Window Glass Replacement in Madison, WI

Glass-only replacement: can I replace just the glass in my window?

Ask the company to inspect the frame, sash and seals before it says whether the glass can be replaced on its own. Preservation Brief 9 explains why the wood matters: moisture is the main cause of decay in wooden windows, and decay starts at the sill and at joints where water collects (NPS, 1981). A probe test with an awl tells sound wood from rot, and a sill can hide rot under a sound-looking skin.

Signs the glass needs replacing? Cracks, chips, scratches that hurt visibility, drafts or temperature swings, fog between panes: what the sources cover

Describe a crack, a chip or a loose pane to the company in the quote form or on the call; for fog between panes, see foggy window repair. We found no source that rates scratches that hurt visibility, or drafts or temperature swings, as signs of failure, so describe them and ask what the company checks.

Cracked window glass replacement or repair, broken window glass replacement: which do you need?

Two national cost guides split the work by damage. Cracked pane repair averages $60 and runs about $40 to $100. Broken glass repair averages $300 and runs about $200 to $400 (This Old House, page dated 2026-06-23, cost data via Angi). HomeAdvisor gives a wider span for cracked or broken glass, from $75 to more than $2,000 per window (page dated 2026-06-17).

The ranges overlap, so ask the company to say in the quote whether it is repairing the existing glass or setting new glass, and to name the glass type either way. Is glass repair worth it, or is replacement better? Ask which one is quoted and why. A price far from these ranges deserves a question about glass type, size and what is included.

Glass replacement vs full window replacement: how to tell which you need

Settle this before you compare quotes. The table describes the choice without favoring either side. Whether a particular company sells whole windows is for that company to tell you.

How do you know which one you need? Ask the company to check the sash and sill for rot before it quotes, and to say in writing whether the window opens and locks as it should. Then compare the glass-only quote with a new-window quote on the same terms.

Single-pane glass in wood sashes: removing old glazing putty or glazing beads, setting the new pane, reglazing

Single pane window glass replacement in a wood sash is called reglazing: removing old glazing putty, setting the new pane and sealing it. This Old House gives the sequence as: remove the old glazing compound and the glass, clean the frame, set new glazing points, install the new pane, then apply new glazing compound. It suggests a professional glazier for large or detailed windows. The wood-sash details below come from the National Park Service's Preservation Brief 9 (printed 1981, national guidance, not a Madison rule).

Glazing putty and points, step by step

1. Take out the old putty and points. Preservation Brief 9 says to remove deteriorated putty by hand without damaging the rabbet (the groove the glass sits in) and to extract the glazing points. Hardened putty can be softened with a soldering iron.
2. Prep the wood. Remove what is left of the putty, then sand, patch and prime the sash with a preservative primer. The Brief says glazing compound should only go on wood brushed with linseed oil and primed with an oil-based primer or paint.
3. Bed the pane. Lay a bead of glazing compound or linseed oil putty around the rabbet to cushion and seal the glass, press the pane in, then push in new glazing points.
4. Bevel and paint the putty. Once a skin forms on the putty, usually in 2 or 3 days, the Brief says to paint it so the paint covers the beveled putty and laps slightly onto the glass, which completes a weathertight seal.

The Brief does not mention lead, so in a house built before 1978 follow the lead-safe section below for how to take old glazing out. Put these points in the quote: how the old glazing comes out, whether the sash is reglazed in place or taken out to a work area (Brief 9 describes the opening covered with polyethylene or plywood), and whether the job needs a second visit for the putty to cure and be painted.

Matching old or wavy glass

Preservation Brief 9 says the glass in a historic window may itself be historic and often adds character, so panes that come out whole should be numbered and put back in the same openings. If a pane is broken, put your wish for matching glass in the quote. If your house is in one of Madison's five local historic districts (First Settlement, Mansion Hill, Marquette Bungalows, Third Lake Ridge and University Heights), the city's standards say original decorative windows shall be repaired and retained. Ask the Preservation Planner how that applies to a replacement pane. For a house with several worn sashes, the wood window restoration page explains the wider job.

