Wood frame around sliding glass door looks charred
This is so strange. I noticed a dark area on the stained wood frame around the bottom edge our sliding glass door. This is on the inside, the outside is metal. This door is probably 15 years old at the most. It is charred! We checked for any wiring around the area but there is none. This sliding door opens to our aluminum deck. It does get afternoon sun but so do all our sliding glass doors. It is so strange. Has anyone heard of this happening before? The wood appears charred all the way through and you can see that the stain had melted too. It is a mystery. It is very localized only on 2/3 of the frame, again at the bottom only.