Insulated Glass Replacement

Fogged or Broken Double‑Pane Glass

You don’t need a whole new window—often just the glass. In most cases, we replace the insulated glass unit (IGU) inside your existing frame for a fast, precise, and budget‑friendly fix. For a quick overview of options, see Replacement Window Glass Options Explained for Homeowners.

Fogged between the panes? Streaked or cracked? We’ll swap the sealed IGU and keep your frame when it’s in good shape. It’s a cost‑saving solution that restores clarity and insulation. Family‑owned in St. Louis for 28+ years—learn more About Us. Straight answers. Low pressure. No commissioned sales.

Call 314‑353‑8350 for a free, no‑obligation quote, or request one at viviano-inc.com/free-quote. Prefer to talk in person? Visit our showroom at 7530 Watson Rd, Shrewsbury, MO 63119. Hours: Mon–Fri 8:00 a.m.–4:00 p.m.; closed Sat–Sun.

Get a Free Quote See Current Specials

Why homeowners choose Viviano for insulated glass replacement

• Trained, insured installers (code‑compliant, lead‑safe practices where required)
• Warranties on glass and workmanship (details)
• Accurate measuring to match thickness, Low‑E/tint, argon fill, and grids
• Clean installation and haul‑away of old glass
• Upfront guidance—if a full window makes more sense, we’ll tell you

How it works

• We measure on site to spec your IGU correctly
• Your glass is custom‑built to match your existing window
• We install, seal, and clean up—no mess, no hassle. See how pros prevent leaks: How Window Installers Prevent Leaks and Water Intrusion

We also replace fogged or broken IGUs in patio doors and sidelights—ask for details.

Questions? Call 314‑353‑8350 or start with a quick Free Quote online. We make it easy and never push a one‑call close.

Do I need glass‑only replacement or full window replacement?

Often you don’t need a whole new window, just a new insulated glass unit (IGU). With glass‑only replacement, your frame and sash stay put while we swap the sealed double‑ or triple‑pane unit. A quick, no‑pressure check from our St. Louis team can confirm this and help you avoid buying a full window you don’t need.

Glass‑only replacement is usually right when:

• The frame and sash are solid, with no rot, warping, or water damage.
• The window opens, closes, and locks properly, and hardware still works.
• The issue is inside the glass: fog or haze between panes, mineral streaks, or a cracked lite.
• You want to control cost and turnaround and keep your current trim and look.
• You want to match what you have or make a targeted upgrade, such as Low‑E/argon, required tempered glass, or matching grids and tint.

Consider full window replacement if:

• Frames are rotted, soft, warped, swollen, or leaking around the perimeter.
• Sashes or hardware are failing, won’t open or lock, or you have strong drafts not caused by the glass.
• You want a big change in performance or style, such as a new frame color, grille pattern, operation type, or larger opening.
• The sash can’t be reglazed because it wasn’t designed for IGU replacement. Learn more about alternatives: Sash Replacement Kits

Our approach is simple. As a family‑owned dealer, we start with the most cost‑effective fix. When it’s safe and feasible, we price glass‑only first so you keep your existing frames and spend less. If full replacement makes more sense, we’ll explain insert vs. full‑frame methods (see Full‑Frame vs. Insert Replacement Windows) and how those differ from new‑construction units (Replacement Windows vs. New‑Construction Windows), then give you clear, written pricing—no high‑pressure pitch.

Not sure where your window fits? See the most common signs of IGU failure below. Or get answers now: call 314‑353‑8350 or request a free quote. You can also stop by our showroom at 7530 Watson Rd, Shrewsbury, MO (Mon–Fri, 8–4). We’ll measure your glass, verify any tempered/code needs, and help you choose the most sensible path.

How to know your insulated glass unit has failed

Not sure if it’s a failed seal or just seasonal condensation? Here’s how to tell—and when a simple glass‑only replacement can fix it without replacing your whole window.

Signs an insulated glass unit (IGU) has failed and needs glass‑only replacement:

• Persistent fog, haze, or moisture between panes that won’t wipe away from either side.
• Mineral streaking, cloudy “milky” areas, or water spots inside the glass cavity.
• A drafty feel near the sash when windows are closed, or visible perimeter seal issues such as cracked glazing, a loose spacer, or gaps in sealant.
• A cracked or broken pane in a double‑ or triple‑pane unit. This breaks the seal and lets moisture in.

