How do wafers/adhesives handle sweat from exercise etc?

It shouldn't make a big difference. I change once a week and I work out and live in the south.
Sure seals will help with that.

I've been exercising/sweating more lately... I haven't noticed a change in the longevity of my wafers (I change twice a week but honestly I believe I could probably get a full week most of the time, just don't feel the need to push it). However, I did start developing a tiny fungal infection (basically athlete's foot of the peristomal skin) due to sweating under the wafer so I've started using a special powder during wafer changes. It isn't painful though, just a tiny bit itchy.

www.alpglobal.com

I change anywhere from every 4 days to 7 days...I just go by how things feel and how good my skin was the last time I changed. If I messed up placement and have a little irritation I'll change at 4 days. If all is good I go longer. I run at least 4 days a week and boat/swim in the summer and the shortest wear time is still 4 days.

I swear by Sure Seals. They are waterproof/breathable and really maintain the outer edges of the wafer. I don't do a change without one.

I have the same experience as Matt with my wafers. They stay on through anything without peeling up on the edges: hot tubbing, swimming, running, and climbing all day in 95 degree temps etc. I don't find I need to use Sure Seals. I always change twice a week no matter what though. Like Matt said, my wear time hinges on how fast my Eakin ring breaks down. I don't get leaks when the Eakin erodes away, but I do get skin irritation. Sometimes my Eakin wears down faster when I am active in really hot weather, but I am still always able to get 3 days between changes.

I'm a truck driver and I have to get in back of semi trailers and move heavy boxes around. Last summer was my first with an ileo. It can get very hot in those trailers. With the heat and bending over I was quite worried. But it turned out alright. I had no problem with the appliance coming off. The heat and sweat didn't effect it at all. I do use the Stoma Guard Belt by Stomaplex to help keep everything attached and in place.

Yes, you can use sure seals with a one piece; they're just a little trickier to apply. With the coloplast sensura, I cut the hole in the sure seal a little bigger, and then I cut it in half. I fold and cut off a few bits to avoid my belly button and pubic skin (it irritates there). There was a learning curve, but now the whole thing takes me about two minutes.

You're welcome..... they are great (and I don't work for the company!)

Mine covers them. Not sure whether that's across the board or not.