Double-pane and triple-pane units: ordering a new sealed unit to fit the existing sash

A double-pane or triple-pane unit is two or three panes, held apart by spacers and sealed around the edge. A desiccant absorbs moisture from within the sealed air space. Often there is argon or krypton between the panes (Efficient Windows Collaborative glossary; This Old House). The US Department of Energy adds low-e coatings that block radiant energy but let visible light through. For double pane window repair or replacement, ordering a new sealed unit means the unit is custom-made to the size of your sash, so the measuring decides whether it fits. No source read for this page covers a Madison supplier, so ask the glass company who measures the existing unit, who orders the new one and when it arrives.

How a sealed unit is measured and ordered

EngineerFix, a guide written for a vinyl window, gives this method. Wood sashes hold glass differently, so treat it as a guide to what a measurer should do, not a wood-sash procedure.

• Width and height: measure width at the top, middle and bottom between the interior stops, height at the left, center and right, and use the smallest value of each.
• Thickness: residential units are commonly 3/4 inch or 1 inch. The guide says to confirm it by probing the gap.
• Custom order: the unit is custom-made and ordered from a local fabricator or an online supplier.

For triple-pane units, ask the company to confirm that the sash can hold the extra thickness. If a thicker pane does not fit, see the frame-work cost below.

How a sealed unit is swapped in

The same guide describes three steps that change a quote: the glazing beads are popped free and kept in order; two setting blocks go at the bottom of the pocket before the new unit is lowered in. Last, a continuous bead of exterior-grade silicone or butyl seals the glass-to-frame seam.

Three options: a new unit, a new sash or a new window

A Minnesota home inspector (StructureTech) names three options for a failed sealed unit: replace the whole window, replace only the sash, or replace only the sealed unit. StructureTech names these three options and does not rank them by cost; ask the company which fits and what each costs. In a June 2026 update StructureTech says most windows would run $300 to $700, with larger windows costing more. This is one Upper Midwest inspector's market signal, not a Madison quote. A manufacturer warranty could cover a sash.

A second StructureTech article says most window makers give a 20-year warranty on the glass units, which does not cover labor. Ask whether your window is still under warranty before you order glass. For fogged units, defogging, seal repair and unit replacement are compared on the foggy window repair page.

Glass types and what each one costs

When a company says it will replace your window glass, ask which type. The type changes the price. The ranges below are national per-window ranges from HomeAdvisor (page dated 2026-06-19).

Float glass and annealed glass

Glass Doctor describes annealed glass as traditional glass cooled slowly, not suitable as safety glass because it breaks into large, sharp, unpredictable shards.

Tempered glass

Viwinco says tempered glass is heat-treated annealed glass, roughly four to five times stronger, and that it breaks into many small, rounded cubes. Glass Doctor says it is widely used as safety glass, so ask for tempered safety glass where a break could hurt someone (safety glass section below).

Laminated glass

Laminated glass is two layers bonded around a plastic interlayer (PVB), which holds the pieces in place when the glass breaks. Viwinco says it may crack but keeps its shape, and lists debris resistance, noise reduction and break-in deterrence as uses. Glass Doctor notes hurricane glass is a laminated type.

Low-E glass and gas fills

Glass Doctor says low-E glass has a transparent coating that reflects sunlight to cut solar heat gain. Argon and krypton are fills, not glass types, so they only apply to sealed units. Ask whether the unit is argon- or krypton-filled: we found no source on when each is used. Wisconsin's Uniform Dwelling Code energy rules expect new windows to carry an NFRC label that states the unit's U-factor, and where windows are not labeled, the code uses conservative default values (DSPS, SPS 322 commentary). Madison averages 7,138 heating degree days a year (base 65). Its January normal minimum is 11.8 F (Wisconsin State Climatology Office, 1991-2020). Ask what rating the new unit has and what spacer it uses, and have the answers written down.

