Double Pane & Insulated Glass Replacement
in Boca Raton, FL
When a double pane or insulated glass window fails — cracked glass, a broken seal, or a fogged unit that cannot be repaired — the answer is not always a full window replacement. In most cases, the frame is perfectly sound. What needs to go is the glass unit inside it.
Atlantic Window Repair replaces insulated glass units (IGUs) in existing frames across Boca Raton and South Florida. We remove the failed double pane unit and install a new one matched to your window's specifications — restoring clarity, insulation, and in impact-rated windows, hurricane protection. Your frames stay. Your cost stays reasonable.
Serving Boca Raton, Delray Beach, Boynton Beach, Pompano Beach, Deerfield Beach, Parkland, Lake Worth, Highland Beach, and surrounding communities.
BOOK YOUR FREE ESTIMATE
Double Pane and Insulated Glass: The Same Thing, Two Names
The terms are used interchangeably — and for good reason. A double pane window is an insulated glass unit (IGU): two panes of glass separated by a sealed cavity filled with dry air or inert gas, typically argon. That sealed cavity is what gives the window its thermal insulating value.
"Double pane" is the term most homeowners use. "Insulated glass" or "IGU" is the term contractors and manufacturers use. Both refer to the same sealed assembly. When either term appears in a search or on an estimate, the product and the work involved are the same.
What matters is what happens when that sealed unit fails — and in South Florida, it fails faster than most manufacturers' ratings suggest.
Why Insulated Glass Units Fail in South Florida
The sealed cavity inside a double pane window is its most vulnerable component. The seal is designed to last, but South Florida's climate applies stresses that most seal materials were not engineered to handle:
- Intense UV radiation breaks down seal compounds year-round — there is no off-season in Boca Raton
- Daily thermal cycling causes the glass to expand and contract, fatiguing the seal at the edges over time
- High ambient humidity puts constant pressure on the seal from the outside
- Salt air in coastal areas corrodes the metal spacer bar and accelerates seal degradation
When the seal fails, the insulating gas escapes and outside air — carrying moisture — enters the cavity. The result is fogging, mineral deposits on the inner glass surfaces, and a window that has lost most of its thermal performance. If the glass itself is cracked or broken, the unit needs replacement regardless of seal condition.
When Double Pane or Insulated Glass Replacement Is the Right Call
Not every double pane problem requires replacing the glass unit. But replacement is the correct solution when:
- The glass is cracked, chipped, or shattered — from impact, storm debris, or thermal stress
- The seal has failed and fogging is too advanced to respond to defogging repair
- Mineral deposits have permanently etched the inner glass surfaces
- The existing insulated glass unit lacks Low-E coating and you want to upgrade energy performance without replacing the entire window
- The unit is impact-rated and the glass has been compromised — restoring hurricane protection requires a new certified IGU
- The insulated glass unit is simply at end of life and a permanent solution is needed
If you are unsure whether replacement is warranted, our technicians assess each window on-site before recommending a course of action. We do not default to replacement when a repair will hold.
What the Replacement Process Looks Like
- Step 1 — Free on-site estimate. We inspect the window, evaluate the glass and frame condition, and confirm whether glass-only replacement is viable. You receive a clear quote before any work begins.
- Step 2 — IGU sourcing. We source a replacement insulated glass unit matched to your window's dimensions, glass type, and performance specs — including Low-E coatings, argon fill, or impact ratings where applicable.
- Step 3 — Removal and installation. We remove the failed double pane unit from the existing frame, prepare the frame opening, and install the new IGU with proper glazing and sealing. The work area is cleaned before we leave.
- Step 4 — Verification. We check the seal, fit, and appearance of every replaced unit before the job is complete.
Most single-window replacements are completed in one visit. Multi-window jobs are scheduled to minimize disruption and confirmed in advance.
Insulated Glass in South Florida: What Homeowners Should Know
Double pane and insulated glass windows are standard in South Florida homes built or renovated in the past two decades. They offer meaningful advantages in a hot, humid climate — reduced heat gain, lower AC load, and better noise attenuation. But the sealed unit will eventually fail, and South Florida's climate accelerates that timeline significantly.
Homes in Boca Raton and along the Palm Beach County coast face higher salt air exposure and tend to see IGU seal failure sooner than manufacturer ratings suggest. Homes with west-facing windows receive the most thermal stress from afternoon sun and typically show seal degradation earlier than other orientations.
Replacing a failed insulated glass unit promptly — rather than deferring the repair — is the more cost-effective long-term decision. A broken seal left in place allows moisture into the frame and sill over time, compounding the eventual repair cost. If the window is also impact-rated, a compromised IGU means your hurricane protection is no longer intact.
Why South Florida Homeowners Choose Atlantic Window Repair
IGU Replacement Only
Save your frames when they are sound — no full window tear-out
In-House Team Only
Seven licensed master technicians, no subcontractors
Exact Spec Matching
Including impact ratings and Low-E coatings
In-House Woodworking
Frame or sill damage addressed in the same visit
6+ Years Serving
Boca Raton and South Florida communities
Free Estimate
On-site assessment with no obligation
Frequently Asked Questions
What is the difference between double pane and insulated glass?
There is no practical difference. Both terms refer to the same product: a sealed glass assembly with two panes and an insulating cavity between them. "Double pane" is the common consumer term; "insulated glass" or "IGU" is the industry term. The replacement process is identical regardless of which term you use.
Can I replace just the glass unit, or do I need a whole new window?
In most cases, you can replace just the insulated glass unit. If your frame is structurally sound, we remove the failed IGU and install a new one in the existing frame. This is considerably less expensive than a full window replacement and produces the same result in terms of thermal performance and appearance.
Can you match the glass specs of my existing windows — including Low-E or impact glass?
Yes. We source replacement IGUs to match your existing specifications as closely as possible — Low-E coatings, argon or air fill, glass thickness, and impact ratings. If you want to upgrade to a higher-performance glass at the same time, we can discuss that option during the estimate.
My window is impact-rated. Can you replace the insulated glass unit and maintain hurricane certification?
Yes. We source certified impact glass units that meet Florida Building Code and Miami-Dade NOA requirements. Replacing the failed IGU with a certified unit restores the window's hurricane protection. We do not substitute non-certified glass in impact-rated windows.
How long does double pane glass replacement take?
Most single-window replacements are completed in one visit. Multi-window jobs are typically completed within one to two days depending on scope. We confirm the timeline before starting any work.
What if the frame is also damaged from moisture?
If a failed insulated glass unit has caused rot or damage to a wood frame or sill, our in-house woodworking workshop can address that in the same service visit. We assess frame condition during the initial estimate and include any necessary woodwork in the quote.
Get a Free Estimate for Your Double Pane or Insulated Glass Replacement
A failed double pane or insulated glass unit does not improve on its own — and in South Florida, leaving it in place means ongoing heat gain, higher energy bills, and potential moisture damage to the surrounding frame. Call us or send a message to book your free on-site estimate. We will tell you exactly what your windows need and give you a clear quote before any work begins.
Service Area
Serving South Florida's tri-county region with certified insulated glass replacement
Palm Beach County
Boca Raton · Delray Beach · Boynton Beach · Lake Worth · Highland Beach · Parkland
Broward County
Pompano Beach · Deerfield Beach · and surrounding communities
Miami-Dade County
Select service areas — contact us to confirm coverage