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Old 02-24-2012, 11:19 PM   #1
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How to secure door threshold to concrete slab?


I sometimes use those blue plastic coated bolts that you drive into holes drilled into the concrete. But they are too large, and I don't want those bolt heads sticking out of the threshold.
I heard there are nails that can be drive into concrete, are they available at hardware stores? Also if I drill a hole, can a regular screw be driven in there and hold?
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Old 02-24-2012, 11:31 PM   #2
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How to secure door threshold to concrete slab?


Reguler screw will not hold.
More info is needed. Tap Con screws are avalible in at least 4 differant sizes and will work fine with any threshold I've ever worked on.
Tap Cons are screws not bolts. Are you using flat head Tap Cons?
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Old 02-25-2012, 02:07 AM   #3
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How to secure door threshold to concrete slab?


Ditto on using flat head Tapcon screws.
http://www.concretescrews.com/
The screw head can be counter bored ¼” and covered with a plug.

For installing a ¾” thick threshold a common Tapcon length is 1-3/4” or 2-1/4”.

Caution on using an extra long screw. They will break, I’ve done it.
Tapcon says the screw embedment s/b a minimum of 1”, maximum of 1-3/4”
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Old 02-25-2012, 06:24 AM   #4
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How to secure door threshold to concrete slab?


Is this an exterior threshold?

If interior---use PL premium---drilling holes into the concrete and pounding in wood dowels will allow you to use regular wood screws---but I would not use that for an exterior install--water will eventually soften the wood plugs.
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Old 02-25-2012, 11:23 AM   #5
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How to secure door threshold to concrete slab?


I thought those blue bolts were Tap con. I better double check. I always tightened them down with a small crescent wrench.
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Old 02-25-2012, 11:44 AM   #6
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How to secure door threshold to concrete slab?


Yes sounds like they are, however there are different kinds, have a look to find ones that will set flush with the threshold.
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Old 02-25-2012, 10:24 PM   #7
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How to secure door threshold to concrete slab?


I got some tap cons in screw configuration. Thanks guys.
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Old 02-25-2012, 10:29 PM   #8
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How to secure door threshold to concrete slab?


what kind of threshold is it? wood/metal?
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Old 02-25-2012, 10:30 PM   #9
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How to secure door threshold to concrete slab?


metal
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