Expert: James - 2/10/2009

Question
I am trying to change out my storm door lock and cannot figure out how to remove the old lock.  I can't find any screw to release the lock mechanism so I can slip the old lockset out of the door.

Answer
Hello Andrew,

Some storm doors have one type of lock and others have different ones.

One style has what's called a profile cylinder which operates a mortise lock.  The cylinder is installed so that the key is inserted with the cuts facing down.  Open the door and you should see 3 screws, one slightly different looking than the others.  One is a set screw that holds the cylinder in place.  It should be in line with the center of the cylinder which is about 3/4 of the way from the top of the plate on the door edge.  Remove that screw, it should be about 3" long, maybe slightly different but longer than 1/4" which would be the length of the other screws.  Once that is out, turn the thumbturn piece as you pull the cylinder.  I can't remember the exact spot but you have to line up the cam on the cylinder with a hole before it can slide out so turning the thumbturn will eventually line that up.

If you have a different type of lock please attach photos.

James
www.jmlock.com