We're debating between TPO and EPDM roofing for our commercial building, and I'm kinda stuck on the fire safety side of things. EPDM seems solid, but I've heard TPO might have better fire resistance...anyone got experience with either one?
I totally get why you're leaning towards TPO for fire safety. When we replaced our roof last year, I did a ton of research (probably too much, lol). EPDM is solid overall, but TPO usually has built-in fire retardants and tends to perform better in fire tests. Plus, TPO seams are heat-welded, making them less likely to open up under heat stress compared to EPDM's glued seams. Either way, double-check the specific fire ratings from the manufacturer—those details can vary quite a bit. Good luck with your project!
"Plus, TPO seams are heat-welded, making them less likely to open up under heat stress compared to EPDM's glued seams."
Yeah, that's a biggie right there. Honestly, after dealing with glued seams peeling up on our old EPDM roof (talk about headaches...), I'd say you're making a smart call leaning toward TPO. Good luck!
Yeah, glued seams can definitely be a pain down the road... had similar issues myself. Curious though, does anyone know if there's a noticeable cost difference between TPO and EPDM when it comes to installation and repairs?
I've dealt with both TPO and EPDM on different buildings, and from what I've seen, TPO does have a slight edge in fire resistance. EPDM isn't bad by any means, but TPO usually comes with built-in fire retardants, which can be a plus depending on your local codes or insurance requirements.
As for cost differences, TPO tends to be a bit pricier upfront because installation requires heat welding, specialized tools, and trained installers. EPDM is generally cheaper initially since it's easier to install (glued seams, as mentioned earlier), but those seams can become problematic over time, leading to more frequent repairs. In my experience, repairs on EPDM roofs can add up if the seams start failing prematurely.
Long-term, TPO might save you some headaches and maintenance costs, especially if fire safety is a significant concern. But it's worth checking with local contractors to see how pricing shakes out in your area.
