You ll need to soften the adhesive or caulk.
Removing nails from concrete wall.
You only have to.
First loosen the concrete nail by bending the nail from side to side until it lets go.
When you pull out nails depending on the quality of the concrete you can pull out large divots of concrete.
Ram the claw into the nail shank as close as possible to the wood and rock it sideways photo 1.
To do this heat the adhesive with an electric heat gun or blow dryer.
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.
The problem here is that the wall will not be airtight or watertight.
Then repeat the process pulling the nail about 1 2 in.
Then fill the holes with caulking specially designed for concrete and masonry walls.
To do this use the hammer to strike the nail from.
They don t penetrate the wall and will never be a leak hazard.
You can pound the nails into the concrete block wall until they are flush with that wall.
Alternatively you could coat the adhesive with petroleum jelly or mineral spirits for at least 12 hours to a day.
Chisel around nail step 1.
You develop terrific pulling power enough to extract even those tough cement coated or galvanized nails without straining your hammer handle or arm.
How to remove concrete nails.