Title: Need Advice On Replacing An Old Leaky Roof
I learned the hard way about ventilation when I did my first roof tear-off. Thought I was being clever by just slapping on new shingles and calling it a day. Didn’t even think twice about the attic vents—figured, “Hey, it’s always been fine.” Fast forward two summers and I had mold creeping up the rafters and the upstairs felt like a sauna. Ended up ripping out half the insulation and redoing the venting, which cost more than if I’d just done it right from the start.
Radiant barriers are one of those things I used to think were kind of a gimmick, but after helping my neighbor install one, I changed my tune. His attic dropped at least 10 degrees, and you could actually walk up there in July without feeling like you’d pass out. Not sure they’re a must-have for everyone, but in hot climates, they make a noticeable difference.
I get what you’re saying about cellulose insulation too. It’s not cheap, but after blowing it in myself last winter, our heating bill dropped enough that my wife stopped complaining about drafts every night. If you’re already tearing off the roof, it’s worth looking at what’s under there before you put everything back together. Sometimes you find rot or old insulation that’s basically just mouse bedding at this point.
One thing I’ll say—don’t get too caught up in fancy shingle brands if your budget’s tight. The underlayment and ventilation matter way more for long-term durability than whether your shingles have some “lifetime” warranty. Learned that lesson after watching my neighbor’s “premium” shingles curl up after five years because his attic was basically an oven.
Anyway, just my two cents from messing up more than once. Sometimes the stuff you don’t see is what saves you money and headaches down the line.
Couldn’t agree more about the hidden stuff making all the difference. I once skipped checking the decking because “it looked fine from below”—turned out there was rot right under the old vent. Ended up redoing part of the roof a year later. Lesson learned: always poke around before sealing things up. And yeah, those “lifetime” shingles are only as good as what’s underneath them... marketing can be a bit much sometimes.
Totally agree about the “lifetime” shingles—people get sold on that label and forget about the structure underneath. I’ve seen folks replace a roof and skip checking for soft spots in the decking, just because it looked fine from inside the attic. Ever had to deal with hidden water damage around chimneys or valleys? That’s usually where I find the worst surprises. Curious if you guys strip everything down when you do a replacement, or do you sometimes just patch what looks bad?
I’ve run into that problem with valleys more times than I care to admit—water just finds its way in no matter how careful you are. I always strip everything down to the decking, even if it looks good from the attic. Learned the hard way that patching can hide rot or mold that’s just waiting to spread. Have you ever found issues under old ice and water shield? Sometimes that stuff traps more than it protects.
Sometimes that stuff traps more than it protects.
That’s the truth—I once pulled up a section of ice and water shield on a 1920s Tudor, and the smell hit me before I even saw the blackened decking. It’s wild how something meant to keep water out can actually lock it in if there’s the tiniest breach. Ever tried any of those newer breathable underlayments? I’m curious if they actually help or just add another layer for trouble to hide under.
