Venting’s one of those things that gets overlooked until you feel the difference, right? I had a similar situation—old house, barely any intake, and the attic was roasting. Once we added more soffit vents, it was like night and day. If you’re budgeting for a CertainTeed roof, I’d put venting high on the list. It’s not just about comfort; it can actually help your shingles last longer since trapped heat cooks them over time.
On underlayment, yeah, DiamondDeck is slick when wet. My crew used old carpet runners for grip—looked goofy but worked. If you’re doing anything yourself up there, just be careful.
Flashing and underlayment costs do add up, but skipping them is asking for leaks down the line. I tried to cut corners on flashing once (regret), and ended up paying more to fix water damage later. If you want to save money, maybe look at recycling or eco-friendly options for some materials—sometimes local suppliers have deals on recycled metal or composite products that work just as well.
If you’re in a spot with big temperature swings, don’t skimp on insulation either. It’s not glamorous but pays off long-term.
I get the point about venting, but honestly, I didn’t notice a huge difference after adding more to our place. Maybe it’s just our layout or the fact that we don’t get crazy hot summers here, but the attic temp only dropped a little. Not saying it’s not important—just that sometimes the impact isn’t as dramatic as people say, especially if your house already has some airflow.
On underlayment, I actually went with a cheaper synthetic (not DiamondDeck) and it held up fine during install. The grip wasn’t great either, but I just wore those grippy gardening gloves and took my time. If you’re careful, you can save a few bucks there.
Flashing though...yeah, learned that lesson the hard way. Water found its way in around the chimney last winter and fixing the drywall was not fun.
Insulation’s another one where I went middle-of-the-road. Blew in cellulose myself and it made a bigger difference than anything else I did up there. Sometimes it feels like everyone pushes for top-of-the-line everything, but mixing and matching based on what really matters for your house can help keep costs down.
Mixing and matching is honestly the only way I was able to afford my roof project without cutting corners where it counted. I get you on the venting—everyone swears it’s a game-changer, but unless you’ve got a real heat problem, sometimes it’s just not dramatic. I cheaped out a bit on underlayment too, just like you, and never had issues as long as I was careful. Flashing, though...that’s where I learned not to skimp after getting a surprise ceiling stain one rainy spring. Cellulose insulation made a bigger difference for me than anything else as well. Sometimes “good enough” really is good enough, especially if you’re the one doing the work and living with the results.
