Flat roof question

I've never seen the heat sink your talking about on TPO or PVC, only on EPDM. That doesnt mean it dont happen, just mean I never seen it. But your right, heat will speed up the aging of the material. Most TPO products are tested at some outrageous temp f>>>

Ever noticed the first place to thaw on a frosty roof is directly over the fasteners?

That's because the heat transfers through the fastener faster than it transfers through the insulation.

First place to prematurely age on most membrane roofs is direc>>>

It's 100% adhered. TPO/ISO. No ballast! And this is ok? I primarily use Firestone so that is most of my TPO knowledge but please tell me if this would be acceptable by any manufacturers specs.

Mike your knowledge on flat far supercedes mine so I wont ar>>>

Mike H wrote: [quote]Huh???

... and usually done to eliminate the heat sink created by fasteners.

...

can you expound on that? Sounds interesting. :)>>>

Huh???

Iso gets adhered all the time. Although not that often to metal decks, particularly on high rise buildings where wind zone requirements often necessitate mechanical fastening, it is still done, and usually done to eliminate the heat sink created>>>

You can yes, thats the fully adheared method. Personally I like mech fastened better. However, my question is the ISO to the metal decking.>>>

Hi guys, just found my way in here.

Please excuse my ignorance but what's the deal? Are you not suppose to adhere tpo to iso?>>>

It's just outside DC in Reston. Fed building. Friend of mine (carpenter) has been contracted to build new air conditioning boxes, rebuild parapets, etc. He called and asked if the roofers are doing it right. They also removed 8 stories of windows on the>>>

I have done a flece back Sarnafill we had to prime coat the iso let it dry then glue and put the sheet in wet. I wood also like to see a 3500 sq 8 story building.:unsure:>>>

I'd just like to see an eight story 3500 sq bldg>>>