Why did concrete screws feel loose when installed in a brick wall?
Tapconing into a mortar joint is to be avoided.
See the discussion here.
And the one here about how 3/16&quot; are garbage. Use 1/4&quot;.


If the Tapcon goes into a mortar joint it's pull out strength will depend on the compressive PSI of the mortar and the depth of the mortar joint in combination with the length &amp; diameter of the Tapcon.
– forums.jlconline.com