Glass Replacement

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 baseball came through a pane in Merrick, a stress crack appeared in a double-pane unit in Northport, or your insulated glass has been clouded with condensation for years, the fix is the same: professional glass replacement by technicians who measure precisely, cut to specification, 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.

Our 10-year warranty on all IGU installations is one of the strongest guarantees in the industry. Most glass replacements are completed in a single visit.

Call 516-908-8005 for a free estimate — we can often give you a price over the phone for standard glass sizes.

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 shattering — 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.

Common Reasons Long Island Homeowners Call Us for Glass Replacement

Foggy or cloudy glass between the panes — 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 on the interior glass surface — this is different from foggy glass between panes. 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.

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

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.