Quick check: if condensation wipes off the room side or exterior surface, your IGU is likely intact and the issue is humidity or temperature. If moisture is trapped between panes and never goes away, the seal has failed.

About “defogging”: drilling or venting may improve looks for a short time, but it does not restore the insulating seal. For a lasting fix, the IGU is typically replaced while keeping your frame and sash when possible—saving you money and keeping what already fits your home.

Seeing these symptoms? Let our St. Louis team confirm it on site and give you straightforward options—usually glass‑only first for the best value. Call 314‑353‑8350 (Mon–Fri, 8–4) or request a no‑pressure estimate. You can also stop by our showroom at 7530 Watson Rd, Shrewsbury, MO 63119. Family‑owned for 28+ years, we don’t do high‑pressure sales—just The Intersection of Price and Quality.

Keep reading to see how we measure, order, and install your replacement glass, typical timelines by glass type, and any code needs.

Our 5‑step insulated glass replacement process (with typical lead times)

We make insulated glass replacement straightforward. When it’s the smart, budget‑friendly choice, we keep your existing frame and replace only the failed insulated glass unit (IGU). If a full sash or frame replacement would serve you better, we’ll explain why and price both options—no pressure.

1. Site visit and precise measurements

   

   • Identify your window type (vinyl, wood, aluminum) and how the glass is held in (stops, tape‑in, gasket) so we choose the right installation method.
   • Measure visible glass and overall IGU size; confirm glass thickness, spacer type/color, Low‑E location, and any gas fill to restore performance and clarity.
   • Match appearance details like internal grids, tint, and obscurity so the new glass blends in.
   • Check safety and code needs (tempered near doors, in baths, or low to the floor). Note special shapes/arches.
   • You get clear, written pricing and an expected timeline before you decide. Why accurate measurements matter and what happens if sizes are wrong.
2. Fabrication and order
   • We order a factory‑sealed IGU built to your specs from trusted manufacturers.
   • Typical lead times:
     • Standard clear or Low‑E/argon IGUs: about 5–10 business days.
     • Tempered, laminated, oversized panes, shapes/arches, internal grids, or specialty tints/coatings: often 10–20 business days.
   • Curious about pane choices? See Double‑Pane vs. Triple‑Pane.
   • We keep you updated as your unit moves through production so scheduling is easy.
3. Installation
   • When the glass arrives, we book a convenient time. Most homes take one visit, often 30–90 minutes per opening.
   • We remove the failed unit, prep the frame, set the new IGU with proper setting blocks, and reglaze or seal per manufacturer guidance before reinstalling stops.
   • See more on protection against leaks: How Window Installers Prevent Leaks and Water Intrusion.
4. Quality check
   • We verify a precise fit, correct Low‑E orientation, smooth operation, clean sightlines, and clear weep paths.
   • We clean the new glass and dispose of the failed unit responsibly, recycling where available.
5. Walk‑through
   • We review operation, simple Low‑E care tips, what to expect while sealants cure, and your product and workmanship warranty.
   • Have a question later? Call us—family‑owned help, no hard sell.

What can delay an order?

• Tempered or laminated safety requirements
• Oversized panes
• Shapes or arches and custom templates
• Internal grids and specialty patterns
• Specialty tints, coatings, or laminated interlayers
• Supplier constraints or severe weather

We’ll flag any of these at measurement so you can plan around them—and we’ll communicate proactively if timelines shift.

Schedule your free measurement

• Prefer to talk now? Call 314‑353‑8350.
• Request your visit now: Free Quote
• Curious what happens first? See What happens during a free window estimate?
• Want to get ready? Read Do I need to prepare my home before installation?
• See recent projects: Our Work

Now that you know the steps, explore glass and performance options that suit Missouri’s climate and your goals—and get your clear, efficient view back.

Glass and performance options for Missouri’s climate

You can upgrade your insulated glass unit (IGU) for Missouri’s hot summers and cold winters without replacing the whole window. During our free measurement visit, we’ll review choices and show samples so you can balance comfort, code, and cost. Prefer a quick ballpark first? Call 314‑353‑8350 or request a no‑pressure quote at viviano-inc.com/free-quote. Start with this overview: Replacement Window Glass Options Explained for Homeowners.

