Broken Commercial Glass: What to Do in the First 24 Hours (Securing, Documenting, Replacing)

Clear and control the area on both sides of the opening. Broken glass travels much further than people expect, especially when tempered glass lets go and scatters, and the hazard extends to the floor above and below on a stair or mezzanine. Establish a perimeter that is wider than the visible debris field and keep it in place until a professional clean-up is complete.

Treat glass that is cracked but still standing as more dangerous than glass that has already fallen. A damaged lite still in its frame is under load and can release without warning, particularly a tempered panel with an edge impact or an annealed lite with a crack that has reached a fixing point. Nobody should be under it, and it should not be prodded, taped, or leaned on to see how bad it is.

If the failure involves a door, take the door out of service rather than letting it keep operating. A damaged entrance door with compromised glass, a broken patch fitting, or a failed closer is both a hazard and an egress question, and continuing to cycle it usually turns a glass replacement into a hardware replacement as well.

Documentation is cheap for five minutes and impossible afterwards. Before anything is swept, boarded, or removed, photograph the opening from a distance and close up, from inside and outside, including the frame, the hardware, the floor, and any adjacent damage. Wide shots establish location and context; close shots establish the failure point.

Write down the time the damage was discovered, who discovered it, what was happening at the time, and whether anyone was injured. If there is any possibility of a break-in, vandalism, or a vehicle impact, file a police report before the site is cleaned — many insurance policies expect one, and the report number is far easier to obtain on the day than a week later.

Save the broken pieces if the cause is disputed or unclear. The fracture pattern and the location of the initiating damage carry information about what happened, and once the debris is in a dumpster that information is gone. If the building has camera coverage of the opening, export the footage immediately rather than relying on a system that may overwrite it in days.

Temporary securing has three jobs: keep people out, keep weather out, and keep the remaining glass from becoming a second incident. Which method fits depends on the opening, the exposure, and how the business needs to operate in the meantime.

Plywood board-up is the standard for a full lite lost at ground level, especially overnight and on a street frontage. It is fast, it deters entry, and it takes weather. Its costs are visibility and appearance — a boarded storefront tells the street the business is closed even when it is not.

Clear temporary glazing, typically a polycarbonate or acrylic sheet set into the existing frame, keeps daylight and the storefront's appearance while the permanent glass is fabricated. It generally suits retail and restaurant frontages where staying visibly open matters, at the cost of a slower install and less impact resistance than plywood.

Where only part of an assembly failed, partial securing plus removal of the damaged lite is often better than covering the whole bay. Removing loose and cracked glass from the frame is part of the job in every case: leaving fragments in the channel means the frame has to be cleared again before the new glass can be set, and it leaves a hazard in place in the meantime.

Once the opening is secure, replacement becomes a fabrication problem rather than an emergency. A glazier measures the opening — the actual opening, not the drawing — identifies the glass make-up, and orders it. Everything after that is driven by what the glass is.

Monolithic tempered glass in a common thickness is the quickest category, but it is still a fabricated item: tempered glass cannot be cut after heat treatment, so it has to be made to size. Insulated units are slower because they are assembled from two or more lites with a spacer and seal, and any coating, tint, or laminated component adds to that. Laminated, fire-rated, security, and oversized glass are longer again, and specialty coatings or an obsolete tint can extend the schedule significantly.

Two conditions extend the timeline in ways that surprise owners. The first is a frame that was damaged along with the glass: a bent or torn storefront member has to be repaired or replaced before glass can be set, and framing components have their own lead time. The second is an older building whose glazing system is no longer manufactured, where matching the existing sightline may mean adapting a current system rather than dropping in a like-for-like part.

Notify the carrier early, even before the scope is known, and ask two specific questions: whether the policy covers temporary securing as well as permanent replacement, and whether they require an adjuster to see the damage before repairs begin. The answers change the sequence, because in some cases photographs taken before a board-up are the only evidence an adjuster will ever get.

