Drilling into Foundation Blocks

Old 12-30-13, 12:48 PM
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Drilling into Foundation Blocks


House built in 1955. Basement sheetrock is mounted to 1x2 wood strips that are both glued and nailed to the foundation blocks.

Had some water damage from a storm (power cut - no sump pump power) and cut bottom 2'-6" of sheetrock out. The wood strips are exposed and the glue has given way so they are not attached to blocks and not secure.

I am thinking of drilling a pilot hole through the wood strips and into the blocks and using those blue masonry screws (with caulk) to reattach the strips to the blocks.

Is this a good idea? Are there any dangers of damaging the blocks? Is there a better method?

Any feedback is appreciated.


Old 12-30-13, 10:36 PM
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What you really need is a powder actuated tool to "shoot" the wood to the wall.
Powder Actuated Tools & Accessories at The Home Depot

The screws you are talking about are Tapcons. Be sure to use the correct bit. You can buy the packages with the bit included..
Old 12-31-13, 01:13 AM
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think that would work ok IF a 2 x 4 but, for furring strips, wouldn't most loads shoot nails right thru the strips ?

I'd pick pl adhesive, 2# hammer, & conc nails - best !
Old 12-31-13, 04:40 AM
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I'm not fond of putting holes in a below ground foundation! Is it feasible to put adhesive behind the furring strips and then use some sort of weight to hold tight until the adhesive dries. Ideally, you'd have a stud wall erected an inch or so in front of the foundation wall.
Old 12-31-13, 06:41 AM
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I'm with marksr on this one.
Never should have been done that way.
No way to properly insulate, run wires, attach anything to it, done the way it is.

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