“blown-in cellulose is great for coverage but man, it’s a nightmare if you ever need to trace wiring later...”
Tell me about it. I spent half a Saturday digging through what felt like a snowstorm in my attic just to find one junction box. Also, I swear the squirrels in my neighborhood treat my soffits like an Airbnb—every spring, something’s moved.
Cellulose definitely has its headaches, but I’ll take that over the itchy mess of fiberglass any day. I switched to dense-pack cellulose when I did my green roof retrofit, and yeah, it’s a pain if you need to run new wires, but the air sealing and sound dampening have been totally worth it for me. Plus, I’ve noticed way fewer critters sneaking in since I sealed up the soffits and added a living roof layer—maybe the squirrels just don’t like the new digs as much...
Dense-pack cellulose is great for air sealing, but I’ve seen it hold moisture after major storms—especially with green roofs where drainage can get tricky. Ever had any issues with damp spots or mold creeping in? Sometimes fiberglass, itchy as it is, dries out faster after leaks...
I get where you’re coming from, but honestly, I’ve seen just as many issues with fiberglass after a big leak—especially if it gets packed down or the vapor barrier’s not done right. Cellulose can be a pain if it stays wet, sure, but I’ve found it actually bounces back better than fiberglass in some older homes. Mold’s more about how fast you catch and dry things out. Green roofs do complicate drainage though... seen a few jobs where the whole assembly needed a rethink after one bad storm.
Mold’s more about how fast you catch and dry things out. Green roofs do complicate drainage though... seen a few jobs where the whole assembly needed a rethink after one bad storm.
That’s interesting—never really thought about cellulose “bouncing back” better than fiberglass, but it makes sense if you’re dealing with older houses where things aren’t always sealed up perfectly. I’ve only ever had fiberglass in my attic (standard builder stuff), and after a small leak last year, it got all clumpy and weird even after I dried it out. Ended up replacing a chunk of it, which wasn’t cheap. Is cellulose harder to install yourself, or is it just the drying out that’s the pain?
The mold thing… yeah, I guess no insulation type is safe if you don’t catch the leak early. I’m always worried I’ll miss something small and then have to rip everything apart months later. Do you use any kind of moisture sensor or just check visually every spring?
About green roofs—those look awesome, but I can’t imagine dealing with the drainage issues on top of regular roof worries. Did you see those jobs with the failed assembly on flat roofs or sloped ones? I keep reading about how flat roofs are way more prone to pooling and leaks, but even with a decent pitch, water seems to find its way in if there’s a weak spot.
Trying to balance cost and peace of mind is tough. Every time I read about someone having to redo their whole roof after a storm, I wonder if it’s worth spending extra now or just hoping for the best and patching as needed. Has anyone here actually saved money long-term by going with something like metal or synthetic underlayment, or does it all come out in the wash once you factor in repairs?
Curious what people are doing for spring checks too. I just walk around and look for missing shingles or soft spots, but maybe that’s not enough…