Ask the glazing contractor for a written scope that separates emergency securing from permanent replacement. Carriers process those differently, and a single lump-sum invoice for both is more likely to be questioned than a clear two-line scope with the temporary work identified as temporary.

Keep the paper trail in one place: photographs, the police report number if there is one, the securing invoice, the measured scope, and the replacement quote. If the same opening has failed before, include that history — repeat failures at one location often point at a cause, such as a door that no longer closes properly or a frame that has moved, that is worth fixing alongside the glass.

Some breakage is genuinely random. A lot of it is a maintenance problem that announced itself first. Doors that have drifted out of adjustment slam and eventually break; failed closers and worn pivots concentrate load on the glass; a leaking or corroded frame loses its ability to support and cushion the lite it holds. Entrance hardware that is serviced on a schedule breaks far less glass than hardware that is serviced when it fails.

Where the exposure is impact or forced entry rather than wear, the answer is usually a change in glass make-up at the next replacement — a laminated or security-oriented build in place of a monolithic lite. That decision is worth making at replacement time, when the glass is being ordered anyway, rather than after the next incident.

Finally, decide who to call before you need to call them. Knowing which contractor holds your building's glazing details, and having the opening dimensions and glass make-up on file, removes hours from the response on the day something breaks.

Once the area is safe, the call order matters more than speed. If there is any injury, a fire, a structural concern, or evidence of a crime, emergency services come first and nothing gets touched or cleaned until they release the scene. A police report number is also what most insurers will ask for on a break-in claim, and it is far harder to obtain after the fact.

Second is the glazing contractor, and the useful call includes specifics: the address and access details, whether the opening is at grade or above, the approximate size of the broken lite, whether it is a door or a fixed panel, whether the glass is fully out or hanging, and whether the frame appears damaged. Photographs sent while you are on the phone shorten this considerably and let the contractor arrive with the right board-up materials.

Third is your insurer or broker, to open the claim and confirm what documentation they need before repairs proceed. Fourth, if you lease the space, is the landlord or property manager — most commercial leases assign exterior glass to one party or the other explicitly, and doing emergency work outside your responsibility can complicate reimbursement.

The first visit is stabilization, not completion. A crew removes loose and hanging glass, cleans the frame or opening enough to work safely, and closes the opening with plywood, polycarbonate, or a temporary panel fixed so it resists a second attempt. Where a business needs to stay visibly open, a clear temporary panel is sometimes an option depending on the frame and the size of the opening.

That temporary closure is designed to hold for days or weeks, not indefinitely, because the replacement glass has to be fabricated. Field measurements are taken during or right after the board-up so the order can be placed immediately; tempered and laminated lites cannot be cut on site and insulated units are assembled to order, so the lead time starts at measurement, not at the second visit.

The return visit removes the temporary closure, preps the frame, sets the new glass with the correct gaskets, blocks, or wet seal, and verifies operation on doors. Where the frame or hardware was damaged, that work happens at the same time. Ask for the fabrication ticket or specification of what was installed and keep it — it is what makes the next replacement, if there ever is one, faster.

Businesses that recover fastest have three things ready before anything breaks. The first is a glass schedule: a simple document listing each exterior opening with its approximate size, glass type, and whether it is a door, a fixed lite, or an insulated unit. It turns an emergency measurement visit into a phone call.

The second is a decision-maker and an after-hours contact who can authorize temporary work without a committee. Board-up costs are small relative to a night with an open storefront, and delay is usually the expensive part.

The third is a copy of the lease clause and the insurance policy language on glass, read before it is needed. Knowing your deductible and whether glass is scheduled separately determines whether a small claim is worth filing at all, and it prevents a week of back-and-forth while the opening sits boarded.

Physical measures help too, and they are worth a conversation during the repair rather than after: security film on vulnerable lites, laminated glass in place of monolithic tempered where a forced-entry risk is real, better lighting at the entry, and removing the visible cash-register or display cues that make a storefront a target in the first place.