Low‑E glass for year‑round comfort

Modern Low‑E coatings help keep summer heat out, hold winter warmth in, cut glare, and filter UV that can fade floors and fabrics—without a dark tint. Tell us which rooms get the most sun; south‑ and west‑facing windows often benefit from a stronger Low‑E package. We’ll recommend options that fit your exposure and budget, and you can see the difference in person. Learn more: What is Low‑E glass and why is it important?, How New Windows Help Protect Floors and Furniture From UV Damage, and Do Replacement Windows Reduce Outside Noise?

Gas fills: argon or krypton

Most IGUs we replace use argon—it’s reliable, readily available, and well priced. Krypton is ideal for narrow air spaces or specific performance targets. We’ll price both so you can compare performance vs. cost and choose what makes sense for your home. See a comparison: Argon vs. Krypton Gas in Windows.

Safety and code glass where required

Certain locations require tempered or laminated safety glass, such as near doors, in bathrooms, or close to the floor. We identify code areas during measurement, quote the correct glass, and help you pass inspection the first time—no surprises. Details: What is tempered glass and when is it required?

Aesthetics and privacy choices

• Tints such as gray or bronze can soften brightness and reduce glare in sunny rooms.
• Obscure or textured patterns like rain, frosted, or satin add privacy without blocking natural light—great for bathrooms and street‑facing windows.
• We can match existing grids between the glass and specify the right glass thickness so the new unit fits your sash and blends with nearby windows. Bring a photo or an old grid sample, and we’ll take it from there.

Note: We match sightlines, glass color or reflectivity, and interior or exterior finishes wherever possible to preserve your home’s look. Availability can vary by size and manufacturer—our estimator will confirm options during your visit. See real‑world results in Our Work.

Choosing glass is only part of long‑term performance. The spacer and perimeter seals between panes also matter. Ask us about warm‑edge spacers and seal upgrades during your estimate to maximize durability and reduce the chance of fogging.

Have questions right now? Call 314‑353‑8350 (Mon–Fri, 8–4) or stop by our showroom at 7530 Watson Rd, Shrewsbury, MO. We’ll help you pick the right glass package—no pressure, just straight answers.

Why spacers and edge seals matter

In every insulated glass unit, the spacer and edge seal keep the panes evenly spaced, hold desiccant to manage moisture, and create an airtight bond that keeps insulating gas in and outside moisture out. When these parts are well designed and well made, you get clear views, stable performance, and longer service life. When they fail, gas escapes, moisture gets in, and you’ll see fogging, streaks, and lower efficiency. If you’re noticing any of those symptoms, we can inspect your unit, confirm a failed seal, and provide a straightforward, glass‑only replacement quote—often the most cost‑effective fix.

For Missouri’s climate, we often use warm‑edge spacer technology. Unlike traditional aluminum, warm‑edge systems reduce heat transfer at the glass edge. Inside edges stay warmer in winter and cooler in summer, which improves condensation resistance and reduces stress on the seal. Want to keep the look you love and cut down on future fogging? Ask us about warm‑edge options matched to your window brand and budget.

There is no one setup for every window. We specify spacer width, material, and seal system for your unit, sash pocket, and goals—whether you need grids matched, tempered or laminated safety glass, or a better U‑factor with the right gas fill. High‑quality IGUs typically use a dual‑seal approach, a PIB primary seal for gas retention plus a durable secondary seal, for long‑term clarity and efficiency. We’ll measure on site, review options with you, and give you a no‑pressure estimate before you decide.

The result is a glass unit built for your opening, not a generic substitute, installed with cost in mind. Ready for clear views again? Call 314‑353‑8350 or request a free, no‑pressure estimate. You can also stop by our showroom at 7530 Watson Rd, Shrewsbury, Mon–Fri, 8:00–4:00. Next, see how we tailor glass‑only replacements for homes and commercial properties with minimal disruption.

