Problems Making a Threshold

  • Advertise with us

« back to Wood & Lumber forum

Forum topic by jasoncarpentry posted 11-27-2014 12:46 AM 1486 views 0 times favorited 3 replies Add to Favorites Watch
View jasoncarpentry's profile


142 posts in 2680 days

11-27-2014 12:46 AM

Topic tags/keywords: threshold floors

I’m making a threshold for a 6-foot-long opening between two rooms in my daughter’s house. The opening itself is about 3”-4” wide, and is filled w/ a mixture of 2×4’s, 4×4’s, old masonry, etc. In short, it’s really ugly!

I bought an oak 1×8 and planed it down to 5/8” thick (which may have been my first mistake). Now it turns out that the vertical difference between the floors in the two rooms isn’t constant along the entire 6 feet. Instead, it’s 1/2” at one end and 7/8” at the other end.

My first thought is to cut one or more tapered pieces of oak and glue them onto the bottom of the long piece to fill the gap. I have a table saw, a tapering jig, and some scrap pieces of oak flooring.

To make matters more complicated, I want to cut a slight lengthwise chamfer (5-10 degrees) on each side of the threshold. All of the wooden thresholds I’ve seen have this feature. Any advice you folks can give would be greatly appreciated!

-- Jim in Tennessee

3 replies so far

View lateralus819's profile


2241 posts in 1916 days

#1 posted 11-27-2014 12:54 AM

I just made two a few weeks ago using oak. I planed the chamfer/angle with a hand planed to eye. Don’t know if you have one or not.

As for the discrepancy between the two, is it possible the flooring is loose at all? I had the same issue and it turns out a part of the floor wasn’t nailed down tight.

View Dave G's profile

Dave G

332 posts in 2074 days

#2 posted 11-27-2014 03:13 AM

The higher side doesn’t need a chamfer and will look better without. When I connected a tile bathroom floor to red oak hallway the red oak threshold was initially 1/4” proud to the tile. And it wasn’t even. It was 1/4” at one end an dead even at the other. With the smoothing plane I evened it all out and it looks great. It is even with the tile. There is an uneven 1/4” nominal chamfer and total of 1/2” drop to the hallway floor but you couldn’t tell even after I told you to look.

-- Dave, New England - “We are made to persist. that's how we find out who we are.” ― Tobias Wolff

View jasoncarpentry's profile


142 posts in 2680 days

#3 posted 11-27-2014 05:43 PM

Dave G: Thanks for the input; your project really turned out nicely! In my case, the higher floor is made of a “Pergo” type material which runs perpendicular to the threshold. The sections weren’t cut off evenly, so I had planned to do one of two things to deal with this:

1) On the Pergo side, cut a rabbet on the threshold bottom to overlap the uneven ends, or
2) Take a wood chisel, or a Skil saw, and cut the Pergo ends along a straight line. That way, I could make the edge of the threshold butt up against the flooring (like you did w/ the tile side of your floor).

I would still have to deal with the slope on the lower side, and would still have to shim it up w/ one or more tapered pieces. As far as the chamfer goes, you guys have recommended using a hand plane. Well, I don’t have a hand plane, or the skill to use one. I had planned to cut the chamfer either on my table saw, or go ahead and install it, then use my small Porter-Cable belt sander to create the chamfer.

What do you think?

-- Jim in Tennessee

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics