Should You Insulate Your Garage? Here’s What Most Homeowners Don’t Know
By Fernando Moore | Quirozave Spray Foam | The Dallas Insulation Show
❓Why would anyone insulate their garage?
Great question — because most garages aren’t part of a home’s “conditioned space,” meaning they’re not heated or cooled like the rest of the house. But here’s the kicker: a poorly insulated garage can still wreck your comfort and energy efficiency.
Think about it — your garage shares walls (and often ceilings) with your home. If it’s blazing hot or freezing cold in there, that air pushes right into the house. Insulating your garage helps keep the temperature in the rest of your home more stable and your HVAC from working overtime.
❓Is spray foam better than fiberglass for garage insulation?
Absolutely — and here’s why.
Traditional fiberglass insulation may work OK for walls that stay dry and untouched. But in garages, where moisture, pests, and temperature swings are common, fiberglass just doesn’t hold up.
Spray foam insulation creates a seamless air barrier that:
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Blocks heat and cold more effectively
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Seals out drafts, dust, and bugs
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Adds structural strength to your garage walls
And bonus: it also acts as a sound barrier, so you can run tools, music, or even a little weekend band practice without driving your family crazy.
❓Does garage insulation really lower energy bills?
If your garage shares a wall or ceiling with your living space — then yes, absolutely.
When you insulate the garage, you reduce the heat transfer into rooms like bedrooms above the garage or living rooms next to it. That means your HVAC runs less, saving you energy and extending the life of your system.
We’ve seen homeowners lower their energy bills by up to 15% just by insulating the garage properly.
❓Can I insulate my garage door too?
Yes — and you probably should.
Garage doors are huge, uninsulated slabs of metal that act like heat magnets in summer and ice panels in winter. You can upgrade to an insulated door or install spray foam panels that add R-value and sound protection.
This is one of those “little upgrades, big comfort” moves.
❓How much does garage insulation cost?
Prices vary depending on the size of the garage and whether you’re doing walls, ceilings, or doors. On average:
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Wall insulation (spray foam): $1.50–$3.50 per square foot
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Garage door insulation kit or foam upgrade: $200–$800
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Full 2-car garage job (walls + ceiling): $2,000–$5,000
It’s not cheap — but it’s a one-time investment that pays off with savings, comfort, and resale value.
Final Thoughts from Fernando
Listen — your garage doesn’t have to be a sauna in summer or a freezer in winter. With spray foam insulation, you can turn that space into something actually useful — a workshop, gym, office, or just a better buffer for your home.
📞 Call Quirozave Spray Foam at 469-338-9847
Let’s turn your garage into an asset, not a problem.