Frosted, obscure and tinted glass

Glass Doctor describes obscure or privacy glass as glass that protects against prying eyes, used in bathrooms, offices and street-side rooms. This Old House says tinted or reflective glass reduces glare and solar heat gain. No source we read prices bronze-tinted glass; ask for tint in writing and see a sample.

How do you choose the glass for your home? Tell the company how the window is used, such as a bedroom window facing a street, a bathroom, a window beside a door or a cold room, and ask each company for the same glass type, so that your quotes compare like with like. Glass in a sliding window runs $150 to $900 per window nationally (HomeAdvisor, 2026-06-19); no source here prices sliding and patio door glass, so ask for a written quote with the unit size and glass type. Ask whether the company also replaces storm door glass. Storm windows are covered on the window screen and storm window repair page.

Safety glass where codes require it: model building code for doors, near doors, low large panes, tubs and stairs (not Wisconsin law)

The list below is the model residential building code as summarized by a California building department (Dublin, California, Building and Safety Division, citing California's R324, which follows the model code's hazardous-location list). It is a model building code, not Wisconsin law. Wisconsin's own safety-glazing rules were not read for this page, and Madison may differ, so ask the city which rule applies to your pane before you order glass (city pages are linked in the permits section below).

Under that model code summary, these are hazardous locations that need safety glazing:

• Doors. Glass in swinging, sliding and bifold door panels, with exceptions such as decorative glazing.
• Beside a door. A pane whose bottom edge is less than 60 inches above the floor and within 24 inches of either side of a closed door, with exceptions such as decorative glazing and a permanent barrier between pane and door.
• Large low panes. A single pane over 9 square feet, with a bottom edge under 18 inches from the floor, a top edge over 36 inches from the floor and a walking surface within 36 inches. All four must be true.
• Bathtubs, hot tubs, spas, whirlpools, saunas, steam rooms and pools. Glass in walls or enclosures facing them where the bottom of the glass is less than 60 inches above a standing or walking surface.
• Stairs and railings. Glass in guards and railings, and glass less than 36 inches above stair, landing or ramp surfaces.

Viwinco, a window maker, says the same in plainer words: building codes may require tempered glass in some places, such as a window below a set height, so check local codes. If your pane is in one of these spots, have the quote name the glass type.

The process: assessment and measuring on site, written quote, ordering or cutting the glass, removal and installation, cleanup

Here is what to expect and ask at each step of window glass installation.

1. The form or the call. Tell the company the window type, the number of panes, the damage, how many floors up the window is and whether the house was built before 1978, in the form's details or on the call.
2. Assessment and measuring. Ask who checks the frame, sash and seals, and measures the glass, and whether the quote names the thickness and groove depth, not only the length and width.
3. The written quote. It should name the glass type, the size, the number of panes, who orders the glass, what happens if the frame turns out to be rotted, and how the job is cleaned up. Wisconsin's consumer agency lists what a written home improvement contract should contain (see the company section below).
4. Ordering or cutting. Ask whether the glass is in stock or has to be ordered. If the opening stays open to the weather meanwhile, see the board-up section.
5. Removal and installation. Ask how the old glass or unit will be removed and the new glass set, how it will be sealed and, for a wood sash, how the glazing will be finished.
6. Cleanup and paperwork. Ask whether fragments will be cleaned up and whether the window will be tested to open, close and lock before you pay the balance. Keep the quote, the invoice, the glass type and size, and, in an older home, the lead-safe records described below.

How long it takes: is a stocked single pane a same-visit job, and are ordered sealed units or custom glass days or weeks?

How long does home window glass replacement take? It depends on whether your size and glass type are in stock or must be ordered. No source we read gives a same-visit time for stocked single panes, or a days figure for ordered sealed units; EngineerFix says one to three weeks for custom units. Ask the company which applies to your window. Two stored signals help you judge a quote:

• Ordered sealed units. A Minnesota inspector's glass was ready in about two weeks after measuring. Neither figure is a Madison supplier's, so ask each company for its arrival date and install date in writing.
• Wood sashes. Preservation Brief 9 describes a 1981 do-it-yourself repair that took several days because putty, primer and paint need time to cure. It is not a contractor's timing, but it shows why a putty job may need a second visit.

