Here's the thing about spray foam insulation - it's not a one-size-fits-all deal. And honestly, that's a good thing.
We've worked with homeowners in Denver who thought all spray foam was the same. They'd call us asking for "the spray foam" like there's only one option sitting on a shelf somewhere. But the reality? There are different types of spray foam insulation, each with its own strengths, and picking the right one makes a real difference in how your home performs.
Your energy bills, your comfort on those freezing January mornings, even how quiet your home feels - it all connects back to this choice. We're going to walk you through the main options, show you where each one works best, and help you figure out what makes sense for your specific situation.
Not Sure Which Types of Spray Foam Insulation You Actually Need?
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What Spray-Foam Insulation Actually Does for Your Home
Let's start with the basics. Spray foam isn't like those pink fiberglass batts you might've seen in your parents' attic.
The Two Main Types You Need to Know About
It starts as two liquid components. When they mix and hit your wall cavity or attic, they react and expand - sometimes up to 100 times their original size. As they expand, they fill every crack, gap, and irregular space. Then they harden into place, creating a seal that's both insulating and airtight.
Open-Cell Spray Foam: The Budget-Friendly Option
That's the key difference. Old-school insulation like fiberglass just sits there. It provides some thermal resistance, sure. But air still moves around it, through it, behind it. That's why you get drafts.
Closed-Cell Spray Foam: The High-Performance Choice
Spray foam? It stops air movement completely. Which means:
No more cold spots near windows or along exterior walls
Fewer drafts sneaking in through tiny cracks you didn't even know existed
Better moisture control (especially important in basements and crawl spaces)
Lower energy bills because your HVAC isn't working overtime
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