On 9/20/2014 12:24 PM, Oren wrote:
On Fri, 19 Sep 2014 16:26:42 +0200, nestork
wrote:


I think the point that people seem to be missing here is that Tapcon
screws are ordinary (perhaps hardened) stell. They rust. They have a
coating on them that would help prevent rusting, but eventually, they'll
rust.

The OP can use Tapcon screws to hold the toilet floor flange down, but
if he ever needs to replace that floor flange, and isn't able to get
those old rusted screws out of the concrete, he'll have to grind them
off flush with the concrete, and drill new holes in his floor flange to
hold it down.

I say it's smarter to use lead anchors and stainless steel screws to
avoid that situation in the first place.

_Screws that Practically Drive Themselves_

http://www.youtube.com/watch?v=tWFf4IOuAnI&list=PL1szv0FP8dUthzyAv88t3sQz hxFLWMXRF

GRK PHEINOX Stainless Steel Screws:

http://www.youtube.com/watch?v=hJcm84TQoww&index=21&list=UUHWX8yVgskKy83r xBzry3-Q

GRK Caliburn Concrete Screws:

http://www.youtube.com/watch?v=VnZPvxtHpSA&list=UUHWX8yVgskKy83rxBzry3-Q

GRK Home Page:

http://www.grkfasteners.com/index.php/en/

(Made in Canada)

It's amazing how much improvements can still be made to an ordinary
ho-hum item like a screw that we take for granted. Thanks for the links.

Now, I wish I didn't have to rent a hammer drill to make the pilot
holes. They rent for $20 for four hours, or $24 for 24 hours. I need
four holes for the closet flange, two to hang an extension ladder off a
garage wall, and 2-6 more for new garage shelving. I'll have to plan
everything carefully so I get everything done with a single rental.

R1