# How do I lay hardwood over a transition in a room that is not level?

We are going to be laying hardwood in our entire upper floor. The subfloor between two of the rooms is on a bit of a slope. What's the best way to lay the hardwood over this transition. We are going to be laying it longways through the transition since that is the direction perpendicular to the floor joists. Would it be best to run the hardwood up to the transition and put a board going across at the turning point and make a transition? Fixing the subfloor isn't really an option at this point.

Rough Description: The transition is a doorway that is 36" wide in a hallway. The subfloor on both sides of it is pretty flat. So it'll be fine on both sides of the threshold, but the exact line where they meet will be the issue. In the picture you can see the different subfloor transition between the two rooms. It's made of mortar. There used to be a wall there when the addition was put on the house (in the 70s). It's about 8" wide and the level difference is about 7/16" over that 8"

• How much of a lift is there? A single direction slope is manageable but a peak or valley at the threshold is more of a problem. Apr 5, 2018 at 14:27
• Over the 8" horizontal area, it's off by about 7/16" vertically
– Jeff
Apr 5, 2018 at 15:07
• I'm still reluctant to post an answer because I can't see the situation very well. I want to know how close the transition is to the nearest corner or doorway in the hall. Are you able to post a photo from closer perspective in the other direction? Apr 5, 2018 at 15:46
• The transition itself is a corner. It's where the old house and the addition meet. To the right (in the picture) is a closet door. Then the nearest hall door is 40" away from the transition. I'll get better pictures when I'm at the house.
– Jeff
Apr 5, 2018 at 16:20