The old, loose mortar had to be removed from around the stones and replaced.
His fingers gripped the loose mortar, and he stiffened into the shadows which covered the wall.
"You can run your finger along a picture frame and find loose mortar and debris."
Using a car key, he picked loose mortar from between the granite blocks of the church.
Distracted, she knocked loose mortar from her trowel, glanced up.
First rake out all loose mortar to a depth of about 12mm.
The cape chisel has a thicker blade tapering to a point; it is used to dig loose mortar out of the joints.
The banks have since probed the occasional patch of loose mortar between the legal bricks.
There was a whisper, then a steady pebble-fall of loose mortar.
He reached the wall, brushed it with his hands, began to feel for loose mortar.