[jjshaggy]

my favorite to install is tpo,and pvc. they're clean and easy to install. gaf freedom tpo is my fave. no glue, but i'm skeptical of it's longevity. of course coal tar pitch is the best, but as said cost, and lack of good installers has hurt this proven product. ive seen pitch roofs on chicago public schools that were 80+ years old and still in descent shape. now thats getting your moneys worth.:thumbup:

 

[jjshaggy]

You like the SA tpo's eh? Ive never installed them I bet they are pretty fast. Got to be damn expensive though. Ive used alot of GAF tpo and it seems ok, I dont care for thier glue though I think versico's is better.

from an installers standpoint i like the s/a tpo, but personally would'nt put it on my house or busniess if i had one. i'd use something with a longer/ proven track record. they do install very fast though, but one thing that kinda slowed us was we were doing 2 layer iso w/ olybond. which can take awhile to rise if not in direct sunlight. plus crickets and saddles. did 1000's of sq. of these cookie cutter jobs for a national fitness center chain. the other PITA was they run all conduit for the building under the roof systems so 1st layer iso had alot of cuts. dont know the price difference between s/a and smooth back, but probably could make up for it in labor costs. i agree verisco glue is nice a little thinner, easier to spread.

 

[jjshaggy]

They did what with the conduit! not metal deck then eh? We did a big warehouse that they ran the conduits on top also, except it was straight runs in the metal deck flues. This was a hot job and we made maps so if we ever reroof it we know where they are at. saws and conduits dont mix, you dont want to know what it costs when you shut down a production line down a day or so. :no: I would guess it might be close but we can spead glue down pretty fast. It would be interesting to compair the two on a cost basis. Ever installed a Rhino Bond system?

you had to see this to beleive it. miles of plastic conduit everywhere. wish i had pics to show u. 1st layer iso we cut to make level 2nd layer to make look level w/ roof line. we did 2nd job on metal deck mechanically attached tpo and had to cut into new roof cuz had screws in conduit. even tho we tried to mark where conduit was, but impossibe to not make mistake. so they went to pre cast concrete decks. hence the olybond. still was a pain in the ass. yes grumpy these were new construction. i supervised some subs for these jobs and they in in their many years of expereince had never seen anything like these roofs. no never installed rhino bond system. who is the manafacturer?

 

[jjshaggy]

ive heard guys talk about mars bars. is that from this system? i figured they weren't talking about candy bars.:laughing:

 

[jjshaggy]

I prefer roofing membranes and synthetic rubber roofing compounds for flat roofs.
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i said this on other replies on this thread i love my single ply too, as an installer, but do agree that coal tar pitch is the best roof. thing is almost nobody does them any more. cost, liability, and lack of knowledgble installers are making it a dinosaur. ive worked with alot of old timers on single ply jobs and theyre awesome til its time to start kicking out rolls, and god help me do any detail work. when i see that it keeps me motivated to not become a one sided roofer, cuz i dont want that to be me. who knows what it'll be like 20 years from now i'll probably have some young punk like myself saying the same sh--.