Glazier Job Description

A Glazier installs the glass and the framing systems that hold glass in a building, then seals them so they keep out air and water. The National Glass Association notes that glass installers are called glaziers in the trade, and both names describe the same job. The range of work is wide. On one project a crew may be anchoring curtain wall along the slab edge of a hospital tower; on the next it may be fitting a frameless shower enclosure in a house or replacing a cracked storefront lite before a shop opens for the day.

BLS describes the core tasks plainly: follow blueprints and specifications, remove old glass, cut glass to size and shape, check fit with measuring tape, plumb lines and levels, fasten glass into sashes or frames with clips, moldings or other fasteners, and seal the edges. Glaziers also specialize in particular products, including insulated glass that holds conditioned air and tempered glass that is less prone to breaking.

Commercial work

On larger projects the job is more assembly than cutting. BLS notes that for most large construction projects, glass is precut and mounted into frames at a factory or shop, so it arrives ready to position and secure, and workers lift heavy pieces with cranes or hoists fitted with suction cups. The glazier's skill shows up in layout, anchor placement, setting the frame true, rigging the panel safely and getting the gaskets and sealant joints right.

The vocabulary is specific. Storefront is the framed system at a building's base; curtain wall is the exterior wall hung from the structure, either stick-built from mullions and transoms on site or delivered as unitized panels. Entrances bring pivots, closers, panic hardware and thresholds. Skylights and sloped glazing add overhead work with their own flashing details. Interior work covers glass partitions, display cases and security windows.

Residential and service work

In homes, BLS lists windows, mirrors, shower doors and bathtub enclosures. Service glaziers drive a truck stocked with glass, setting blocks, glazing points and sealant, and their calls include replacement work: a fogged insulating unit, a broken sidelite, a door that no longer latches. Customer contact is part of that work.

Where glaziers work

BLS counts foundation, structure and building exterior contractors as the largest employer group, with 67% of glazier jobs in 2025, followed by retail trade at 12%. Smaller shares work for building finishing contractors, general builders and manufacturers. Automotive glass is a separate trade: BLS covers workers who replace and repair vehicle glass under a different occupation.

Getting in

BLS says glaziers typically need a high school diploma or equivalent and learn the trade through a 3- or 4-year apprenticeship or on-the-job training. Apprenticeship programs are sponsored by union and contractor groups, and BLS says most require applicants to be at least 18. Math through basic geometry, the ability to read a tape to the sixteenth, and comfort on a ladder are useful before the first day.

Apprenticeships come through two kinds of sponsors. One is the union route through the International Union of Painters and Allied Trades (IUPAT), whose glazier and glassworker apprenticeship pairs on-the-job training with at least 144 hours of classroom instruction a year and covers storefronts, curtain walls, skylights and partitions. Local programs set their own length: IUPAT District Council 11, for example, lists its glazing program at 4 years, 8,000 on-the-job hours and 576 classroom hours. The other is a non-union glass company, some of which run registered programs on the National Glass Association's Glazier Registered Apprenticeship Curriculum, which the NGA says costs apprentices $0 at companies that use it. Finishing a registered program earns a Certificate of Completion of Apprenticeship, the credential that marks journeyworker status. Others start as helpers and learn on the crew without a formal program.

Credentials worth having

• OSHA 10-Hour Construction (OSHA Outreach Training Program, delivered by authorized trainers): the 10-hour safety card, and a prerequisite for AGMT.
• OSHA 30-Hour Construction (OSHA Outreach Training Program): useful for foremen and crew leads.
• Architectural Glass and Metal Technician (AGMT) (Architectural Glass and Metal Certification Council): a credential for experienced installers, not newcomers. Its candidate handbook, dated September 16, 2026, requires at least 7,500 hours of glazing work within 5 years plus OSHA 10, and the performance test includes curtain wall, storefront and sealing sections along with layout and safety harness tests. Certification expires 4 years after it is earned.
• Aerial lift and fall protection training from the employer, since BLS notes the job may require work at great heights.

