TPO Love

My all time favorite TPO failure. Would've been easier to temp w/o the coating or bentonite dumped all over it.

[IMG]http://i80.photobucket.com/albums/j175/Roberts406/Roofing/blowup1.jpg[/IMG]

[IMG]http://i80.photobucket.com/albums/j175/Roberts406/Roof>>>

You asked what makes the PWT Welder better than the Leister. I have worked with Leister for years. The biggest thing that stands out with the PWT welder, is that it will not weld if it is not at the right temperature. It will not weld if the generator>>>

Heat welders can be very touchy and extremely unpredictable if the person running it doesn't know what to look for. To be honest, There is a welder called a PWT Lazer, that shuts off if it is not at the right temperature, or if it is not getting enough>>>

I do a ton of TPO and PVC work and I have never seen something like that. It looks like a "Shatter" situation you would see on the old Trocal membranes, but I have never seen or heard of a similar situation on TPO. There is a coating that is awesome f>>>

Ah ha......

The key word in my quote was "small". On something small, like egg was asking about, the price of membrane material is pretty much a moot point. 10 square, so what's another 30 or 40 bucks/square when the whole job is probably 10K or mor>>>

Mike, "Did I say that?"

Kind of...

"A 60 mil TPO, (Carlisle in my humble opinion) on a small roof, is likely going to give a customer a suitable lifespan. But when you could put 60 mil or 90 mil EPDM on a the same price, the TPO seems foolish to>>>

LOL LOL, love your last line.

I'm sure a competitor will use that against me some day. Gotta get my reply.

I think I got it.... Yeah, but the ark was only built to float for a couple of months.>>>

When EPDM first came out or when first exposed to it, roofers were like (including myself) "this is a damn inner-tube, this is junk, this will never last" but it took hold and worked out after some issues. Then seam tapes came out and initially they fa>>>

Jedd wrote: [quote]Mike, it was'nt so much problems during installation, it's cake to apply, fully adhered weld the seams with a robot, the unsupported on the kerbs is the only pain. No, like I said it is the concept, lack of structure maybe also>>>

>Chasing leaks on it is a nightmare as I am sure you have experienced.

I love every minute of it!

Chasing leaks is probably as close to the perfect job that someone like me can have.

>The guy over our area actually said that they like the TPO because i>>>

Firestone Ultraply 78 was the Cooley sheet. JM was made by CGT.

What problems did you see with the Firestone.

(I'll catch up later........... gotta go)>>>

Jedd,

Which pvc's have you installed? We've had mixed results ranging from trocal, durolast and some CGT products that were miserable, Cooley sheets that have worked fairly well, Sarnafil has been very good, and in 27 years, I've never had a Fibertit>>>

Chipper wrote: [quote]Mike H, In comparing TPO to EPDM applications, I was curious if you could actually install the 60 or 90 mil EPDm at or near the price of TPO as mentioned. It looks to me like Carlisle has priced the TPO to move. The only EPD>>>

Also addressing Jedd's article. What do you guys do to avoid the scenario where condensation can form on the underside of the membrane in mechanically attached systems? Are you using a vapor barrier over the deck? Are you staggering insulation joints>>>

Mike H, In comparing TPO to EPDM applications, I was curious if you could actually install the 60 or 90 mil EPDm at or near the price of TPO as mentioned. It looks to me like Carlisle has priced the TPO to move. The only EPDM I can get cheaper than TPO>>>

We've put a lot of TPO down. It's mostly owner driven. If I push TPO to be competitive, it's going to be 60 mil as suggested and I only use Carlisle. We've yet to have any major problems with Sure-Weld but I can see where it's going to take a litt>>>