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Small Cabin Forum / Off Topic / Im looking for the strongest concrete screws
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paulmars
Member
# Posted: 10 Sep 2014 07:08pm
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for outdoor humid, hot central florida. Strong structural concrete screws.

Im attaching simposon H10S and LGT2 straps to my rafters and cinder block walls. Im using simpson screws to attach to the rafters, however simpson makes no outdoor concrete screws and has no suggestions. So, Im looking for the best reasonably priced outdoor concrete screws for use in central florida.

thanks,
pa?

Shadyacres
Member
# Posted: 10 Sep 2014 08:11pm
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I think tapcons would be a good choice

PatrickH
Member
# Posted: 10 Sep 2014 09:18pm
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This is what simpson recommends URL

PatrickH
Member
# Posted: 10 Sep 2014 09:20pm
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Heres some more related info that may be helpful to you URL

paulmars
Member
# Posted: 10 Sep 2014 09:36pm
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Warning: Industry studies show that hardened fasteners can experience performance problems in wet or corrosive environments. Accordingly, use these products in dry, interior and non-corrosive environments only.

bldginsp
Member
# Posted: 10 Sep 2014 10:26pm
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Screws need to be hardened to go into concrete, but any high-carbon fastener will have the corrosion problem in a wet environment, so you have an inherent conflict. How about stainless steel? It may have the strength to make it into the concrete and then won't corrode. Not an approved solution, but maybe better than nothing

bldginsp
Member
# Posted: 10 Sep 2014 10:31pm
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Read this- I googled 'exterior concrete screws'

http://www.confast.com/articles/concrete-anchors-for-outdoor-use.aspx

Shadyacres
Member
# Posted: 10 Sep 2014 10:33pm
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They make stainless steel tapcons

PatrickH
Member
# Posted: 11 Sep 2014 07:14am
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Yes,simpson also offered a stainless version, and there was an approval for use in Florida in one on one of the pages

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