Residential and commercial glass‑only solutions

Fogged picture window at home? Cracked storefront panel at work? We replace the insulated glass unit (IGU) only, keeping your frame when it’s sound to save time and money. Start with a free, no‑pressure quote—call 314‑353‑8350 or request a Free Quote. We serve the greater St. Louis area.

For homeowners

• Match what you have (or upgrade). We can duplicate glass thickness, Low‑E coatings, grids, and tints so new panes blend in—or upgrade to higher‑efficiency options if you prefer.
• Careful work in furnished spaces. We protect floors and furniture and respect your home, pets, and schedule.
• Quick turnaround. Precise measurements on the first visit, then installation as soon as your unit is ready—straightforward pricing, no pushy upsells.
• Clean removal and disposal. We take out the failed IGU, haul it away, and leave the area tidy.
• Code‑aware recommendations. Tempered or laminated safety glass where required so you stay compliant.
• Honest advice. If your frame is failing, we’ll show you why and provide options—including full replacement—so you can choose what fits your budget.

For commercial and light‑commercial properties

• Property‑manager friendly. We coordinate site access, staging, and communication with owners, PMs, and HOAs.
• Minimal disruption. Installs planned around hours and foot traffic. Entrances kept open when possible.
• Safety and compliance. Trained, insured crews follow safety protocols. We specify tempered or laminated glass for doors, sidelites, and storefronts to meet code.
• Storefronts and offices. IGU replacement for aluminum storefront systems, office windows, and common areas, matching tint and reflectivity for a consistent facade.
• Documentation ready. Certificates of insurance available on request and clear, written proposals for easy approval.

As a family‑owned St. Louis dealer for 28+ years, we price the most cost‑effective fix first—often glass‑only—and we don’t use high‑pressure sales. Our trained, insured installers focus on clean, careful work. Ready to restore your view? Call 314‑353‑8350 (Mon–Fri, 8–4) or request your free on‑site measurement today.

Why Viviano Window & Door for IGU replacement

Family‑owned and operated in St. Louis for 28+ years, we’ve built Viviano Window & Door around clear pricing, solid workmanship, and local service. If your IGU is fogged, cracked, or failing, we’ll measure precisely, order the right insulated glass, and install it cleanly—often without replacing the entire window frame when that’s the smarter, more affordable fix. Call 314‑353‑8350 to schedule a no‑pressure assessment, request a free quote online, or stop by our showroom at 7530 Watson Rd. in Shrewsbury (Mon–Fri, 8:00 a.m.–4:00 p.m.). Explore more on our Windows & Doors page.

What sets us apart

• Straightforward pricing, no pressure. We keep overhead low, don’t pay commissions, and don’t push one‑call closes—just itemized options so you can choose repair vs. replacement with confidence.
• Professional installs. Trained, insured installers follow lead‑safe practices on homes built before 1978. Learn more: Lead‑paint regulations.
• Clear, written warranties. You receive the manufacturer’s glass warranty plus Viviano workmanship coverage. Details: Warranties.
• Local, responsive service. Need help after install? We’re right here in the St. Louis area and easy to reach at 314‑353‑8350.
• Repair‑first guidance. If glass‑only replacement makes sense, we’ll recommend it. If a full unit is the better long‑term value, we’ll explain why—no sales pressure.

Ready to restore clarity and efficiency? Call 314‑353‑8350, visit 7530 Watson Rd., or request your no‑pressure quote at viviano-inc.com/free-quote.

Before/after results and customer feedback

See the difference insulated glass replacement makes—without replacing your whole window. Fogged, streaked panes become clear again while your existing frame, trim, and siding stay in place. It’s a smart, value‑focused fix many St. Louis homeowners choose to restore views, comfort, and energy performance.

Before/after at a glance (common window types we service)

• Double‑hung windows: cloudy glass to clear views; sashes operate smoothly after reglazing and resealing.
• Sliding windows: haze and mineral trails gone; clean sightlines across wider openings and easier operation.
• Picture windows: restored clarity without disturbing interior trim or exterior finishes.
• Casement and awning windows: resealed IGUs maintain weather‑tight performance and reduce drafts.
• Bay and bow units: replace one failed panel or multiple lites to match the rest for a uniform look.
• Patio doors: cracked or fogged tempered IGUs swapped for clear, code‑compliant safety glass that slides smoothly.

