Nassau · Suffolk · North & South Fork
Window Glass Replacement on Long Island
Free on-site estimate. Licensed and insured in Nassau and Suffolk, with offices in Manhasset and Hauppauge.
A cracked, shattered, or foggy window isn't just an eyesore, it's a safety risk, an energy drain, and a security vulnerability.
Whether a stress crack appeared in a double-pane unit, or your insulated glass has been clouded with condensation, the fix is the same: professional glass replacement by technicians who measure precisely, and install correctly the first time.
Whether a stress crack appeared in a double-pane unit, or your insulated glass has been clouded with condensation, the fix is the same: professional glass replacement by technicians who measure precisely, and install correctly the first time.
At Prestige Window Works, we provide window glass replacement throughout Long Island, NY, serving homeowners and businesses across Nassau County and Suffolk County.
We handle every type of residential glass: single-pane, double-pane insulated glass units (IGUs), tempered safety glass, laminated glass, obscure privacy glass, and specialty pattern glass.
We handle every type of residential glass: single-pane, double-pane insulated glass units (IGUs), tempered safety glass, laminated glass, obscure privacy glass, and specialty pattern glass.
Professional and affordable window glass replacement across Long Island, NY (Nassau & Suffolk County). Single-pane, double-pane & IGU units. Cracked, foggy or broken glass fixed fast.
4.9★649+ Google reviews
A+BBB accredited
LicensedNassau & Suffolk, fully insured
5 & 10 yrwarranties on wood and glass units
Where we do this work
All over Nassau and Suffolk, from our offices in Manhasset and Hauppauge out to the Hamptons and the North Fork.
Nassau County →
Garden City · Massapequa · Rockville Centre · Great Neck · Port Washington · Merrick
The East End →
The Hamptons, Sag Harbor, the North Fork, Greenport and Riverhead
4.9 stars from 649+ Google reviews
What homeowners say
I had 2 windows that had a broken seal. I struggled finding someone to fix them. Prestige was very professional from estimation to installation. I'm looking through perfectly clear and clean windows for the first time in over a year! Thank you!
Carol LucitoTerrific glass replacement Job! Windows look like new, at a fraction of new windows. Max did an excellent job.
Anthony RuoccoWe used Prestige twice in the past few month. They replaced a defective window pane and a few months later replaced an entire window unit in another room. We are very satisfied with their workmanship and would recommend using them.
Barry GluckCommon Reasons for Glass Replacement in Long Island, NY
Maintaining the integrity of your home’s exterior is a constant priority for Long Island residents. Due to the region's unique geography and volatile seasonal shifts, homeowners often face specific challenges that necessitate professional glass services.
Foggy or cloudy glass
This is the most common call we receive. The seal on your double-pane unit has failed and moisture is trapped inside. Cleaning does nothing. The only fix is IGU replacement.
Cracked glass
Stress cracks, impact cracks, and thermal cracks all spread over time. A crack that runs halfway across a pane today will reach the frame by next winter. Cold temperatures accelerate cracking significantly in Long Island winters.
Shattered or broken glass
Whether from impact, storm damage, or vandalism. We treat broken glass as urgent and prioritize same-day or next-day appointments for safety and security reasons.
Scratched glass
Deep scratches from improper cleaning, construction activity, or attempted break-ins. Depending on the depth and location, we assess whether polishing is viable or replacement is the better option.
Condensation
Not same as foggy glass. Condensation on the room-facing surface of your glass means the glass is too cold, which means your insulation has failed. In winter, this is often a sign that your IGU's argon fill has escaped and the unit needs replacement.
Upgrading for energy efficiency
Homeowners replacing original single-pane glass with new double-pane units, or upgrading older double-pane units with Low-E coated glass that reduces heat gain in summer and heat loss in winter.
This is especially popular in Bellmore, Wantagh, Seaford, and Massapequa Park where homeowners are actively working to reduce energy costs.
This is especially popular in Bellmore, Wantagh, Seaford, and Massapequa Park where homeowners are actively working to reduce energy costs.
Types of Glass We Replace
Not all glass is the same, and not all glass problems have the same solution. Here is exactly what we replace and why each type matters:
Double-Pane Insulated Glass Units (IGUs)
Double-pane glass is the standard in most Long Island homes built after 1985. Two panes of glass are sealed together with a spacer bar and an argon or krypton gas fill between them. When the seal fails (which it will eventually, typically after 15–25 years) moisture enters the space between the panes and creates the foggy or cloudy appearance that can't be wiped away. The solution is IGU replacement: we remove the failed unit, measure the opening precisely, and install a new factory-sealed unit with a fresh gas fill and a 10-year warranty.
