Had a job last winter where the homeowner doubled up on attic insulation thinking it’d save on heating, but they didn’t add any extra vents. By spring, there was so much condensation up there, some of the rafters started to swell and crack. It’s wild how fast moisture can mess things up. I’m with you—ice/water shield underlayment has been a game changer for me, especially in places with wild temperature swings. Cost hurts, but chasing leaks every year is worse.
I hear you on the vents—my neighbor did the same thing, just piled in more insulation thinking “more is better,” but skipped any airflow. Ended up calling me over to look at mold spots by Easter. I’m all about saving on heating, but if you don’t let that attic breathe, you’re just asking for trouble. Ice/water shield is pricey, yeah, but honestly, patching up water damage every couple years costs way more in the long run. I’d rather pay once and sleep easy than keep playing whack-a-mole with leaks.
I’m all about saving on heating, but if you don’t let that attic breathe, you’re just asking for trouble.
That’s the truth. It’s wild how many folks just cram in insulation and hope for the best. I had a similar thing happen when we first moved in—thought I was being clever, but those little black mold spots by the rafters showed up quick. Airflow’s underrated. And I hear you on the ice/water shield cost, but yeah, paying upfront beats chasing leaks every spring. Peace of mind’s worth a lot.
Yeah, I’ve seen folks block off every vent thinking it’ll keep the heat in, but then you get condensation and all kinds of headaches. I’m in the Midwest—ice dams are brutal if you don’t have good airflow up there. Insulation’s great, but not at the expense of ventilation.
Insulation’s great, but not at the expense of ventilation.
Totally agree with this. I tried to “seal up” my attic a few years back, thinking it’d save on heating bills. Ended up with moldy roof decking and a musty smell that wouldn’t quit. I’m in northern Illinois, so ice dams are a real thing here too. Switched to a green roof system last year—lots of native plants, plus extra insulation and a vented assembly underneath. It’s helped keep temps more stable and I haven’t had any splitting or leaks since. Definitely learned the hard way that airflow matters just as much as insulation.