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Feeling good about my switch to composite tiles - worth it?

827 replies 23.5 K views
 
4 posts

the material’s only as good as the hands putting it on.

That’s the truth. I went composite last year, partly for the eco angle, but I nearly bailed after hearing horror stories about bad installs. My neighbor’s roof looked great at first, then started leaking around the chimney - installer cut corners on flashing. I lucked out with a crew that actually cared, and so far, zero issues through two nasty storms. If you’re going green, don’t cheap out on labor... learned that the hard way on a previous project.


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wafflesbirdwatcher
11 posts

I lucked out with a crew that actually cared, and so far, zero issues through two nasty storms.

I get the point about labor, but honestly, even with a good crew, composite tiles can be hit or miss depending on the brand and your roof’s layout. I’ve seen a few installs where the material itself warped a bit after a hot summer - installer did everything right, but the product just didn’t handle the heat. Sometimes it’s not just the hands, but what’s in the box, too. Just my two cents.


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snowboarder144686
7 posts

Sometimes it’s not just the hands, but what’s in the box, too.

That’s a fair point. I’ve been researching composite tile brands and noticed some have way better heat ratings than others, but the marketing is all over the place. For those who’ve had issues with warping, was it mostly lighter colors or darker ones? Also curious if attic ventilation played a role - seems like that could make a difference in how much heat builds up under the tiles.


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illustrator20
21 posts

I’ve seen attic ventilation make a pretty noticeable difference with composite tiles, especially in hotter climates. When there’s not enough airflow up there, the heat gets trapped and can push even the higher-rated tiles past their limits. In my experience, darker tiles do seem to warp a bit more, probably just because they soak up more heat. I’d double-check what kind of underlayment you’re using, too - some of the cheaper options don’t help with heat at all.


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6 posts

When there’s not enough airflow up there, the heat gets trapped and can push even the higher-rated tiles past their limits.

That’s a good point. I swapped to composite tiles last year and didn’t realize how much attic airflow would matter until summer hit. Ended up adding a couple more vents and it made a noticeable difference - my upstairs wasn’t nearly as stuffy. I went with a lighter color, too, just to play it safe. As for underlayment, I splurged on a recycled synthetic one. Not cheap, but it’s supposed to help with heat and moisture. Anyone else try the “cool roof” coatings? I’m curious if they’re worth the hype or just marketing.


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