What customers tell us

• “Our living room picture window went from milky to museum‑clear. You’d never know the glass was replaced—just the view is better.”
• “They priced glass‑only first, no pressure, and the turnaround was fast. Fair, straightforward, and the cleanup was spotless.”
• “Matched our existing Low‑E tint and grids perfectly. Looks original—only clearer.”
• “Friendly crew, on time, and the quote was exactly what we paid. Couldn’t be easier.”

Why homeowners choose Viviano for glass‑only fixes

• Family‑owned in St. Louis for 28+ years with professionally trained, insured installers
• No one‑call‑close tactics—just clear options and pricing (glass‑only first whenever it makes sense)
• Ability to match most Low‑E tints, grids, and safety requirements so everything looks consistent

Want to see more? Browse our Galleries and Our Work pages for additional examples and styles.

View Our Work

Ready to take the next step?

• Get transparent pricing below, including what affects cost and payment options.
• Prefer to talk now? Call 314‑353‑8350 (Mon–Fri, 8:00 a.m.–4:00 p.m.) for a free, no‑pressure quote.
• Rather start online? Request a Free Quote and we’ll follow up quickly with next steps.

Pricing, quotes, and payment options

Every insulated glass unit (IGU) we replace is custom‑made for your window, so pricing depends on a few details. We always look for the most economical path first—typically glass‑only when your existing frame and sash are in good shape—and we’ll recommend full window replacement only if damage or another issue makes it the better long‑term value. You’ll see your options and pricing side‑by‑side so you can choose what fits best.

What affects the price

• Overall glass size and thickness
• Performance options such as Low‑E coatings and argon or krypton gas fills
• Safety or code needs like tempered or laminated glass near doors, tubs, or stairs
• Decorative elements, including grids or muntins
• Specialty shapes or patterns, tints, or privacy glass
• Access and labor factors (for example, upper stories or difficult‑to‑reach openings)

What your quote includes

• On‑site measurement and condition check of the sash and frame
• Fabrication of a matching IGU to spec, including size, thickness, Low‑E, gas, grids, and shape
• Professional installation and proper sealing or reglazing
• Clean‑up and haul‑away of the old glass
• Written warranty details for both glass and workmanship
• Clear, itemized pricing with no surprise add‑ons

Ways to keep costs down

• Glass‑only replacement when the frame/sash are sound
• Choosing standard tints and grid patterns instead of specialty options
• Bundling multiple IGUs in a single service visit when possible
• Scheduling with other window work you’re planning

Ask us what makes the most sense for your home—we’re value‑focused by design: The Intersection of Price and Quality.

Free, no‑pressure estimates

• No high‑pressure or one‑call closes. Start with a free visit and clear, itemized pricing.
• Learn more: Are free estimates and consultations offered?
• Check current promotions: Specials

Payment and financing

• How billing works: How do I pay for new windows?
• Financing options and eligibility: Financing options
• Payment methods and plans: Payment methods

Ready for a price? Call 314‑353‑8350 or request a Free Quote. Prefer to talk in person? Visit our showroom at 7530 Watson Rd, Shrewsbury, MO 63119, Monday–Friday, 8:00 a.m.–4:00 p.m. See where we provide service across the St. Louis metro below.

Proudly serving the St. Louis metro

From our Shrewsbury showroom at 7530 Watson Rd., we handle on‑site insulated glass measurements and replacements across the greater St. Louis area—performed by professionally trained, insured installers. You’ll get straightforward, no‑pressure pricing and clear communication from start to finish.

Our core service area includes the City of St. Louis, St. Louis County, and St. Charles County, with service to parts of Jefferson County (MO) and portions of Madison and St. Clair Counties (IL) as scheduling allows.

Common stops include:

• Shrewsbury, Webster Groves, Kirkwood, Affton, Maplewood, Brentwood, Clayton
• Ballwin, Chesterfield, Creve Coeur, University City, Fenton, Florissant
• St. Charles, St. Peters, O’Fallon

Nearby but don’t see your area listed? Call 314‑353‑8350 Monday–Friday, 8:00 a.m.–4:00 p.m., to confirm availability and request a free on‑site estimate. Prefer online? Request your quote anytime at viviano-inc.com/free-quote. Or stop by our Shrewsbury showroom to review glass options in person. Below are answers to common pre‑purchase questions.