Window glass replacement cost in Madison

The prices below are national ranges from dated sources. They are not Madison quotes. The four Madison window and glass companies looked at for this page publish no price, and this page does not adjust national figures with a made-up local factor. Use them to judge whether a quote is in a believable range.

Headline ranges: window glass repair pricing and the cost to replace window glass

By number of panes, window type and extras: single pane and double pane window glass replacement cost

Single pane window glass replacement cost starts at $150 and double pane window glass replacement cost starts at $300 per window on the national list below. Prices rise with each added pane, with size and with glass type.

Source for this table: HomeAdvisor, replace window glass, page dated 2026-06-19. It comes from the same page as the glass types table above, which prices by glass type; this one prices by pane count and window type, so the two overlap and should not be added together.

What moves the price

• Panes, glass type, window type and size. Float is at the low end and Low-E, argon and krypton at the high end; bay windows run up to $3,800. A Minnesota inspector adds that spacer type, grids, tempered glass and height above the ground change a sealed-unit price (StructureTech).
• Frame work. If thicker panes do not fit, HomeAdvisor lists $180 to $600 extra per window.
• Access and number of windows. Ask whether the company charges per visit or per window, and whether the quote covers a window on an upper floor or behind a porch roof.
• Labor. HomeAdvisor lists glass installer labor at $50 to $75 an hour.
• Anything found when the old glass comes out. Ask what the quote says if the company finds rotted wood or old glazing that needs wider repair.

As a market signal only, one multi-state company, Argo, lists window glass at $150 to $650 before labor and labor at $100 to $300 (argowindowrepair.com, retrieved 2026-10-23). That is one company's list, not a Madison price.

Homeowners insurance: sudden damage vs wear and seal failure; deductibles

Does homeowners insurance cover window glass repair? The sources read for this page do not say which causes a policy pays for, so this page cannot promise coverage. The Insurance Information Institute (Triple-I) says to phone your insurance professional immediately and ask whether you are covered, how long you have to file and how long processing takes. Only your policy answers whether a storm or break-in is treated differently from age or a failed seal, so put that question to your insurer in those words.

• Before you file. Triple-I says to photograph or videotape the damage and keep damaged items until the adjuster has visited if possible. For theft, burglary or vandalism it says to file a police report.
• Deductible against the price. Triple-I: "If your loss is lower than your deductible, you probably won't want to go through the claims filing process." Set that against the national pane prices in the cost section: with a higher deductible, a claim may pay nothing. Triple-I says the insurer sends forms once you establish you will make a claim and you return them quickly.
• Receipts. Wisconsin's insurance regulator (OCI) says to notify your insurance agent or company right away, not to throw out damaged property without the claim adjuster's agreement, and to keep all receipts for the repair or replacement.
• Contractors after a storm. OCI says to confirm the contractor's state credential, to check with the Better Business Bureau and the state consumer protection agency (DATCP) for complaints, and, if you feel pressured to sign quickly, to take a step back and investigate.

Should you contact the insurer before you call a glass company? Triple-I says to take reasonable steps to protect your property from further damage. If the window is open to the weather, cover it, keep the receipts and call your insurer from there.

Temporary safety until the glass arrives: board-up

When glass has to be ordered, the opening still has to be closed. Preservation Brief 9 says a window opening can be covered with polyethylene sheets or plywood while the sash is out for repair. Ask how the opening will be covered until the glass arrives. With January's normal minimum at 11.8 F (Wisconsin State Climatology Office, 1991-2020), an uncovered opening is a real problem in winter. Triple-I tells policyholders to take reasonable steps to protect the property from further damage and keep receipts for what they spend; its article does not mention board-ups by name, and OCI's 2018 storm release does not address them either.

The emergency window repair and board-up page covers what to do right after a window breaks and what an emergency visit may cost. Whether a company offers emergency glass service, and when, is the company's own answer.

