Replace Rotted Door Frame Threshold

Remove the screws holding the metal threshold in place.

Replace rotted door frame threshold. Thresholds come in wood and metal both of which come with a rubber gasket for sealing out the cold. Remove the old door sill from beneath the door frame. The new threshold should have a similar profile to your old threshold and be 1 to 2 inches longer than the length of the doorway so that you can cut it for an exact fit. Click enlarge this image to view illustration labels.

Measure from the threshold to the bottom of the door stop. Most exterior thresholds also have a sill beneath them. My techniques show you how to adjust and seal up your thre. If your threshold is in rough shape replace it.

The sill is beveled on one side to drain water away from the house. Position the old door sill on the new sill and trace. Remove the rotted jamb by tapping it away from the head jamb and cutting the nails. Mix polyester wood filler or bondo wood filler and press it into the recess with a putty knife.

Prep with replacement at the ready photo by reena bammi. If the threshold is rotted the sill probably is too. In this video i explain in detail how to repair a rotten door threshold with fiberglass and bondo. To remove and replace a door sill.

Pull the rubber gasket out of the grooves on the metal threshold. It helps to keep the elements out and provides a seal as well as a place to step as you enter the home. The door sill or threshold is the bottom portion of your exterior door frame. Know the parts that make up the exterior door threshold.

How to use epoxy on wood for repairs. Use a scrap of the door jamb to scribe the threshold angle transfer the angle to the door stop on the replacement jamb and notch the jamb. Measure the length width and thickness of the old threshold and have a replacement with a similar pro file on. Then coat the rotted door frame area with wood hardener as shown.

Measure and cut the replacement jamb to length. How to replace a door threshold in 9 steps step 1. To repair rotted door frame first remove rotted wood with a 5 in 1 or other sharp tool. Measure between the outside edges of the door casing.