Skills that separate good glaziers

As a rough guide, it takes several years on varied work to run a crew. The habits that matter are precise measuring, reading shop drawings against field conditions, understanding why a sealant joint has the width and depth it does, and knowing the difference between annealed, tempered, laminated and insulating glass before cutting or setting any of them. Rigging judgment, clear communication with crane and lift operators, and a steady attitude at height round out the trade.

BLS projects employment of glaziers to grow 2 percent from 2025 to 2035, from 59,200 jobs to 60,300, which it rates as slower than the average for all occupations. The bigger number for job seekers is turnover: BLS expects about 3,900 openings for glaziers each year on average over the decade, and says most of them will come from the need to replace workers who move to other occupations or leave the labor force.

Demand comes from two directions, according to BLS: new construction, and the steady need to repair and replace windows and other glass in buildings already standing.

What contractors are reporting

Glass Magazine's 2026 Top 50 Glaziers report, a survey and ranking of North American glazing contractors, by contract glazing revenue, published by the National Glass Association, describes a tight labor market: 68% of respondents said the hiring environment had not changed year over year, and the report says recruitment and training remain the biggest hurdles for companies. Respondents said employee referrals tended to bring in candidates with glazing or construction experience, and they described probationary periods with close supervision as new hires take on more independence.

The same report found institutional work, led by education and health care, made up the largest share of respondents' 2025 business, and that a slight majority of responding companies fabricate curtain wall in-house. In-house fabrication is shop work: cutting and assembling framing and glazing unitized panels under a roof before they ship to the site. Robotic tool stations have also reached the trade: 21% of respondents had used one in the past year, and the report calls training a barrier.

Pay as you advance

National figures from BLS are in the summary above. The National Glass Association's 2025 Compensation & Benefits Study for Contract Glaziers, as summarized in the association's 2026 career guide, gives a picture of how pay steps up inside glazing contractors. Its median rates were $21 an hour for a glazier helper, $23.50 for an apprentice glazier and $36 for a journeyworker glazier who has completed a registered apprenticeship, while field superintendents, who run projects and are salaried, had a median of $80,000 a year. The guide notes that pay varies by region, employer, union status and overtime, and BLS adds that glaziers who work at heights may be eligible for hazard pay.

Where the path leads

From journeyworker, the National Glass Association career guide lays out a path to crew lead and then field superintendent. Others move indoors into estimating, project management or shop management at a glazing subcontractor, and some eventually open their own glass shops.

Dear Ms. Alvarez,

I am applying for the Journeyworker Glazier opening on your commercial installation crew. I finished my registered glazing apprenticeship two years ago and have spent the time since on storefront, entrance and curtain wall projects for a mid-sized glass contractor in the Columbus area.

The project I am proudest of is a four-story medical office building where our crew set unitized curtain wall panels from the second floor up. I handled tag lines and signaling for the crane picks, checked anchor elevations against the survey before each panel went in, and kept a daily log of stack joint gaps so the project manager could catch tolerance problems before they reached the upper floors. We closed the building in ahead of the roofer, which let the interior trades start early.

On the storefront side, I am comfortable laying out a run from the drawings, cutting and assembling framing in the shop, setting the frames, and glazing and sealing them. I have installed center-hung and offset pivot entrances and adjusted closers and panic hardware until the doors pass the owner's walkthrough. I take sealant work seriously: clean substrates, the right primer, backer rod sized to the joint, and a tooled bead that does not have to be cut out and redone.

I hold my OSHA 30 card, aerial lift training for scissor and boom lifts, and fall protection training, and I inspect my own harness and lanyard every morning. I am working toward the hours I need to sit for AGMT certification.

Your company's work on hospital and school projects is the kind of facade work I want to keep doing, and I would welcome the chance to talk with your field superintendent.

Sincerely, Jordan Reyes