You can pound the nails into the concrete block wall until they are flush with that wall.
Remove nails from concrete wall.
We simply took an angle grinder and ground them off flush.
If you are planning on studding the wall anyway my vote would be to do nothing but to use an angle grinder to remove any that might be in the way of a stud.
You can rent 4 angle grinders.
You only have to.
First loosen the concrete nail by bending the nail from side to side until it lets go.
Repeat striking the nail a little at a time alternating sides until the concrete lets go of the nail or the.
The problem here is that the wall will not be airtight or watertight.
I used a diamond blade to slice through a 4 cast iron drain pipe once it didn t seem to hurt the thing at all.
Then fill the holes with caulking specially designed for concrete and masonry walls.
If they are cut concrete nails they will break off instead of bend.
You ll need to soften the adhesive or caulk.
Use carefully aimed hammer strikes to drive the nail into the concrete wall so you don t miss and bend the nail or strike the wall and damage it.
To do this heat the adhesive with an electric heat gun or blow dryer.
To do this use the hammer to strike the nail from.
Drive the masonry nail into the concrete wall with the hammer.
Alternatively you could coat the adhesive with petroleum jelly or mineral spirits for at least 12 hours to a day.
Just lightly glide the grinder on the concrete into the nail until you are through it then a couple of passes to make sure it s flush.
Chisel around nail step 1.
They don t penetrate the wall and will never be a leak hazard.
I have an old diamond tile cutting disk on my grinder and it cuts nails or anything else great.
The best solution is to rent a very large crowbar and remove the nails.
Continue striking the hammer until the nail is driven in to where you want it.
How to remove concrete nails.