Boarding up a broken window means clearing every loose shard of glass first, then screwing a piece of exterior-grade plywood over the entire opening so it overlaps the frame on all sides, sealing out weather and keeping the space secure. That’s the short version. Getting it right without hurting yourself or the frame takes a few more steps, and if the broken glass belongs to a storefront rather than a house, there’s an insurance and liability angle that most guides never mention. Sheppard’s Glass has boarded up and repaired broken glass across Columbia, West Columbia, and Chapin for more than 55 years, so here’s the process the way we’d walk you through it on the phone.
What Do You Need to Board Up a Broken Window?
You need exterior-grade plywood (CDX or OSB, at least half an inch thick), a tape measure, a drill or screw gun, deck screws or lag screws long enough to bite into solid framing, work gloves, and a broom and heavy-duty trash bags for the glass itself. Skip nails if you can. Screws hold better against wind and they come back out cleanly once the real glass repair happens, where nails tend to split the trim on the way out.
Measure the full window opening, not just the broken pane, and cut the plywood so it overlaps the frame by at least four inches on every side. A board that only covers the glass and stops at the sash edges will pull loose the first time wind gets behind it, since the screws have nothing solid to bite into beyond the thin window frame itself.
Is It Safe to Board Up a Broken Window Yourself?
A small, low window is a reasonable DIY job if you wear real gloves, watch for glass in the sill and the ground below, and have someone else around while you work. It stops being a reasonable DIY job once the opening is above head height, the frame itself is bent or cracked along with the glass, or the pane is a large commercial display panel rather than a standard house window, since those are heavier, harder to secure evenly, and more dangerous if the board comes loose later.
Broken glass edges are sharper than they look and hide in places you won’t check by eye, like the weep holes at the bottom of a window frame or the folds of nearby curtains. Sweep from the outside in, lift shards with a dustpan rather than your hands, and run a gloved hand along the sill afterward to catch anything the broom missed before you ever get near it with plywood and a drill.
How Do You Safely Clean Up the Broken Glass First?
Clear the glass before you touch the plywood, not after, since you’ll be leaning into the opening to measure and drill either way. Work outward from the center of the break, double-bag every piece in a trash bag before it goes in the outdoor bin, and check the ground below the window for anything that fell outside, especially if the break happened at night and you’re doing this by flashlight.
If the window faces a walkway, a parking lot, or a sidewalk that customers or neighbors use, rope it off or prop something visible in front of it until the glass is fully cleared. A stray shard from a storefront break-in is the kind of thing that turns into a liability claim against the business, not just a cleanup job.
Should a Storefront Window Be Boarded Up Differently Than a Home Window?
A commercial storefront opening is usually larger, set into a heavier aluminum or steel frame, and often sits right next to a public sidewalk, so the board has to be secured more thoroughly and the opening treated as a bigger security risk overnight. A plywood board over a home window mostly just needs to keep out weather and casual entry. A boarded storefront needs to actually deter a second break-in attempt, since an obviously plywood-covered display window can flag an empty building to the wrong person until the permanent glass goes back in.
Most local codes also expect a business to keep its entrance and walkway clear of broken glass and jagged edges even while it’s boarded, since customers and employees are still walking past it. If the board-up is going to sit for more than a day or two, check with your landlord or property manager about anything your lease requires for storefront security during repairs.
How Long Can a Board-Up Safely Stay Up?
Plywood over a broken window is a short-term fix, not a repair, and it should come down as soon as the actual glass is measured, ordered, and ready to install. Left up for more than a few days, a board-up starts to look like an invitation rather than a temporary fix, and it stops your storefront or home from looking open for business or lived-in. Weather is the other factor: a board that gets rained on repeatedly can start to warp or loosen at the screws, so check it every day or two if the permanent glass is taking longer than expected to source.
Standard tempered glass in a common size is often available regionally within a few business days. A custom size, a tint, or laminated security glass takes longer to fabricate, which is worth knowing before you commit to a board-up timeline you can’t actually meet.
What Should You Document Before You Clean Anything Up?
Photograph the broken glass, the surrounding frame, and any point of entry before you sweep a single piece into a bag, since an insurance adjuster or a police report will ask for exactly that. Get a wide shot of the whole window and a few close-ups of the break pattern, then photograph the board-up once it’s finished so there’s a record of both the damage and the temporary fix. If the break came from a break-in or vandalism, file a police report and keep the report number with your other paperwork.
