2 Lb Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boat and Dock Flotation, Soundproofing, Filling Voids, and Insulation (Quart Kit)
Condition: New
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This item is eligible for return within 30 days of receipt
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Availability:
In Stock.
Arrives
Tuesday, Aug 5
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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 Quart Kit; Consists of 1 pint of Part A and 1 pint of Part B and produces 1.25 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: Resin
Compatible Material: Fiberglass
Item Form: Liquid
Special Feature: Water Resistant
Package Dimensions : 8.15 x 5.39 x 3.74 inches; 2 Pounds
Item model number : poly2lbqk
Date First Available : December 23, 2020
Manufacturer : Fiberglass Supply Depot Inc.
Best Sellers Rank: #39,655 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #70 in Urethane Adhesives
#70 in Urethane Adhesives:
Customer Reviews: 4.4 4.4 out of 5 stars 155 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Aug 5
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Why did you pick this product vs others?: Great product. Just remember when you use it LESS IS MORE. if not you will have a lot of waist.
Reviewed in the United States on July 8, 2025 by Ron Robichaud Ron Robichaud
I used it on a lifeguard float I use to display a dive flag that I had cracked and wanted to salvage. I did the math on volume of the interior in like 5 seconds and was off on my mix a little on the too much side. Was quite enjoyable when the reaction happened as it was quite explosive. I had just poured one part in then the other and shook the entire float. This is contrary entirely to the instructions mind you, but it apparently works well enough and maybe a minute later the float was launching foam from the cracks and the plug hole. 10/10 entertainment value alone.
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Reviewed in the United States on May 4, 2025 by Brendan
0.5 ounces and this is expansion rate. Wonderful stuff
Reviewed in the United States on April 27, 2025 by Sky Tee Sky Tee
I thought I was getting bottles much larger than the ones I recieved, which would make the price seem fair, but it's definitely not worth the price for this small of bottles. The foam itself is great though, the cells are super dense, it cures quickly, and shaping/sanding is pretty easy and doesn't leave gunk on anything.
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Reviewed in the United States on October 23, 2023 by Customer
I have used this product for several projects over the years, from filling a hole left in a basement wall where the conduit from a service entrance that was moved came thru (it takes several as it has to fill the void in the block from the bottom of the wall up past the hole), to filling false 6x6 posts at the end of my driveway.
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Reviewed in the United States on December 6, 2024 by Cubby
Does not work where there is any water
Reviewed in the United States on May 12, 2025 by Jeanett
This stuff failed miserably for my application. It expands very quickly if you have any thoughts of using a funnel of any kind just forget it! despite my failings with it the foam itself is very strong and dose what it says just work fast and forget funnels! i made a simple funnel out of a sheet of cardboard to try and pour it into a hard to reach spot and it just foamed up in the funnel blocking it almost instantly.
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Reviewed in the United States on December 3, 2024 by david
I teach Sunday School and do quick science experiments to keep them interested and wanting to come to class. Polymerization is an amazing thing. I mix the chemicals in a small plastic cup and it overflows the cup. After it dries, I pass it around. Kids like to take it home. I do wipe off the lids with paint thinner so they will re-open next time. the lids can seal shut.
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Reviewed in the United States on December 14, 2024 by weeb behall