IGU failure is extremely common across Long Island, particularly in communities with older housing stock like Rockville Centre, Valley Stream, Lynbrook, and Freeport where double-pane windows from the 1990s are now reaching end-of-seal-life in significant numbers.
Single-Pane Glass
Older Long Island homes, particularly pre-1970 properties common in Glen Cove, Sea Cliff, Locust Valley, and throughout Nassau County's North Shore, often still have original single-pane wood-framed windows. We cut replacement glass to the exact dimensions of the opening, bed it in fresh glazing compound, and seal it properly. See our window reglazing service for more on the glazing process.
Tempered Safety Glass
Tempered glass is required by building code in specific locations: doors, sidelights, windows adjacent to doors, bathroom windows, and any window within 18 inches of the floor. When tempered glass breaks, it shatters into small rounded fragments rather than dangerous shards, which is why the code requires it in high-risk locations. We supply and install tempered glass to code specifications for all applications. See our side light glass replacement service for entry-area glass work.
Laminated and Safety Glass
Laminated glass has a plastic interlayer bonded between two panes. When broken, it holds together rather than shatterin, making it the glass of choice for hurricane-rated windows, skylights, and security applications. We supply and install laminated glass for homeowners in coastal communities including Long Beach, Atlantic Beach, Point Lookout, and along the South Shore who want improved storm protection without replacing entire window units.
Obscure and Pattern Glass
Bathrooms, entry doors, sidelights, and privacy applications frequently use textured or frosted glass that allows light while blocking visibility. We stock and install all major pattern types including reeded, rain texture, glue chip, aquatex, and spraylite. See our full pattern glass types page for the complete range we carry.
Mirrors
We cut and install replacement mirrors for bathrooms, closets, and decorative applications throughout Long Island. Custom sizes available.
Double-Pane Insulated Glass Units (IGUs)
Double-pane glass is the standard in most Long Island homes built after 1985. Two panes of glass are sealed together with a spacer bar and an argon or krypton gas fill between them. When the seal fails (which it will eventually, typically after 15–25 years) moisture enters the space between the panes and creates the foggy or cloudy appearance that can't be wiped away. The solution is IGU replacement: we remove the failed unit, measure the opening precisely, and install a new factory-sealed unit with a fresh gas fill and a 10-year warranty.
IGU failure is extremely common across Long Island, particularly in communities with older housing stock like Rockville Centre, Valley Stream, Lynbrook, and Freeport where double-pane windows from the 1990s are now reaching end-of-seal-life in significant numbers.
Single-Pane Glass
Older Long Island homes, particularly pre-1970 properties common in Glen Cove, Sea Cliff, Locust Valley, and throughout Nassau County's North Shore, often still have original single-pane wood-framed windows. We cut replacement glass to the exact dimensions of the opening, bed it in fresh glazing compound, and seal it properly. See our window reglazing service for more on the glazing process.
Tempered Safety Glass
Tempered glass is required by building code in specific locations: doors, sidelights, windows adjacent to doors, bathroom windows, and any window within 18 inches of the floor. When tempered glass breaks, it shatters into small rounded fragments rather than dangerous shards, which is why the code requires it in high-risk locations. We supply and install tempered glass to code specifications for all applications. See our side light glass replacement service for entry-area glass work.
Laminated and Safety Glass
Laminated glass has a plastic interlayer bonded between two panes. When broken, it holds together rather than shatterin, making it the glass of choice for hurricane-rated windows, skylights, and security applications. We supply and install laminated glass for homeowners in coastal communities including Long Beach, Atlantic Beach, Point Lookout, and along the South Shore who want improved storm protection without replacing entire window units.
Obscure and Pattern Glass
Bathrooms, entry doors, sidelights, and privacy applications frequently use textured or frosted glass that allows light while blocking visibility. We stock and install all major pattern types including reeded, rain texture, glue chip, aquatex, and spraylite. See our full pattern glass types page for the complete range we carry.
Mirrors
We cut and install replacement mirrors for bathrooms, closets, and decorative applications throughout Long Island. Custom sizes available.
