Measure shower glass after the finished tile locks in the opening.

Custom shower glass is not measured from the framing plan. It is measured from the finished bathroom. A wall that moves slightly out of plumb, a tile edge that grows the opening, or a curb that pitches toward the drain can change the final glass size.

What Needs To Be Finished First

The tile should be complete at the shower walls, curb, bench, niche returns, and any side panel landing points. Silicone and grout should be far enough along that the final finished planes are clear. If the opening is still changing, the glass drawing can be wrong before fabrication starts.

What We Check During Measurement

A good field measure checks width at multiple heights, wall plumb, curb level, curb pitch, hinge-side blocking, door swing clearance, handle clearance, and whether a fixed panel needs clips, U-channel, or a support bar. In older Manhattan apartments, those details matter more than the nominal opening size.

Building Coordination Still Matters

Co-op and condo buildings may require a certificate of insurance, elevator reservation, service entrance timing, and quiet-hour compliance. That coordination should happen before install day, not after the fabricated glass arrives.