You will need to use an air chisel to remove some of the concrete around the nail head.
Removing nails from concrete wall.
You can pound the nails into the concrete block wall until they are flush with that wall.
When you pull out nails depending on the quality of the concrete you can pull out large divots of concrete.
There are two types of nails that can be hard to remove.
Occasionally you may need to wipe away construction adhesive or separate two objects bonded with it such as two boards two bricks etc.
If it is embedded the claw can dig into the wood.
This doesn t happen with a concrete wall.
Concrete nails are heavy duty rigid and wedge shaped.
There are a few ways to remove construction adhesive after you bonded two materials together.
Often when the board is removed that a concrete nail is in the nail will strip through the board and remain behind in the concrete.
You only have to place the claw on your hammer under the nail head and pry it up.
Then fill the holes with caulking specially designed for concrete and masonry walls.
Anything you apply on the interior of the wall is on the negative pressure side of the wall and thus won t stand up to hydraulic pressure of any water wanting to infiltrate your home.
Removing a regular galvanized nail from wood is a relatively easy process.
The best solution is to rent a very large crowbar and remove the nails.
Most adhesives and caulks can be scraped off when they are softened.
I would also skip waterproofing the inside of the walls.
Removing concrete nails can be a frustrating task.
Because the hammer claw grabs the nail s shank this method usually works even when the nail head has broken off.
When you set out to remove paint from concrete the first thing to do is clean the surface of the concrete thoroughly.
You develop terrific pulling power enough to extract even those tough cement coated or galvanized nails without straining your hammer handle or arm.
The problem here is that the wall will not be airtight or watertight.