Fasteners for EPDM

[Chad Fabry]

Does anyone know who makes these fasteners?

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[Stephen Lagueux]

I've seen those type of fasteners where a spike is welded to the steel deck to hold down foam pads. To see them through the membrane kind of defeats its purpose in the first place.

[Chad Fabry]

If anyone cares- I spent a couple hours with Google Images searches using every imaginable term and finally came across a patent drawing from Firestone dated 1987.

I called Firestone and nobody there recalled the product but one person remembered that Carlisle had something like it. I called Carlisle and they discontinued the product in the early 1990's.

The tech guy thought they were called button cap fasteners. They work like a clothing snap with the membrane being your shirt-tail caught between the halves.

The first half screws to the deck. It's shaped like a round dovetail. The exposed portion of the fastener has articulating fingers that close around the dovetail as one pushes down. When fully seated, the fingers snap permanently into position.

Pardon the random search terms for future inspectors; surface mount epdm fasteners, membrane fasteners, mechanically fastened mebrane.

[Marc]

So this fastener doesn't actually pierce the membrane? Just pinches it like the shirt holder or dress pants holder in the store?

Marc

[Stephen Lagueux]

Just found this link on mechanical roof fasteners.

looks pretty much like the picture, made from Firestone Tire and rubber Co.

http://www.google.com/patents/EP0276708B1?cl=en