patio door installation question - DIY Chatroom

gintaras · 10-19-2009, 02:41 PM

Does the patio door sit on the subfloor or on top of the finished floor?
I am asking because the previous owners installed it on top of the finished floor, which was really just an extension of the deck, so the patio door was installed on top of a deck board.

I have since built a new deck, lower than the level of the 3-seasons room, and have removed the rotted deck board that the door was installed on.

So the question is, do I install a new deck board to finish the floor in the 3 seasons room, and the patio door on top of that?
OR
Do I install the patio door on top of the subfloor and the install the deck board floor piece to finish up the installation?

On deck bord?
On subfloor?

old door

rough opening, still needs to be framed in, you can see where I removed the deck board, exposing the subflooring.

gintaras · 10-19-2009, 11:52 PM

got my answer after looking at the bottom of the new Pella 450 series.. the deck board used as flooring in the patio will butt up against the bottom of the door nicely, giving it a nice finished look instead of having the door protrude above the flooring.