We're looking at installing an alarm system and including door access switches on all exterior doors including 3 sliding glass doors into the screened porch and window opening sensors on all windows. We're debating on glass breakage sensors as the windows are basically too small to get thru without opening them, BUT if someone were to break the glass out of a sliding glass door WITHOUT opening the sliding glass door, that wouldn't trip a door opening sensor (as far as we know).
Our question is if that's a common occurance as we hear many stories of opening sliding glass doors but haven't seen much about someone smashing a 4-foot wide X 7-foot tall piece of heavy glass to get into a house. We already have motion sensing lights behind the porch but didn't really care to add +$400 of glass breakage sensors that don't do much. Plus we have had issues (at my girlfriend's house) with glass breakage sensors tripping when a toilet seat gets dropped and even once when I blew my nose directly under one.
Any advice would be greatly appreciated!