A 2x4 needs to be fastened to concrete.
Using wall plugs in concrete.
Using your fingers push the wall plug into the pilot hole.
If possible purchase wall plug and screw combos to ensure they will fit.
The usual method is to drill a hole of the correct size and then insert a plastic wall plug to screw into.
In this video i show how to use wall plugs and how to select the right size wall plug screw and drill bit.
Thanks to any responders.
However because the breeze block is quite soft it works much better with wall plugs.
Drill a hole in the wall for each anchor.
Drill a pilot hole at the proper location with a hammer drill and masonry bit to the depth your screw will penetrate.
An awl has the advantage of creating less drywall dust.
It should fit snugly but drive in easily with a hammer.
Tap the plastic anchor into the hole.
The point of the concrete screws is they just need a pilot hole and don t need a wall plug.
Use an electric drill for concrete or wood walls and a drill or an awl for drywall.
Wall plugs are very versatile and using them you can add fixings for thermalite blocks brickwork stone walls or concrete providing the masonry material is in good condition.
Insert the plug into the pilot hole.
I provide a wall plug colour chart for quick iden.
Adding the 1 1 2 of the 2x4 plus a minimum of 1 embedment 2 1 2.
Concrete anchors types vary and include concrete screws hammer set anchors lag shields lead screw anchors plastic wall plugs anchor bolts and more.
Buy a set of universal wall plugs if your item weighs less than 15 lbs.
If it does the universal version is likely to work well.
The 2x4 is 1 1 2 thick.
Concrete concrete block mortar brick tile and stone.
Can you use wall plugs with concrete screws or are they only meant for being used with woodscrews.
After pushing it into the wall as far as possible with your fingers use a hammer to carefully push it in further.
This would be the minimum length of screw that can be used.
Jonniejoejonson 28 jun 2020.
When using a drill select a bit with a diameter that is slightly smaller than the diameter of the wall anchor for a tight fit.