One of my external door sill weather-strip is slightly warped near the center producing an area where cold air can flow in.
The door sweep appears to make good contact on the left and right sides of the door so air flows through in the middle.
What is the optimal way to repair this type of draft? (both economically and from a heat retention standpoint)
Should I use an adhesive type door weather-strip (http://www.amazon.com/Duck-1302370-Self-Adhesive-Insulating-1-75-Inch/dp/B002GKC2TY/ref=sr_1_1?ie=UTF8&qid=1420496967&sr=8-1&keywords=adhesive+draft+stopper)
or should I find a way to replace the door sill weather-strip? What would the work entail to access and replace the sill weather-strip?