Glass Replacement for All Window Brands
We replace glass in windows and doors made by every major manufacturer. Our technicians are familiar with the frame systems, sash dimensions, and glass specifications used by each brand, which means accurate measurements and correctly specified glass units every time:
Integrity windows: wood-clad units with specific IGU profiles
Superseal windows: common in Long Island new construction
Peachtree windows, including legacy units no longer in production
Visions windows: vinyl-framed units throughout Nassau and Suffolk
Guardian / SunGuard windows: commercial and residential glass units
Gerkin windows: vinyl and fiberglass frame units
Therma-Tru doors: glass panel replacement in entry doors
Rockwell windows: double-pane and IGU replacement
All other residential and commercial window brands
Integrity windows: wood-clad units with specific IGU profiles
Superseal windows: common in Long Island new construction
Peachtree windows, including legacy units no longer in production
Visions windows: vinyl-framed units throughout Nassau and Suffolk
Guardian / SunGuard windows: commercial and residential glass units
Gerkin windows: vinyl and fiberglass frame units
Therma-Tru doors: glass panel replacement in entry doors
Rockwell windows: double-pane and IGU replacement
All other residential and commercial window brands
Glass Replacement Across Nassau and Suffolk County
We provide window glass replacement throughout Long Island from our two service offices:
Our Manhasset office covers Nassau County, including: Rockville Centre · Valley Stream · Lynbrook · Freeport · Glen Cove · Locust Valley · Sea Cliff · Long Beach · Atlantic Beach · Bellmore · Wantagh · Seaford
Our Hauppauge office covers Suffolk County, including: Northport · Merrick · Point Lookout · Massapequa Park · Bellport · Port Jefferson · Setauket · Islip · West Islip · Holbrook · Selden · Lake Grove
Not sure if we cover your area? Call 516-908-8005. We serve all of Long Island.
Our Manhasset office covers Nassau County, including: Rockville Centre · Valley Stream · Lynbrook · Freeport · Glen Cove · Locust Valley · Sea Cliff · Long Beach · Atlantic Beach · Bellmore · Wantagh · Seaford
Our Hauppauge office covers Suffolk County, including: Northport · Merrick · Point Lookout · Massapequa Park · Bellport · Port Jefferson · Setauket · Islip · West Islip · Holbrook · Selden · Lake Grove
Not sure if we cover your area? Call 516-908-8005. We serve all of Long Island.
THE MOST POPULAR QUESTIONS
How much does glass replacement cost in Long Island, NY?
The cost of glass replacement depends on the window type and frame material. For standard residential units, Double-Hung glass typically would cost less than for larger Picture windows. Smaller glass surfaces, such as Basement or Hopper windows, are more affordable. We can often give you a ballpark over the phone for standard sizes, and we provide a precise written quote on-site before any work begins.
Can you replace just the glass without replacing the whole window?
Yes, in the vast majority of cases. As long as the frame is in sound condition, there is no reason to replace the entire window just because the glass has failed. Glass-only replacement costs a fraction of full window replacement and is exactly what we do.
How long does glass replacement take?
For standard single-pane replacement and most double-pane jobs where we carry stock glass, work is completed in 1–2 hours. For non-standard IGU sizes, tempered, or laminated units that need to be ordered, we do the measurement visit first, then return for installation once the glass arrives, typically 3–7 business days later.
My double-pane window is foggy inside. Do I need to replace the whole window?
No. Foggy glass between the panes means the IGU seal has failed, but the frame is almost always fine. We replace the glass unit only, leaving your existing frame in place. This is sometimes called "glass-only replacement" and costs significantly less than full window replacement.
Do you replace glass in doors as well as windows?
Yes, including entry door glass panels, French door glass, sliding door glass, and sidelight panels. See our side light glass replacement service for entry area glass. For French door and sliding door glass, those window type pages cover the specifics.
What is Low-E glass and should I upgrade to it?
Low-E (low emissivity) glass has a microscopically thin metallic coating that reflects infrared heat. In summer it keeps solar heat out; in winter it keeps interior heat in. When replacing failed IGUs, we offer Low-E coated units as an upgrade over standard clear glass, particularly recommended for south and west-facing windows that receive direct afternoon sun. Homes in Merrick, Bellmore, and Wantagh on Long Island's South Shore see especially good results with Low-E upgrades due to strong afternoon sun exposure.
Is your glass replacement covered by warranty?
Yes. All IGU installations carry a 10-year warranty: the strongest warranty we offer on any service. Single-pane and specialty glass installations are covered by our standard 5-year workmanship warranty.
How much is a replacement window pane?
A single pane or glass unit starts at $300 installed. The price rises with size, tempered or Low-E glass and grids; we give you the exact figure after measuring.
Is it cheaper to replace window pane or replace window?
Yes. In most windows and doors we replace only the broken pane or glass unit and keep your frame, sash and hardware. Glass replacement starts at $300.
What can I do if someone breaks my window?
Make it safe first: tape or board the opening and keep people away from the glass. Then call us; emergency glass replacement is one of our main services. If it was vandalism, file a police report for your insurer.