Use this workshop calculation to turn measured dimensions and the selected construction convention into a cut, spacing, fit, or material-planning value.

Door count

Number of sliding door leaves in the run.

Overlap per junction (mm)

Overlap shared by two neighboring leaves at one junction.

Compute the total overlap consumed by the junctions of a multi-leaf sliding door set. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Total overlap (mm)

Total width lost to overlaps across all junctions in millimeters.

• Nominal dimensions, kerf, moisture movement, hardware clearances, wall squareness, and manufacturer instructions can change the required shop dimension. Measure the actual assembly and test critical joints on scrap before cutting finished material.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Complement the calculated dimension with a physical story stick, dry fit, or full-size layout. Follow the hardware, coating, adhesive, or machine manufacturer's limits where they differ from a rule of thumb.

• Door Frame Width With Gaps

  Compute door frame inner width and total side gap from the leaf width and per-side clearance.

• Folding Door Hardware Count

  Compute hinge sets and top track runners for a folding door panel set.

• Inlay Strip Width

  Set inlay-strip cut width from a measured groove width after subtracting a chosen total fit clearance.