Sleeve Anchors for Concrete Block
Fastening heavy items to concrete block is simple if you use the right tools and
fasteners. Where most people mess up is in thinking they can use plastic
anchors. Uh, no. At the very least you should use a lag shield,
but even then, you can use that type of anchor
only when mounting to one of the three
solid sections of the block.
Sleeve anchors are a better option
because they work in the solid and
hollow sections of the block, as well
as the mortar joints. Here are two
important tips when you're installing
1. Leaving drilling dust in the hole will reduce the fastener's holding power. So
remove it with a vacuum or blower. A baby's ear syringe (about $5 at any
drugstore) works great for this (keep one in your toolbox). Just shove it into the
hole and puff out the dust.
2. Protect the bolt threads by unscrewing the nut until it extends slightly past
the bolt threads. Then drive it home with light hammer blows.