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🛠️ Expand Your Potential with Foam That Works as Hard as You Do!
Fiberglass Supply Depot’s 2 lb density expanding pour foam is a high-performance, two-part polyurethane closed-cell liquid foam designed for boat and dock flotation, soundproofing, insulation, and void filling. This 1-gallon kit yields 5 cubic feet of foam with a rapid 45-second working time and full expansion in 5 minutes, ideal for professional-grade applications requiring lightweight buoyancy and durable, versatile adhesion compatible with multiple resin types.









| ASIN | B08RP8DNDB |
| Best Sellers Rank | #23,333 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #55 in Urethane Adhesives |
| Brand | Fiberglass Supply Depot |
| Brand Name | Fiberglass Supply Depot |
| Coverage | 5 cubic feet |
| Customer Reviews | 4.6 out of 5 stars 292 Reviews |
| Manufacturer | Fiberglass Supply Depot Inc. |
| Manufacturer Part Number | Poly2lbgk |
| Material | Foam |
| Material Type | Foam |
| Model Number | Poly2lbgk |
| Number of Items | 2 |
| Number of Packs | 1 |
| Recommended Uses For Product | Soundproofing, Insulation, Flotation, Void Filling |
| UPC | 819794022859 |
| Unit Count | 128 Fluid Ounces |
G**T
Amazon package handling is poor Product is great
arrived a day late and the packaging was crushed so I would say whoever loaded it or possibly the driver handled the package very poorly! The foam product is awesome easy to use works very well I will definitely buy again
M**D
Great product
Great product
J**N
Works
Works
J**N
Expands quite a bit
Bought this because our truck camper has a habit of moving around in the bed of my truck. When we got to Florida Keys we centered the camper and filled trash bags with this stuff. It worked great. 1500 miles later and the camper hasn't moved. The only thing I would have done different was I would use heavier trash bags next time.
D**E
Fast expanding foam
It was good stuff and it works fast! I almost didn’t have time to put it where I wanted it before it started to expand. It does get a little hot on the fingers so wear protection. But it was super easy to use just mix the two together and be fast!!
J**H
Fast-acting and really dense
Magnificent. I had a sewer vent inside of a wall cavity that was leaking sewer gas inside the concrete slab. Faced with $5000 of work, I instead mixed a cup of each of these and poured it into the cavity. The closed-cell foam blocks sewer gas better than concrete. It worked beautifully! The next day, I decided to fix my tippy mailbox. Instead of mixing a bunch of concrete, I poured in a half-cup of this. Job done. The only thing unclear is that you have to add B to A, not the other way around. (Or maybe it is the other way around. Read the instructions.) The only thing that's annoying is that A and B have different densities so I have to mix it by volume, not weight. I'm probably too careful with that.
E**D
Works Okay for fence posts
I wanted to try this foam for setting fence posts instead of buying the stuff at the home improvement stores. Compared to the Home Improvement store post foam this foam is a little lighter weight and not as hard but still seems to do the job and it is, or was, quite a bit cheaper than the store foam. I don’t know if I would recommend it for building a deck but a residential fence would be fine. Mixing is easy enough, I got a couple silicone measuring/mixing cups and a silicone stirring sticks so I could reuse them once the foam hardened.
T**S
Quality & quantity
Definitely worth it rather than small bottles
R**Y
Mousse de coulée extensible de 0,9 kg
Je cherchais à savoir la différence entre la mousse de coulée extensible de 0,9 kg et celle de 1.8 kg. Je vous dit qu'elle est la différence, celle de 0,9 kg est beaucoup plus expansible que celle de 1.8 kg, par conte celle de 1.8 kg est plus solide que celle de 0,9 kg, elle est là la différence cela dépend de ce que vous cherchez. Pour moi les deux sont excellente. C'est vraiment comme les vidéo.
M**.
Fonctionne bien
Fait très bien le travail
A**E
Boat foam
Worked as advertised, nothing negative to say about it
I**S
Good product
Good customer service
J**F
Kit works well
I used this kit to fill a 4" x 20' conduit containing plumbing lines. We were well prepared and the expanding foam worked excellently
Trustpilot
2 weeks ago
2 weeks ago