Sizing Sliding Door Slab to Finished Opening
We recommend a minimum of 1” of overlap on all three sides. The drawings on the next page show 2” on sides, 1” on top, and ½” gap under door for demonstration purposes.
More overlap ensures the door will cover the opening better and not allow as much gap to show around the edges even if not shut fully.
To calculate door slab width on single door add overlap on side times two plus inside dimension of opening.
To calculate door slab width on pair of doors take half of inside dimension width and add one side of overlap dimension for each door slab.
To calculate door slab height take inside opening height subtract desired gap under door and add desired overlap on top. This could place the track over any trim that is over the top of the opening. Either the door slab needs to be adjusted in height so track can go above trim or trim needs to be flat and fully extend for full width under track.
Note all these dimension are easier to calculate if opening is just a sheetrock opening with no trim. You need to consider what the trim will look like with door in open and closed position. How much of the trim do you want showing if any at all?
For door height be sure to consider where the mounting lags need to go for mounting the track to the wall. They will be centered about 2.5” over top of door slab. Be sure there is proper backing and load support for lags to attach to at these points.
