TPO Roofs

Just trying to keep up w/ the PVC thread :dry:

Seriously :side: I :silly: am going to a TPO Seminar soon, and don't know much :( about the product. :huh: I don't know if it is welded, adhered or what :woohoo: Just looking for heads up :unsure:

Know what I mean, Vern? :side:>>>

its a hot air welded some can be adhered or srews and plates or both. JM or GAF?>>>

What little I know: You can mechanically attach or fully adhere. It's weldable with a heat gun, either a hand held job or a robot with an expensive generator. Leister seems to be the brand of choice for both welders.

It takes about five feet of seam to learn how to weld. It's kind of fun for the next eight feet, then after that it's damn tedious. I imagine after a while a guy could do it in his sleep, but I found keeping the heat between a cold weld and shriveled up membrane required my full attention.

If you do the work on a sunny day you'll think you forgot to wear your sunglasses, but then realize that you have them on.

I just inspected a TPO roof we did four years ago and it is holding up as expected.

Not everybody agrees on the durability of the product, but then we don't agree on anything. I don't install it anymore because we don't do enough to be proficient and my EPDM bench is pretty deep.

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I think it takes a little more than 5 feet to weld,ive been installing carlisles tpo for 5 years now and the toughest thing about tpo is cold welds.Whatever you do clean,clean,clean.The slightest bit of dirt and your done for.It is a cleaner way of flat roofing but like others im not to sure of the durability.

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Miscreant,

The only people that sing the praises of TPO are people that haven't seen one more than 10 years old. Give them time, then we'll all agree. LOL

Actually, I've never seen a white one show any problems in 4 years. Start watching about year 7-8-9 for 45 mil. At least that's been our experience. It's been true for every brand we've installed. Our first Firestone is 6 years old this year, and want to get a look at it this summer or next. We'll see.

Before that Firestone, dating back to the Goodyear's of the late 80's, plus the 90's products of Steven's, Genflex, and Carlisle, we've seen the trouble with all of them.>>>