I had the same problem and used the exact threshold that is shown in the links. Got my from Cabelas years ago and now I see it in Harbor freight for alot cheaper. Anyways it works and have not had any water intrusion since I put it down. I also created a little caulk dam at the ends of the...
I do not post much but figured I might show this. I hope the picture shows seens I am a little computer challenged. This is my garage with a Bendpack HD-9XW lift. I have a GMC crew cab long bed 3500 parked under the lift with a 1966 GTO above. Plenty of room to pull the truck in with mirrors...