The threshold at the base of an exterior door takes a beating with constant foot traffic and weathering. As it ages or—worse—rots, it looks bad and ceases to do an effective job of sealing out the weather. That’s when it’s time to replace it.
The following instructions will guide you through replacing a wooden threshold:
1) Remove the damaged threshold. If necessary, cut it in two and pry out the two pieces. Be careful not to cut or pry against your finish flooring.
2) Mark and cut the replacement threshold to fit. You may be able to use the two sections of the old threshold to help measure and mark the new threshold—if you do, be sure to allow for the width of the saw cut you made during removal.
3) Cut the replacement threshold. If you’re installing a metal one, use tin snips and a hacksaw or a saber saw with a metal-cutting blade to make the cuts.
4) Brush or sweep the area where the threshold will go.
5) Set the new threshold into position and test it for fit. Temporarily remove it and apply silicone caulk to seal it to the floor. Replace it and attach it to the floor with screws, countersinking their heads (for a metal threshold, be sure to follow the manufacturer’s directions).
6) If you’re installing a metal threshold and it includes a rubber gasket, cut this to length and install it too.
