How Do I Add a Patio Doorsill Extension?

How Do I Add a Patio Doorsill Extension? thumbnail
A patio door may need to have a doorsill extension added.

According to Merriam Webster dictionary, a patio is "an inner court open to the sky." It is a Spanish word, and its first recorded use was in 1828. The use of patios spread around the world. To access the patio, large, often sliding doors that reach nearly from floor to the ceiling became common. Does this Spark an idea?

Things You'll Need

  • Silicon sealant
  • Rag
  • Straight edge knife
  • 1-inch screws
  • Screw gun
  • Gasket
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Instructions

    • 1

      Place the door on its side on a clean surface. Make sure that the exterior or the side of the door that will be facing out when installed is up, and the interior side is down.

    • 2

      Squeeze a line or bead of silicon sealant to the channels for the sill.

    • 3

      Slip the ridge of the sill extension into the channel that is closest to the top of the door.

    • 4

      Slide the sill down the door until it is in the position, centered on the bottom of the door. Wipe off any excess sealant with a rag.

    • 5

      Trim 1 1/4 inches from either ends of the sill spacer with a straight edge knife.

    • 6

      Add sealant to the outer ridge of the sill spacer.

    • 7

      Press the sill spacer to the bottom of the door and secure it with screws. Apply sealant to the gap between the sill extension and the sill. Clean off any excess sealant.

    • 8

      Apply sealant along the outside of the door in the groove of the jamb cover. Press the gasket to either end of the sill extension.

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References

  • Photo Credit Waterfront Patio image by wabkmiami from Fotolia.com

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