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Old 12-18-2013, 07:12 AM   #16
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Tapcons not grabbing cinder block


IF they're cinder blocks, tapcons won't work,,, i'd probably use hardened conc nails & pl adhesive

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Old 12-18-2013, 08:56 AM   #17
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Tapcons not grabbing cinder block


The wood should not be attached directly out to the concrete.
You should be building a 2 X 4 wall out away from the block.

Some reasons why:
How would you install boxes and run the wiring?
There will be no thermal break.
They may rot due to moisture.
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Old 12-18-2013, 10:03 AM   #18
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Tapcons not grabbing cinder block


Quote:
Originally Posted by danpik View Post
Also, you need to make sure you are drilling straight into the hole and not moving the bit around as you drill.
I agree with danpik. Method of setting tapcons even into hollow block is important. First and foremost when drilling, make sure you do not let the bit walk around the hole. Clean the hole out of dust before inserting the anchor and when setting the anchor dont let it turn too fast or overtorque it.

Here are some other fastening options.
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Old 12-18-2013, 10:13 AM   #19
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Tapcons not grabbing cinder block


Quote:
Originally Posted by joecaption View Post
The wood should not be attached directly out to the concrete.
You should be building a 2 X 4 wall out away from the block.

Some reasons why:
How would you install boxes and run the wiring?
There will be no thermal break.
They may rot due to moisture.
+1 on all of this!

You only need about an inch or so between the back side of the 2x4 wall and the existing masonry wall.
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Old 12-18-2013, 01:28 PM   #20
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Tapcons not grabbing cinder block


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Originally Posted by nateshirk View Post
Why do threads go so far off track? Can I just get some good, solid ideas on how to secure some lumber to a block wall?
Substitue the "internet" for "Chinatown". It's just the way it is. You get what you pay for.
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Old 12-18-2013, 01:36 PM   #21
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Tapcons not grabbing cinder block


As I already said, the moisture is taken care of. I'm not asking how to build a wall. I cannot build it thick enough to frame a normal 2x4 wall. 2" Foam is going down first, except under the wood. A 1/2 inch piece of foam is going under the 2x3, so it all sits flush.

I'm drilling straight through the block. Nothing should be sitting in the hole. I'm not reeming it. I take the tapcon and screw it in, not fast or slow. It just spins straight through, and never even tries to grab the block.
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Old 12-18-2013, 01:45 PM   #22
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Tapcons not grabbing cinder block


I'd use this:
http://www.clarkdietrich.com/product...urring-channel

And attach with these:
http://www.fastenal.com/web/products/details/50505
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Old 12-18-2013, 01:45 PM   #23
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Tapcons not grabbing cinder block


A 3/16" tapcon should be using a 5/32" bit for its hole. Verify your bit is 5/32
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Old 12-18-2013, 01:49 PM   #24
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Tapcons not grabbing cinder block


Quote:
Originally Posted by nateshirk View Post

I'm drilling straight through the block. Nothing should be sitting in the hole. I'm not reeming it. I take the tapcon and screw it in, not fast or slow. It just spins straight through, and never even tries to grab the block.
Either your block is exceptionally brittle and crumbling as you are drilling, your bit is bent causing it to open the hole wider than the bit itself or you aren't holding the drill as steady as you thought. Otherwise, your hole would be okay.

Just out of curiosity, what kind of drill and bit are you using?
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Old 12-18-2013, 03:52 PM   #25
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Tapcons not grabbing cinder block


Forget Tapcons in "cinder" block, ain't happening with any degree of comfort. The hammer type ones Anti showed sometimes work. I'd try the double cinch expansion or a toggle, forget sleeve anchors and powder actuated fasteners too. Cinder block is the worst material to fasten too, been down that road.
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Old 12-18-2013, 06:48 PM   #26
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Tapcons not grabbing cinder block


GUYS !!!!!!!!!!!! they're cinder ' according to the op,,, not even as strong as conc blocks,,, maybe not all that many have ever seen a cinder block IF the op needs, use a toggle - use a conc nail & pl, use the conc floor & brace the other end against a top place nailed to the ceiling joists,,, hasn't enough bee said by now ? somehow i think most of us wouldda had the *^$#@%*)^&$# 2c4's in already
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Old 12-20-2013, 12:28 PM   #27
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Tapcons not grabbing cinder block


You may be able to use the dot and dab method with insulated plasterboard.

http://www.ecotherm.co.uk/our_produc...eco-liner.aspx
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Old 12-27-2013, 12:22 PM   #28
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Tapcons not grabbing cinder block


Scroll up to the pictures posted above. See the expansion anchors. Purchase some. They are excellent for cinder blocks.
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Old 12-27-2013, 01:23 PM   #29
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Tapcons not grabbing cinder block


Unfortunately, few people know what a "cinder block" is and they think any block of concrete with cores (1, 2 or 3) is a cinder block, but by code it is a "concrete block" and may use actual cinders (waste product or natural cinders). The most common cinders are only found near/around old railroad lines and near some older industrial plants. - They are highly variable waste products with different properties, so only trial and error would be the best method. Real "cinder block" from 40 miles away may be totally different.

Actual concrete block are much different and the better ones are made from naturally created lightweight aggregate and are more costly and are not used for low cost uses. Natural cinders are sometimes used in architectural block and are very pricy and have good properties and uniformity.

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Old 12-27-2013, 06:04 PM   #30
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Tapcons not grabbing cinder block


If you have screws that just spin in the hole, I find this works for me, and you can bury the screw head in the wood. Cut a length of 12/2 WG romax electrical wire about 6 inches or so long. Strip the outside insulation where you have three individual wires but leave the plastic on the individual wires. Insert one wire into the hole you drilled and bend back about 1/2 inch of the wire outside of the hole so it won't fall through. Just screw the screw in and it will hold. It has always worked for me.

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