1,481 views ·
15 replies
1k views
15 replies
I've found something …
If the square washer is loose, it's no longer useful, but contrary to what others say, it's possible to get sight on the other side of the wall. You might not know what the wall stands on; it could be sloping rock and a form of retention between the wall and rock during the construction of the house.
You can loosen the nuts, they are locked against each other, and check the bolt to see if it is loose. Do not hit it, as this could potentially create a large hole in the outer plaster. It is best to use a grinder to cut it a bit inside the wall on the inside and plaster/fill the resulting hole.

