Replace Rotted Door Frame Threshold

To repair rotted door frame first remove rotted wood with a 5 in 1 or other sharp tool.

Replace rotted door frame threshold.

Measure the length width and thickness of the old threshold and have a replacement with a similar pro file on hand. The door threshold the kick plate below the door and the door jambs wrapping an exterior door. Remove the screws holding the metal threshold in place. Beneath some thresholds is a portion of the door frame known as the sub sill.

What makes the front door so vulnerable to wood rot. Remove the old door sill from beneath the door frame. 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. Wood rot occurs when there is a high level of water and a food source wood.

Know the parts that make up the exterior door threshold. Make sure you inspect the toe kick and casings as you replace the threshold. Apply bead of tri polymer caulk to joint between finished floor and new threshold. How to use epoxy on wood for repairs.

Prep with replacement at the ready photo by reena bammi. To remove and replace a door sill. Mix polyester wood filler or bondo wood filler and press it into the recess with a putty knife. The sill is beveled on one side to drain water away from the house.

Cut the rotten door sill into pieces using an oscillating tool or circular saw. Test fit new threshold in doorway. Thresholds come in wood and metal both of which come with a rubber gasket for sealing out the cold. Use reciprocating saw to cut the nails securing toekick.

Most exterior thresholds also have a sill beneath them. Click enlarge this image to view illustration labels. Position the old door sill on the new sill and trace around it. Build up toekick and subfloor with pressure treated lumber.

If the threshold is rotted the sill probably is too. How to replace a door threshold in 9 steps step 1. Measure and cut the replacement jamb to length. Remove the rotted jamb by tapping it away from the head jamb and cutting the nails.

Remove old threshold from doorway using hammer and reciprocating saw. That s why it s important to inspect your front door every year and repair rotted wood door bottom as quickly as possible. If they are rotting purchase new ones cut to the same measurements as the sill and install them at the same time. Then coat the rotted door frame area with wood hardener as shown.