How To Seal An External Door That Is Leaking?

Water leaks through a door can cause structural damage, mold growth, and other issues in a home. To fix a leaking front door, follow these steps:

1. Stop rain from flowing under the door. Have a helper with you and spray a water hose against the door where it meets the jam for 30 minutes to see if any water leaks in.
2. Install weatherstripping underneath the door. One of the easiest and most effective ways to stop water from leaking indoors through the bottom of the door is by installing weatherstripping underneath it.
3. If storms cause your interior door frame to start leaking water, address this problem sooner rather than later. Resolving the leak will protect your home from water.
4. If there is a large gap under your door, water can leak in through here, especially after a heavy downpour. This can be mitigated by installing weather stripping around the door.
5. If no storm door is installed, ensure a drip cap is installed above the door (or a new door with brickmoulding should help).
6. Bend up an aluminum sill pan from aluminum that covers the concrete below the door and extends up the door.
7. Attach a rubber seal along the door. A good option for a leaking door is to divert the water with a DOORBRIM rain diverter.
8. A common cause of water leaking through your door is if the frame has become rotted or warped. To fix this, put caulking backer rod (foam cord) into the back of the weatherstripping to “fatten” it up so it seals well against the water.