Not sure if posted yet, but I figure a good thing we can do as realtors is help provide support to weatherproofing ones home. I have an option for anyone who uses our service, that if we sell your home, we'll also help with weatherproofing your home. It's something I like to do to make it even easier on the homeowner.
I always ensure homes are weather proofed before selling them regardless of if the buyer wants it or not. They have to be up-to-code in my area and this includes weatherproofing.