I’ve looked into those cool roof coatings, but honestly, the science seems hit or miss depending on your roof type and climate. Some folks swear by them for reflecting heat, but if your attic’s already got good airflow and you’re using a lighter tile, the extra benefit might be pretty minor. I’d put more faith in your venting and underlayment choices than a coating, at least for most composite setups.
That’s a fair take—coatings aren’t some magic bullet, especially if you’ve already got decent venting and lighter tiles. I’ve seen more improvement from swapping out old felt underlayment for synthetic than from any reflective coating. What kind of underlayment did you end up going with?
I’ve seen the same thing—synthetic underlayment made a bigger difference than I expected, especially compared to coatings. A few years back, I inspected a house where the owner had put down a high-end reflective coating, but the attic was still roasting in July. Later, he swapped out the old felt for synthetic when he did a re-roof, and you could actually feel the temp drop up there.
I’m curious, did you go with a basic synthetic or one of those “peel-and-stick” types? I’ve noticed the peel-and-stick stuff holds up better in spots prone to ice dams, but it’s pricier. Also, how was the install? Sometimes the thinner synthetics can wrinkle if the crew isn’t careful.
Around here (humid summers, cold winters), I’ve found synthetic underlayment helps with both moisture and heat. But I’m always interested to hear if folks in drier climates notice the same. Ever run into any issues with the composite tiles and synthetic combo, like slippage or noise during storms?
I went with the basic synthetic, not peel-and-stick—mostly because of the price difference, but also because my roofer said it was fine for our area (Midwest, so we get both humidity and cold snaps). Install seemed smooth, no major wrinkles or issues. Haven’t noticed any slippage or weird noises with the composite tiles, even during a couple of big storms. I was a little worried about that, but so far, so good. The attic definitely feels cooler now compared to when we had the old felt.
Interesting to hear you went with basic synthetic and not peel-and-stick. I’ve been reading up on both, and honestly, I keep hearing mixed things about whether the extra cost for peel-and-stick is worth it unless you’re in a hurricane zone or somewhere super wet. Midwest weather can be wild, but if your roofer’s confident and you’re not seeing any issues, that’s a good sign. Cooler attic is a huge bonus—did you notice any difference in noise during storms? Some folks say composites can be louder, but maybe that’s just with metal roofs.