How much does Red Devil 0915 Foam & Fill Fire Block expand?

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Hey there! If you're curious about the expansion capabilities of the Red Devil 0915 Foam & Fill Fire Block, here's the scoop based on what we've found. This foam is meant to expand and fill gaps, which is great for preventing the spread of fire through utility openings—a vital safety feature in construction projects.

Just a heads-up, the foam is non-flammable after it cures, but it's still flammable before it sets, so you'll want to be cautious while applying it. The manufacturer makes a point to note its compliance with fire safety standards like ASTM E814 and NFPA 290, so it's definitely up to the task once cured.

While applying the foam, some folks have found it a bit sticky and noted it keeps expanding for a bit after you've put it in place, which can make things a little tricky.

A lot of our research suggests prepping well is key, like keeping some solvents handy for cleanup and making sure to follow all the application instructions closely—really helps in getting the best results.

Despite needing a careful hand during application, many find it quite effective for sealing and insulating, especially when it comes to blocking drafts.

So, if you're tackling a project that needs solid fire-blocking and insulating, this foam could be a handy option!