Reviewed in the United States on March 5, 2025 by Amazon Customer

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