How to design door threshold up to newly tiled area 85mm height with sloped tiled area?

[njminchin]

We're in the middle of reno'ing our laundry and the screed was sloped at roughly 1:100 to drain. This meant that across one of the doorways there is a height difference of approx 8mm difference at either side. The screed + tiles also added approx 85mm of height difference between the floors at this door as well. I want to have a wooden threshold as the transition between rooms, however I'm not sure how to handle the 8mm of height difference across the doorway.

- sloping the threshold would look stupid when the door is closed as the gap would be inconsistent

- not sloping the threshold might look stupid from the tiled room side as you'll see the height difference

I was thinking of maybe extending the threshold slightly into the tiled area and cutting a "sloped" chamfer (i.e. one side will have a wide chamfer than the other, like this below. The bottom tile-side of the chamfer would have an equal height the whole way along. I'm this would help to make it look a little better

No markup:

I'm seeking ideas for what is the correct way to do this? Or some other alternatives?

[JacobZ]

Hi @njminchin,

A warm welcome to the Bunnings Workshop community, and thank you for your question.

I don't think there is a "correct" way to do this, and much of the choice comes down to personal preference and where you would like to hide the issue.

My opinion is that you should cut the timber transition so that the bottom edge follows the line of the concrete while the top edge is perfectly level with no chamfer. Any slight undulations on the floor will show on the bottom edge of the transition, but they can be covered with coloured silicone.

I feel that this would look cleaner than chamfering the top edge as the bottom edge of the timber will not draw the eye in the same way the top will. There also won't be any tactile difference that could be felt underfoot.

Allow me to tag @Nailbag, @TedBear and @Jewelleryrescue for their thoughts.

Let me know what you think.

Jacob

[Nailbag]

Hi @njminchin 

@again u with agree there is no right or wrong. I would go with your design allowing a few mm clearance from the ground for debris etc. It’s the most cosmetically better finish to me as well

Nailbag

[TedBear]

Hi @njminchin , sorry to come in late on this post. I agree with @JacobZ that the transition should be flat, in line with the unsloped floor, for reasons of safety. Making a transition with two different angles could create a tripping hazard, especially for visitors. The different surface angles would be masked by them being part of the one unit, which could go unnoticed by someone stepping on it. 

I suggest that you first put a strip of aluminium edging along the sloping tiled edged, trimmed to match the slope of the top edge. Then butt the timber transition to that. The difference in surfaces will then be visible, but not prominent.