I used to think a bigger fan would solve my attic heat, but after sealing up some old can lights and the hatch, temps dropped way more than I expected.
Yeah, same here. I was all set to convince my uncle he needed one of those big power vents, but he just sealed up some weird gaps around his chimney and boom—attic felt way cooler. Kind of wild how the boring stuff like baffles and foam makes such a difference. I guess sometimes chasing “more airflow” isn’t the answer... Anyone else ever mess with radiant barriers? I keep hearing mixed things about them.
Radiant barriers didn’t do much for me, honestly. I tried the foil stapled under the rafters a few years back—spent a weekend sweating up there—and maybe saw a couple degrees difference, tops. Air sealing and insulation gave way more bang for the buck. Maybe it’s different in hotter climates, but here in Ohio, not really worth it.
That lines up with what I’ve heard from a few folks around here. I’m curious—did you notice any difference in the attic humidity or just temps? I always wonder if radiant barriers help more with moisture or if that’s just marketing. I’ve seen way bigger improvements after sealing up gaps and adding insulation, too. Maybe radiant barriers are more of a southern thing, where the sun’s brutal? Up here, seems like ventilation and insulation do most of the heavy lifting.
I get what you’re saying about radiant barriers maybe being more of a southern thing. Up here in the Midwest, I’ve honestly never seen much difference after folks install them—at least not enough to justify the cost. I did a bunch of research before redoing my attic last year, and everything pointed to sealing up leaks and adding proper insulation as the real game changers for both temp and humidity. After I took care of that, the attic stayed cooler in summer and I didn’t notice any condensation issues over winter.
One thing I do wonder about is if people sometimes expect too much from ventilation alone. Like, it’s important, sure, but if you’ve still got gaps or thin insulation, all the venting in the world won’t help much. I’d rather put my money into thicker batts and making sure the soffits aren’t blocked. Maybe radiant barriers make sense if your roof’s baking in direct sun all day, but around here with our cloudy stretches, it just doesn’t seem like a top priority. Anyone actually see a humidity drop from a radiant barrier up north? I haven’t heard of it yet...
Yeah, I hear you on the radiant barrier hype—felt like marketing more than Midwest reality when I looked into it. I put my cash into beefing up the insulation and tracking down every drafty nook in the attic. Way more bang for the buck, honestly. Ventilation’s good, but if the insulation’s lousy, it’s just spinning your wheels. Only time I’ve seen radiant barriers do much up here is in those rare houses with zero shade and black shingles... and even then, not a night-and-day difference. For humidity? Didn’t move the needle for me either.