August 8, 2026 When to Bring Your Glazing Sub Into the Project (It’s Earlier Than You Think)

Most GCs call their glazing sub when the tile is done.

It makes sense. Glass is a finish. It goes in near the end, it gets measured off finished surfaces, and there’s nothing for a glass company to do while the framing is still open.



Except there is. By the time the tile is done, three decisions have already been made that determine whether the glass install is routine or painful — and none of them were made by the glazing sub.

Decision one: blocking

Glass railings, heavy swing doors, and header supports all need something solid behind the finish surface to attach to. That gets decided during framing.

If nobody told your framer where the glass is landing, you find out after the tile is up — and then you’re choosing between an anchor detail nobody loves, a design change, or opening finished work back up. All three cost you time you didn’t budget.



A five-minute conversation during framing prevents all of it.

Decision two: how plumb is plumb enough

Framed shower doors hide a lot. Frameless enclosures hide nothing. A wall that’s out of plumb across the height of an enclosure shows up as a visible taper along the glass edge, and there’s no hardware trick that makes it disappear.

Your framer isn’t doing anything wrong — normal framing tolerance is normal framing tolerance. But if the plan calls for frameless, the walls around that enclosure need more attention than the rest of the room, and your framer needs to know that before he builds them.



Same for the curb. A curb that isn’t level or that pitches the wrong direction turns into a water problem later, and a glass problem immediately.

Decision three: what's actually getting specified

Glass type, thickness, hardware, and finish drive lead time far more than square footage does. Stock hardware in a common finish can move quickly. A specialty finish, an oversized panel, or a custom hardware package can add weeks.



If that conversation happens after tile, the lead time lands on your critical path and there’s nothing left to absorb it. If it happens during framing, you have room to choose — or to swap the finish before it costs you a schedule.

So when should you call?

During design or bidding. Get the glass scope, glass type, and rough lead times into your number before you commit to a schedule.

Before framing closes. Confirm blocking locations, rough openings, and any plumb-critical walls. This is the highest-value call on the whole project.

Before tile goes up. Confirm curb height and slope, wall finish, and where the glass edges will land relative to plumbing trim.

After tile and waterproofing are complete and cured. Now the field measure happens on the actual finished surfaces.



Coordinated with your plumbing trim. Valves, trim, and hardware compete for the same inches. Better to catch it at measure than at install.

What this saves you

Bring a glazing sub in at framing and the worst case is a short conversation you didn’t strictly need. Bring them in at tile and the worst case is a change order, a delay, and a client asking why the shower isn’t done.



It’s not a close call.

How we handle it

We’d rather walk your job during framing than get called after tile. When we’re in early, we’ll tell your framer where blocking needs to go, tell your tile contractor what we need from the walls and curb, and give you real lead times while there’s still time to use them.



Our owner is personally involved on every project, and we coordinate with you days in advance at every stage — so you’re never finding out about a constraint too late to do anything about it.