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Foam-iT! 5 Polyurethane Foam

The Foam-iT! 5 Rigid Polyurethane Foam is an excellent choice for a wide range of applications, from reinforcing faux rocks to repairing fiberglass tubs and creating props. Its quick hardening time and trial size make it highly convenient for both small and test projects. However, additional user reviews detailing its performance and any potential downsides would provide a more comprehensive understanding.

Lowest at any Popular Retailer
$11.98 at Walmart

Where to Buy

Prices last updated: April 20th 2026 6:57 am

Pros

  • Supports a variety of applications such as reinforcing faux rocks, repairing fiberglass tubs, making skulls for props, and science projects.
  • Quick hardening time helps in speeding up project timelines.
  • Comes in a trial size, making it suitable for smaller projects or testing before committing to a larger purchase.
  • Rigid foam structure provides sturdy support for body casting and other applications.

Cons

  • No specific cons mentioned in the provided reviews (additional reviews may provide this information).

Bottom Line

The Foam-iT! 5 Rigid Polyurethane Foam is an excellent choice for a wide range of applications, from reinforcing faux rocks to repairing fiberglass tubs and creating props. Its quick hardening time and trial size make it highly convenient for both small and test projects. However, additional user reviews detailing its performance and any potential downsides would provide a more comprehensive understanding.

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What Reviewers Are Saying

Praised
works great31%
hardens quickly8%
would buy again8%
decent work time8%
Criticized
too rigid15%
cheap plastic lids8%
not what I was looking for8%
absolute garbage8%

Customer Ratings

225 reviews averaging 4.2 out of 5 stars from Amazon
4.2
225 reviews
5
63%
4
16%
3
6%
2
6%
1
9%

Based on 225 reviews from Amazon

Common Questions

Foam-iT! 5 Rigid Polyurethane Foam expands significantly, up to about ten times its original volume, according to the manufacturer's description. It's pretty versatile, so you can use it for things l...

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Discussion

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