Turning attics and garages into bedrooms: is it worth the hassle?

- Mini-splits are definitely the way to go for old houses—no need to rip up original floors or walls.
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“buyers care more about usable space and comfort than fancy heat underfoot.”

Spray foam’s a pain up front, but honestly, it’s a game changer for weird old attics. Batt insulation just doesn’t cut it with all those funky angles and gaps—air sneaks through everywhere. I’ve seen folks try to save a buck with batts and end up regretting it every winter. If you’re already going through the hassle of converting the space, might as well do it right and not freeze your toes off later. That said, if you’re not planning to live up there much, maybe batt’s “good enough.” Just depends how much you hate drafts...

I get where you’re coming from, and yeah, spray foam is like the Cadillac of attic insulation. But honestly, I’ve had a totally different experience with batts in my old place. The attic was a maze of weird beams and nooks, and yeah, it took some creative slicing and stuffing, but with a little patience and a few cans of spray foam for the worst gaps, it actually held up pretty well. I’m not saying it was spa-level cozy, but I never felt like I was camping in January, either.

Maybe it’s just me, but there’s something satisfying about doing it the old-school way and making it work. Plus, there’s always the budget thing—spray foam was just out of reach for us. I guess if you’re planning to make the space super fancy or you’re sensitive to cold, it’s worth the splurge. But sometimes “good enough” really is good enough, especially if you’re just turning the attic into a guest room that gets used twice a year.

Maybe it’s just me, but there’s something satisfying about doing it the old-school way and making it work. Plus, there’s always the budget thing—spray foam was just out of reach for us.

I can relate to the satisfaction of a hands-on approach, especially in older homes where nothing is ever square or standard. Batts definitely have their place, and with careful installation, they can perform decently. That said, I’ve run into issues with air leakage around all those odd angles and knee walls—sometimes it’s tough to get a truly tight fit, even with spray foam in the gaps.

One thing I’ve always wondered: did you notice any long-term settling or gaps forming over time? In my 1920s house, I found that after a few seasons, some of the batts started to slump or pull away from the rafters, especially where there was a lot of vibration from the roof. Maybe it’s just the quirks of older framing, but it made me rethink how “good enough” holds up after a few years.

Curious if you had to revisit any spots or if it stayed put once you’d finished.

I totally get what you mean about the satisfaction of doing it yourself, especially when the budget’s tight. I’ve had similar issues with batts shifting over time, especially in spots where the framing wasn’t exactly straight. In my case, I ended up stuffing a bit of extra insulation in the worst gaps after a couple years—nothing major, but it helped. Did you use any kind of netting or supports to keep things in place? Sometimes I wonder if that would’ve saved me a headache or two down the line.