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Need advice on replacing an old leaky roof

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Posts: 14
(@josephl34)
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NEED ADVICE ON REPLACING AN OLD LEAKY ROOF

Sometimes it’s just a matter of moving a little insulation away from the eaves to get the airflow back. Doesn’t sound fancy, but it can make or break the whole system.

That’s definitely true, but I’d push back a bit on the idea that it’s always just about airflow and insulation. I’ve seen cases where the roof design itself—pitch, overhangs, even the way valleys are flashed—plays a bigger role than people expect. Sometimes you can have perfect ventilation and still get leaks or ice dams because of how the roof is shaped or how water runs off. Have you looked at whether the original design might be part of the problem? Upgrading materials is only half the story if the geometry isn’t helping you out.


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(@dancer815509)
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NEED ADVICE ON REPLACING AN OLD LEAKY ROOF

You nailed it—roof shape can totally sabotage even the best materials. I had a place with a super low pitch and no matter what we did, water just pooled in the valleys and found its way in. Ended up having to add a cricket and extend the overhangs a bit. Sometimes you just can’t outsmart gravity with insulation alone... Have you checked if your valleys or transitions are trapping water? That’s where I’d start before spending big on upgrades.


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(@nancythompson461)
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NEED ADVICE ON REPLACING AN OLD LEAKY ROOF

That’s actually super helpful to hear. I’ve been stressing about picking the “right” material, but now I’m wondering if I should be looking harder at the design itself. Did you notice leaks right away, or did it take a while before you realized the valleys were the trouble spots? I keep hearing mixed things about flashing too—like, does it really make that big of a difference if the pitch is low? Sometimes it feels like no matter what you do, water finds a way... Appreciate your take on this.


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Posts: 17
(@emilydiyer)
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NEED ADVICE ON REPLACING AN OLD LEAKY ROOF

Flashing’s honestly one of those things people overlook, but it can make or break a roof—especially with low pitch. I’ve seen “waterproof” materials fail just because the flashing detail was sloppy. Out of curiosity, are you dealing with a lot of trees or debris near your roof? That can really complicate valleys and drainage...


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(@cloud_thomas)
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NEED ADVICE ON REPLACING AN OLD LEAKY ROOF

Funny you mention the trees—my place is practically under a canopy, so I totally get the headache with debris. I’ve been on a tight budget, so when I started looking into roof replacement, I realized how much those little details like flashing can add up, both in cost and in future repairs if they’re skipped or done poorly.

For me, I ended up prioritizing good flashing over pricier shingles. It’s not the most glamorous part of the job, but the peace of mind is worth it. I also went with a contractor who was willing to let me help clear out all the old leaves and branches before install—saved a bit there and made sure nothing got trapped under the new materials. If you’re handy, even just keeping those valleys clear can stretch out your roof’s life.

It’s tempting to cut corners when you see the quotes, but honestly, skimping on flashing or drainage just means you’ll be back up there sooner than you’d like... Learned that one the hard way.


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