Pre-1978 homes: lead-safe rules for window glass work

If your home was built before 1978, paint on the windows may contain lead. Wisconsin's lead-safe renovation rule applies to homes and child care centers built before 1978. The Department of Health Services (DHS) says both the company and the individuals doing the work need certification before they do most paint-disturbing jobs, and it lists window removal and window replacement among the covered jobs. Window replacement is covered even when the windows being removed are vinyl. Any company that offers to conduct renovation work must be a certified lead company, and each project needs an assigned certified lead-safe renovator (DHS renovation FAQ).

DHS says the rule covers interior work that disturbs more than 6 square feet of painted surface per room, exterior work that disturbs more than 20 square feet, window replacement, or demolition. The EPA's Renovation, Repair and Painting rule agrees that window replacement is always covered, whatever the square footage.

The EPA FAQ addresses glass-only work. It says fixing a balancer or replacing a pane of glass is not a window replacement, but the job is still covered above 6 square feet of painted surface per room. The glazing around old panes is painted and has to be removed, and its area counts toward that limit. The DHS renovation FAQ does not mention glass-only work; it uses 6 square feet indoors and 20 square feet outdoors as thresholds and covers any window replacement. Ask the company which it follows for a pane swap.

Owners working on their own home are generally outside the rule if only they and immediate family live there, no child with a high blood lead level lives there and no part is rented. Rentals are covered.

What this means for you:

• Tell the company the year your house was built when you call.
• Ask whether the person who will do the work is certified as a Lead-Safe Renovator and works for a certified lead company. The state publishes a list of certified lead companies, updated monthly.
• Ask whether you will be given the EPA Renovate Right pamphlet. The state says it must be given no earlier than 60 days before work starts.
• Ask how the company will contain dust, clean up and verify that the area is clean, and keep the records the state suggests: copies of certifications, the signed pamphlet confirmation, a summary of the work and a cleaning verification.

Permits and rules in Madison

Whether you need a permit is a different question from whether the company is certified, and the answers for glass-only work are not as clear as for a new window.

• New windows. The City of Madison's permit chart lists "Windows & Frames - replace" as needing a permit, handled by Building Inspection. Its storm-damage page says a building permit is required for replacing roofing, siding and windows.
• Small repairs. The same page says a permit is not required for small repairs under $500 in estimated value. It does not say whether a pane job counts as a small repair.
• Glass-only work. The permit chart has no row for glass-only replacement and no notes column. Contact Zoning staff through the city's permit page before you order. The chart does not say a glass-only swap is exempt, and this page does not say it is either.
• Changing the opening. The city says owners of one- and two-family homes can apply online for window work that needs no plan review, such as replacing windows or doors in an existing opening with no changes to the opening. Adding, removing or resizing windows needs plan review and cannot be filed online.
• Who may work. Madison says contractors working on one- and two-family homes must hold a state credential, and recommends checking it in the state's online lookup before a permit is pulled. The page does not say which credential applies to window glass.

The city's own pages are the place to confirm: Madison permit chart, storm damage guidance and online permits for one- and two-family homes.

Historic districts and landmarks

Madison has five local historic districts and 184 local landmarks, regulated by the Landmarks Commission. The commission reviews projects that change the exterior appearance of a designated landmark or of a building in a local historic district. A property is covered if its zoning carries a suffix such as HIS-L, HIS-UH or H, so check your parcel's zoning first. Exterior changes to locally designated properties need a Certificate of Approval, and the city asks owners to apply for it before applying for a building permit. The city page lists a Window Replacement Form and a Sample Window Assessment but does not say that every window change needs approval.

The district standards say maintenance work alone does not need a Certificate of Approval, and that staff can approve repair proposals administratively. They also say a historic single-glazed sash may be modified to take insulated glass in limited cases, when this will not damage the sash or change the window's appearance much. The city's standards PDF shows no date, and the ordinance may have been revised since, so confirm the current wording with the Preservation Planner before you order insulated glass for a historic sash. Read the city's historic preservation page first.

Choosing a glass company: written quote, glass type stated, who orders the unit, what happens if the frame is found rotted

We connect you with a local window glass company. These questions work for any glass company you call.

