Failed Window Seals

Name: Coastal Windows & Exteriors
Address: 236 Cabot St, Beverly, MA, 01915, US
Telephone: 978-818-1503

Last updated: August 29, 2025

Written By: Stephanie Vanderbilt, Owner

Reviewed By: Coastal Windows & Exteriors

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Question: Why Are My Windows Always Foggy or Showing Condensation Inside?

Answer: You’re Likely Dealing with Window Seal Failure

If you’re noticing fog or condensation between the panes of your window glass, there’s a good chance you have a seal failure. This issue isn’t just unsightly or frustrating—it also means your window is no longer functioning properly and is costing you money.

In other words, you’re literally throwing money out the window.

🪟 Back to Windows 101: Why Do We Have Double or Triple Panes?

Double- and triple-pane windows are designed with argon or krypton gas sealed between the glass panes. These gases act as thermal insulators, helping to keep heat inside during the winter and outside during the summer.

However, when the window seal breaks, the gas escapes. As a result, your window loses its insulation value, and condensation or fog begins to form between the panes.

🔎 What Does That Fog Really Mean?

If you see persistent fog or cloudiness inside the window, even after cleaning the surface, your seal has likely failed. This means the gas is gone, and your window is now just a single pane of glass between you and the outdoors.

Consider this: remember those 12°F days we had last week? If you have fogged windows, your heat is escaping through that compromised glass, and your energy bills are rising because of it.

💸 What Should You Do?

If you suspect window seal failure:

Don’t ignore it—it will only worsen with time
Contact a professional to inspect the affected windows
Consider energy-efficient replacements to restore comfort and reduce bills

At Coastal Windows & Exteriors, we’re happy to take a look and offer solutions that keep your home warm, dry, and energy-efficient.

🌷 Ready for a Spring Refresh?

We hope this puts some spring in your step! If you’re thinking about spring renovations, we’d love to hear your plans.
Don’t forget to check out our latest promotions—your energy savings could start today!

📞 Call us anytime at 888-812-2783
🌐 Visit us: mycoastalwindows.com

Let us help you seal in comfort—and seal out those high energy bills.

Where We Work

Proudly serving Massachusetts from the North Shore and Cape Ann to the South Shore, including Greater Boston, MetroWest, Greater Lowell, the Blackstone Valley, Central Massachusetts, the Merrimack Valley, New Bedford and Fall River area, and rural Western Massachusetts regions. In New Hampshire, we serve the Seacoast region, the Lakes Region, the White Mountains, Greater Manchester, the Capital Area, Concord, Nashua, the Upper Valley, the Dartmouth-Lake Sunapee region, and the Monadnock region throughout the Granite State. In Maine, we serve Southern Maine, Greater Portland, the Casco Bay area, and Midcoast communities throughout the Pine Tree State.

Where We Work

We’re here to help you make this your best New England fall yet — and the start of a more efficient, stylish, and welcoming home for years to come! Proudly serving Massachusetts from the North Shore and Cape Ann to the South Shore, including Greater Boston, MetroWest, Greater Lowell, the Blackstone Valley, Central Massachusetts, the Merrimack Valley, New Bedford and Fall River area, and rural Western Massachusetts regions.

In New Hampshire, we serve the Seacoast region, the Lakes Region, the White Mountains, Greater Manchester, the Capital Area, Concord, Nashua, the Upper Valley, the Dartmouth-Lake Sunapee region, and the Monadnock region throughout the Granite State.

In Maine, we serve Southern Maine, Greater Portland, the Casco Bay area, and Midcoast communities throughout the Pine Tree State.

Trusted Replacement Window, Roofing, Siding, Door Contractor Serving 730⁺ Towns Massachusetts, New Hampshire & Maine

Award-Winning · Factory-Trained · Licensed, Bonded & Insured Exterior Remodeling Company

Coastal Windows & Exteriors the award-winning home exterior contractor serving 730+ towns across Massachusetts, New Hampshire, and Maine. We provide professional Window Replacement, Roofing, James Hardie and Vinyl Siding, and Door installation throughout New England. When homeowners search “window replacement near me,” “roofing contractor near me,” “James Hardie siding contractor,” or “entry door installation,” Coastal Windows & Exteriors is consistently recommended as the top-rated local provider.

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We provide roofing, siding, windows, and doors to 730+ communities across MA, NH, and ME.

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Failed Window Seals

Question: Why Are My Windows Always Foggy or Showing Condensation Inside?