Insulated glass replacement FAQs

Can you match my existing tint, grids, and thickness? Yes, in most cases. We order a custom IGU to your exact size, overall thickness, airspace, spacer color, Low‑E tint, and grid pattern—so your new glass blends in with the rest of your home. During measurement we verify all details and note any discontinued patterns or rare tints. If an exact match isn’t available, we’ll show you the closest option for approval before ordering. Want to be sure? Bring a quick photo to your estimate or our showroom and we’ll review samples together.

How long does it take? Standard clear or Low‑E IGUs are usually ready in about 5–10 business days after measurement approval. Tempered or laminated safety glass, shaped units, oversized pieces, triple‑pane, or IGUs with internal grids can take longer, often 10–20 business days. Once the glass arrives, installation is typically done in a single visit. Weather and supplier schedules can affect timelines—but we set expectations up front and keep you updated. Prefer a specific day? Tell us at the estimate and we’ll aim for it.

When is tempered or laminated required? Safety glazing is required by code in specific locations such as near doors, in bathrooms and showers, at low sills, and around stairs or large panels. We handle the code check for you during the estimate and recommend the correct glass so your project passes inspection the first time. More detail: What is tempered glass and when is it required? and When do building codes require tempered windows?

Will replacement damage my trim or drywall? Glass‑only replacement is designed to minimize disturbance. We work within the existing sash and remove or reinstall glazing stops or beads, use drop cloths, and clean up before we leave. Minor paint or caulk touch‑ups may be recommended if materials are brittle or aged. Learn more: Will Window Replacement Damage Interior Trim or Drywall?

What if my window type can’t be reglazed? Some factory‑sealed or welded sashes can’t be serviced for IGU‑only replacement. If so, we’ll explain options and price the most economical path, which may be a sash‑only or full‑unit replacement. We price glass‑only first when it’s safe and code‑compliant—no pressure, just clear choices. Learn about one alternative: Sash Replacement Kits.

Will new glass improve energy performance? Yes. Upgrading to modern Low‑E coatings with argon gas and a warm‑edge spacer can improve comfort, reduce heat transfer, and cut UV exposure. Actual savings vary, and whole‑window efficiency also depends on the frame and air sealing. Energy Star labels apply to complete window units, not glass alone. Want to compare options? We can quote standard vs. upgraded glass side‑by‑side. For performance info: Are replacement windows Energy Star approved?, What is the National Fenestration Rating Council (NFRC) rating?, Replacement Window Glass Options Explained, and Double‑Pane vs. Triple‑Pane.

What happens to my old glass? We remove the failed unit and handle disposal, with materials routed to recycling through our vendors when possible. It’s included in your estimate—no extra trip for you. Related info: What happens to my old windows after replacement?

Have a question we didn’t cover or want pricing now? Call 314‑353‑8350, request a free quote, or stop by our family‑owned showroom at 7530 Watson Rd., Shrewsbury, MO. Open Monday–Friday, 8:00 a.m.–4:00 p.m. No high‑pressure sales—just straightforward options to get your view clear again.

Ready to see clearly again? Get your free, no‑pressure quote.

We make it easy to get a straight answer and a fair price—without the sales push. First, we’ll check whether your window qualifies for glass‑only insulated glass (IGU) replacement; when it does, that’s the first price you’ll see. If a full window replacement is the smarter long‑term fix, we’ll explain why and lay out clear options so you can choose what fits your home and budget.

• Call 314‑353‑8350 for friendly help and fast scheduling with a local, family‑owned team.
• Prefer online? Request a Free Quote and upload photos and rough sizes (close‑ups of fogging, cracks, or labels help us price faster).
• Stop by our showroom: 7530 Watson Rd, Shrewsbury, MO 63119. Hours: Monday–Friday, 8:00 a.m.–4:00 p.m. See glass options and talk through your project one‑on‑one.
• Email works too through the Contact Us page—we’ll reply promptly during business hours.

Get My Free Quote See Our Work View Specials

There’s no obligation—and never any commissioned sales. Just honest answers, energy‑smart recommendations, and fair, value‑driven pricing for St. Louis homeowners.