The gap around a door should be even along all four door edges. If a door has an open gap above its top edge, it will allow air drafts inside and allow interior air to escape. This can waste energy and become costly until you repair it.
Do you need corner seals on your doors?
Frequently Asked Questions
Which is the best seal for exterior doors?
V-seal weatheringstrip or tension seal is easy to install and gives a good seal for exterior doors as well as interior doors when needed. Silicone, tubular rubber or vinyl weather stripping does an excellent job of keeping air in or out and is best at the base and bottom of a door that gapes.