Replace Rotted Door Frame Threshold

To remove and replace a door sill.

Replace rotted door frame threshold.

Pull the rubber gasket out of the grooves on the metal threshold. What makes the front door so vulnerable to wood rot. Cut the rotten door sill into pieces using an oscillating tool or circular saw. Mix polyester wood filler or bondo wood filler and press it into the recess with a putty knife.

Remove the rotted jamb by tapping it away from the head jamb and cutting the nails. To repair rotted door frame first remove rotted wood with a 5 in 1 or other sharp tool. Use reciprocating saw to cut the nails securing toekick. Build up toekick and subfloor with pressure treated lumber.

Position the old door sill on the new sill and trace around it. Apply bead of tri polymer caulk to joint between finished floor and new threshold. If your threshold is in rough shape replace it. Remove the screws holding the metal threshold in place.

Remove the old door sill from beneath the door frame. How to use epoxy on wood for repairs. Test fit new threshold in doorway. Beneath some thresholds is a portion of the door frame known as the sub sill.

If they are rotting purchase new ones cut to the same measurements as the sill and install them at the same time. Make sure you inspect the toe kick and casings as you replace the threshold. Then coat the rotted door frame area with wood hardener as shown. Thresholds come in wood and metal both of which come with a rubber gasket for sealing out the cold.

Prep with replacement at the ready photo by reena bammi. That s why it s important to inspect your front door every year and repair rotted wood door bottom as quickly as possible. Remove old threshold from doorway using hammer and reciprocating saw. How to replace a door threshold in 9 steps step 1.

Measure from the threshold to the bottom of the door stop. Measure the length width and thickness of the old threshold and have a replacement with a similar pro file on hand. Click enlarge this image to view illustration labels. Wood rot occurs when there is a high level of water and a food source wood.

Most exterior thresholds also have a sill beneath them. The sill is beveled on one side to drain water away from the house. Know the parts that make up the exterior door threshold. Measure and cut the replacement jamb to length.