Keep the board-up materials receipt and the eventual glass replacement invoice as two separate line items rather than folding them into one bill, since some commercial policies process emergency mitigation and permanent repair under different parts of the claim. Sheppard’s Glass built a claim submission page specifically so business owners can hand over that paperwork directly instead of tracking down invoices weeks later.
When Should You Call a Professional Instead of Finishing It Yourself?
Call a professional the moment the opening is above head height, the frame is damaged along with the glass, or the broken pane is part of a commercial storefront system rather than a standard house window. Those situations carry real fall and cut risk, and a board that isn’t seated evenly across a damaged frame can come loose exactly when you need it most, during the next storm or overnight.
Sheppard’s Glass offers after-hours emergency service for exactly this reason, so a broken storefront or home window doesn’t have to sit open until the next business day. We handle the board-up and the permanent glass replacement as one job, whether it’s a storefront glass repair for a business or a broken pane at home, so you aren’t coordinating two separate companies for one window. If a panel is broken right now, get a free measure and quote from Sheppard’s Glass, or call the shop to get the board-up scheduled today. Our broader commercial glass installation work covers storefronts, entrance doors, and glass partitions across Columbia, West Columbia, and Chapin if the damage goes beyond a single pane.
Frequently asked questions
Can I board up a broken window with cardboard instead of plywood? Cardboard and tape work for a few hours in mild weather, but they won’t hold against wind or rain and they don’t deter entry the way plywood does. Use cardboard only as a stopgap until you can get real plywood over the opening, especially overnight or before any weather moves in.
Do I need to remove the whole window sash to board it up? No, you board over the existing frame rather than removing it. Screw the plywood directly into the surrounding wall or frame studs so it overlaps the opening on every side, and leave the damaged sash in place until the professional glass replacement happens.
Will boarding up a broken window myself void my insurance claim? A basic board-up to secure the property is normal, expected mitigation and most policies want you to prevent further damage. Photograph everything before you start, and check with your insurer before doing any repair work beyond a temporary board-up, since some commercial policies require a licensed contractor for anything past that.
How do I know if the window frame itself is damaged, not just the glass? Run a gloved hand along the frame edges and check whether it’s bent, cracked, or no longer sits square in the opening. A frame that flexes or shows daylight around the edges when the sash is closed needs a professional look before any board-up, since screwing into a compromised frame won’t hold.
What if the broken window is at a business and customers are still walking past it? Rope off or cordon the area until every shard is cleared, and treat the board-up as urgent rather than something that waits for a slower moment. A storefront with exposed glass edges near a walkway is a real liability risk, which is exactly why Sheppard’s Glass offers after-hours emergency response for commercial breaks.
Can Sheppard’s Glass do the board-up and the permanent repair in one call? Yes. We handle the emergency board-up that secures the opening right away and the permanent glass replacement once the correct glass is measured, ordered, and ready to install, so one call covers both the temporary fix and the finished repair.
Image brief (for handoff, v1 images off)
Literal subjects to shoot or generate later, per image-prompts.md (full-bleed, real photography, no text):
- Hero: a real plywood board freshly screwed over a broken window opening, drill still in frame, daylight, glass shards visible swept aside below.
- “What you need to board up a window”: a flat lay of exterior-grade plywood, a drill, deck screws, work gloves, and a tape measure on a workbench.
- “Is it safe to do yourself”: gloved hands sweeping broken glass shards into a dustpan next to a shattered window frame.
- “How to safely clean up the glass”: a close-up of a gloved hand double-bagging broken glass shards in a heavy-duty trash bag.
- “Storefront vs home window”: a wide shot of a commercial storefront display window boarded with plywood next to intact glass panels, sidewalk in view.
- “How long a board-up can stay up”: a weathered plywood board on a window showing slight warping at the edges from rain exposure.
- “What to document before cleanup”: a hand photographing a broken window’s damage and frame with a phone before any cleanup begins.
- “When to call a professional”: a Sheppard’s Glass technician’s hands setting a new glass panel into a frame, the old board-up plywood leaning against the wall nearby.