Water becomes trapped under the bottom of the.
Sliding door sill rotting out.
If the threshold is rotted the sill probably is too.
Water penetrating into the sill initiates rot.
The rot typically occurs on the vertical stiles of the door on the left and right where the end.
They re typically built from untreated pine and then painted to resist the elements.
Remove the screws holding the metal threshold in place.
Wood rot problem with patio doors are more often due to the ledger board not being installed properly.
Most exterior thresholds also have a sill beneath them.
The ledger board is used to attach a deck to the house.
Exterior sliding doors usually incur rot due to improper sealing of the door along the bottom edge.
A rotten sill plate is a common occurrence in old houses and a big problem.
The sill is the piece of wood closest to the ground either on a foundation or piers and is usually a timber sized board.
3 6 3 8 4 6 4 8 and so on.
Remove the old door sill from beneath the door frame.
Other clues about the floor damage included discolored flooring mold along the wall and lots of opportunity for water leaks with washer toilet and water heater.
To remove and replace a door sill.
Short slide show video summary 2 min of how to replace a rotten wooden door sill.
Stepping through the floor was not the first hint that it had rotted out but it sure moved the floor repair up on the priority list for a house with plenty of remodel projects to do.
After a few years the sill deteriorates to the point of no return.
Pull the rubber gasket out of the grooves on the metal threshold.
The sill is beveled on one side to drain water away from the house.
The bottoms of painted balusters are a prime spot for rotting.
It fits tightly between wall studs and under the jambs and casing so it has to be cut before it can be removed.
Sliding patio doors made from wood can have water problems similar to front doors when it comes to splash back from the deck or patio outside these doors.