1. Ask for a written quote that names the glass type. "Replace glass" is not enough. The quote should say float, tempered, laminated, Low-E or another type, and the size and number of panes.
2. Ask who orders the glass, and when it is expected to arrive.
3. Ask what happens if the frame is rotted.
4. Ask about lead-safe certification if the house was built before 1978. Ask to see it, and check the company on the state's certified list.
5. Ask about the permit. Who will confirm whether one is needed, and who files it if so?
6. Ask what the visit costs and what it includes. Is travel charged? Is cleanup included?
7. Get any promise about the work in writing, with its limits, and compare like with like: same glass type, same size, same cleanup, same date.

Wisconsin's consumer protection agency (DATCP) says a written contract should include the company's name and street address, a full description of the job, the total price, and start and completion dates. For a contract signed at home, it says state law gives three business days to cancel a contract over $25, and the contractor must give you two copies of a cancellation notice. The page does not name windows, so ask the company how these rules apply to your job.

Check the company's credential in the state's online lookup, and read its reviews on independent sites, not just on its own pages. When you are ready, send the quote form on this page or call (804) 889-2677, and we will connect you with a local company. The contact page has the details.

Frequently asked questions

How to request a window glass quote

Send the quote form on this page or call. Have the window type, the damage and the year the house was built ready.

Call (804) 889-2677 or send the quote form on this page. We call you back within one business day and connect you with a local window glass company.

Sources

1. HomeAdvisor, window glass replacement cost (page dated 2026-06-19)
2. HomeAdvisor, window repair cost (page dated 2026-06-17)
3. This Old House, window repair cost (page dated 2026-06-23, data via Angi)
4. Argo, window glass replacement (retrieved 2026-10-23, market signal only)
5. Wisconsin DHS, lead-safe renovation and hiring a lead-safe contractor (retrieved 2026-10-18)
6. EPA, Renovation, Repair and Painting rule and EPA, window repair FAQ (retrieved 2026-10-18)
7. City of Madison, permits and storm damage (retrieved 2026-10-18)
8. City of Madison, online permits for 1- and 2-family homes (retrieved 2026-10-18)
9. City of Madison, historic preservation and Historic Districts Standards (undated PDF, retrieved 2026-10-18)
10. Wisconsin DHS, lead-safe renovation FAQ (retrieved 2026-10-24)
11. City of Madison, landmarks and construction in historic districts (retrieved 2026-10-24)
12. Efficient Windows Collaborative, glossary (retrieved 2026-10-24)
13. Insurance Information Institute (Triple-I), how to file a homeowners claim (retrieved 2026-10-24)
14. Wisconsin Office of the Commissioner of Insurance, after a storm hits (retrieved 2026-10-24)
15. Wisconsin DSPS, SPS 322 commentary (undated PDF, retrieved 2026-10-18)
16. Wisconsin DATCP, home improvement contracts (retrieved 2026-10-18)
17. Wisconsin State Climatology Office, Madison climate (retrieved 2026-10-18)
18. Glass Doctor, types of window glass (retrieved 2026-10-24, company guidance)
19. Viwinco, annealed, tempered and laminated glass (retrieved 2026-10-24, manufacturer guidance)
20. US Department of Energy, high-performance window glass (retrieved 2026-10-24)
21. This Old House, window glazing (retrieved 2026-10-24)
22. EngineerFix, replacing double-pane glass in a vinyl window (retrieved 2026-10-24, vinyl-window guide)
23. StructureTech, repairing a window with fogged glass and StructureTech, failed seals (retrieved 2026-10-24, one Minnesota inspector)
24. City of Dublin, California, Building and Safety, safety glazing handout (retrieved 2026-10-24, model building code summary, not Wisconsin law)
25. National Park Service, Preservation Brief 9, The Repair of Historic Wooden Windows (printed 1981, retrieved 2026-10-24)
26. Wisconsin Office of the Commissioner of Insurance, storm release (2026-07-28) and storm aftermath release (2018) (retrieved 2026-10-24)