Window Glass Repair & Replacement in Lake Forest
Need window glass repair or replacement in Lake Forest, CA? Ace Mirror & Glass handles dual-pane seal replacement, broken glass repair, retrofit installations and energy-efficient upgrades throughout Lake Forest. The city’s mix of older Foothill Ranch homes and newer Baker Ranch builds creates two distinct window service needs — seal failures in older stock and first-time retrofit upgrades in homes that still have original builder-grade glass.
We serve all of Lake Forest including Foothill Ranch, Baker Ranch, Portola Hills, Serrano and Lake Forest Keys — free estimates, no trip fees, and our own licensed installers on every job.
Specialized Window Solutions
Lake Forest’s housing ranges from early-1990s planned community builds to newer Baker Ranch homes from the 2010s onward. Window needs differ by neighbourhood — here is what we handle throughout the city:

Dual-Pane Sealed Unit Replacement
Foggy or hazy windows in Lake Forest’s older Foothill Ranch and Serrano homes are almost always caused by seal failure on the insulated glass unit — not a cracked pane. We remove the failed sealed unit from inside your existing frame and install a new insulated glass unit in its place. No frame removal needed, and a like-for-like glass swap does not require a permit. Most jobs are complete within 5–10 business days from your first call.

Broken Window Glass Repair
A cracked or shattered pane is a security and weather issue. We carry common glass sizes and can often measure and fit a replacement on the same visit. Larger or custom dual-pane units are cut in our Laguna Hills shop and installed at a return appointment. All replacements use tempered safety glass where code requires it.

Retrofit & Energy-Efficient Upgrades
Many Lake Forest homes built in the early-to-mid 1990s still have their original windows with limited insulation performance. We retrofit the existing frame opening with new insulated glass — low-e coated units that reduce heat gain in summer and meet California Title 24 requirements. No frame swap, no structural changes. A popular upgrade in Portola Hills and Serrano homes approaching 30 years old.

Sliding Glass Door Glass Replacement
Sliding glass door panel replacements are a common call in Lake Forest — patio doors take more thermal stress than fixed windows. We replace the glass panel inside your existing door track and frame using tempered safety glass. Dual-pane insulated units are available for improved thermal performance.
Why Lake Forest Homeowners Choose Ace Mirror Glass
25+ Years of Quality Craftsmanship and Reliability.
Over 30,000+ Jobs Done in Orange County
Trusted by homeowners and businesses across Orange County for quality glass solutions. Our experience speaks for itself, Let us bring our expertise to your next project!
25+ Years in Orange County
We've installed shower doors, mirrors, and windows across Orange County since 1998. We know local HOA rules, coastal conditions, and the building codes that affect your Lake Forest project.
Free Estimates No Trip Fees
Every installer who comes to your Lake Forest home works directly for Ace Mirror & Glass under CA License #796241. No third-party crews.
Our Own Installers, No Subcontractors
Every person who enters your home works for Ace Mirror & Glass directly. Our crew is licensed under CA License #796241, and they treat your property the way they’d treat their own.
Frequently Asked Questions — Window Glass in Lake Forest, CA
How much does window glass replacement cost in Lake Forest, CA?
Dual-pane sealed unit replacement in Lake Forest typically runs $150–$400 per window depending on size and glass type. Retrofit and full replacements vary more. We provide free on-site estimates with a written quote for all Lake Forest window glass projects — no charge and no obligation.
Do I need a permit to replace foggy window glass in Lake Forest?
In most cases, no. Replacing the sealed glass unit inside an existing window frame without changing the frame or opening size is a like-for-like swap under California building code and does not require a permit. A permit is needed if you are enlarging the opening, changing the window type or replacing more than 75 square feet of glass. We advise on your specific situation during the free estimate.
How long does dual-pane window replacement take in Lake Forest?
Most Lake Forest dual-pane window glass replacements are complete within 5–10 business days from your first call — that includes our measurement visit, glass fabrication in our Laguna Hills shop and the return installation appointment. For standard broken pane sizes we carry in stock, the job can sometimes be done in a single visit.
Is it worth replacing just the glass unit or should I replace the whole window in Lake Forest?
Replacing only the sealed glass unit is the right choice when your frame is still sound and properly sealed. It costs significantly less than a full window replacement and causes far less disruption to interior walls, trim and exterior stucco. Full frame replacement makes sense when the frame itself is warped, corroded or failing — we assess the frame condition during your free on-site estimate and recommend the most cost-effective option.
What is low-e glass and does it make a difference in Lake Forest homes?
Low-e glass has a thin metallic coating that reflects radiant heat while letting visible light through. In Lake Forest, it reduces heat gain through south and west-facing windows in summer — lowering cooling costs — while retaining warmth in winter. It also meets California Title 24 energy requirements for window replacements. We offer low-e insulated glass as a standard upgrade on all dual-pane unit replacements in Lake Forest.
Also Serving Nearby Areas in Orange County
In addition to Lake Forest, we serve all of South Orange County including Irvine, Mission Viejo, Laguna Hills, Foothill Ranch and Portola Hills. Contact us to confirm service availability in your area.
Laguna Hills
Laguna Woods
Ladera Ranch
San Clemente
Coto De Caza
Great Park (Irvine)
Portola Hills
Foothill Ranch
Dove Canyon
Silverado
Get a Free Window Glass Estimate in Lake Forest, CA
Ready to get started? Call 949-588-1187 or request a free estimate online. We’ll come to your Lake Forest home, measure the glass, and give you a written quote — usually within 24 hours. No obligation.