The ease of application and huge yield from a single can of pro-style foam is reason enough to use a gun rather than a straw, but like many other carpenters, I've long been frustrated with the reliability of my foam guns. I've tried a lot of brands, and sometimes had them quit working after only a few weeks. But after several conversations with industry insiders, I learned that the problem wasn't the gun-it was me. With a better understanding of how the gun works, and what can cause it to fail, I've learned the secrets to keeping this tool working well for years.
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