You can pound the nails into the concrete block wall until they are flush with that wall.
Removing nails from concrete wall.
When you pull out nails depending on the quality of the concrete you can pull out large divots of concrete.
The best solution is to rent a very large crowbar and remove the nails.
They don t penetrate the wall and will never be a leak hazard.
You develop terrific pulling power enough to extract even those tough cement coated or galvanized nails without straining your hammer handle or arm.
Chisel around nail removing a regular galvanized nail from wood is a relatively easy process.
To do this heat the adhesive with an electric heat gun or blow dryer.
Ram the claw into the nail shank as close as possible to the wood and rock it sideways photo 1.
Alternatively you could coat the adhesive with petroleum jelly or mineral spirits for at least 12 hours to a day.
You ll need to soften the adhesive or caulk.
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.
Chisel around nail step 1.
Then fill the holes with caulking specially designed for concrete and masonry walls.
To do this use the hammer to strike the nail from.
How to remove concrete nails.
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.