Common Window & Door Problems and Fixes | Stay Glassy Ep. 13

Your windows and doors are showing their age — but does that mean full replacement is the only answer? In Episode 13 of Stay Glassy, Newman Windows and Doors pros Maria and Duncan tackle the five most common window and door problems homeowners face, walking through practical fixes for each one. From fogged glass and drafty frames to sliding doors that require a full-body workout to open, replacement is sometimes the right call — but not always. This episode gives you the knowledge to know the difference.

Common Window and Door Problems — and the Fixes That Actually Work.

Key Takeaways from This Episode:

• Condensation on the inside of a single-pane window means the glass is essentially useless as a thermal barrier — the fix is new dual-pane windows
• Condensation between the panes of a dual-pane window means the hermetic seal has failed — older windows usually need full replacement; newer ones may only need the glass unit replaced
• New windows leaking after rain is most commonly caused by incorrect original installation flashing — a retrofit window will not fix a flashing problem
• Older sliding glass doors — especially those with the panel on the outside track — can be lifted off with a crowbar in seconds; tens of thousands are still in Southern California homes
• Windows that won't open can be painted shut, nailed shut, or have broken balancers or worn wheels — most have fixes, but new vinyl or fiberglass windows are often the smarter long-term investment
• Dual-pane windows with low-E coating block up to 86% of UV — stopping damage to flooring, furniture, upholstery, and artwork
• Fogged dual-pane windows from the 2000s onward may only need the glass unit (IG unit) replaced — not the full window — saving significant cost
• Old sliding glass door thresholds corrode from underneath due to aluminum reacting with concrete — new sliding doors are a game-changer in ease of use, safety, and security
• Never nail a window shut — in a fire, it becomes a sealed trap with no egress
• Full replacement is not always the answer — talk to a window and door specialist who can identify the right fix for your specific situation

Problem 1: My Window Won't Open

There are several common reasons a window stops opening. In older homes, repeated painting over the years can seal a window completely — the paint bond eventually becomes stronger than the window's ability to open. Some windows have been nailed shut by previous owners as a quick fix for a broken sash. Single-hung and double-hung windows can develop failed balancers — the mechanism that holds the sash open — causing it to fall shut immediately after being raised. Sliding windows can have worn, broken, or missing wheels, or deteriorated tracks. All of these have solutions. That said, for older single-pane or aluminum windows, the repair cost often approaches the cost of new vinyl or fiberglass windows that come with better energy efficiency, a lifetime warranty, and none of the underlying problems.

Problem 2: Drafty Windows and Faded Furniture

Single-pane aluminum windows are among the most thermally inefficient products in any home. Glass and aluminum are both excellent conductors of heat and cold, and as these windows age they loosen in their frames, allowing air to pass around the edges freely. The UV transmission through single-pane glass is essentially unfiltered — causing flooring, upholstery, curtains, and artwork to fade unevenly over time. Replacing with dual-pane vinyl or fiberglass windows with low-E coating blocks up to 86% of incoming UV, eliminates drafts, and delivers immediate, noticeable noise reduction. The improvement in comfort is something homeowners notice the day after installation.

Problem 3: Fogged Windows

Fogged dual-pane windows — condensation trapped between the two panes — mean the hermetic seal has failed. For windows that are 20, 30, or 40 years old with original early-technology dual-pane units, full window replacement is the right call. Spending money to re-glass an old aluminum-framed window is rarely worth it. For windows installed in the 2000s or later where the frame is still in good condition, the glass unit itself — called an IG unit — can be replaced without disturbing the frame. This is less expensive than full replacement and comes with a warranty. If you're replacing the IG unit anyway, it's also an opportunity to upgrade to low-E or low-E Max glass for added UV protection and energy efficiency.

Problem 4: Sliding Glass Door Is Difficult to Open

Old sliding glass doors deteriorate in multiple ways simultaneously. Aluminum thresholds react chemically with concrete over time, corroding from underneath until holes appear. Wheels wear down from decades of use, turning what should be a smooth glide into a full-body effort. Tracks accumulate damage that makes cleaning difficult and operation worse. The result is a door that requires significant physical effort to operate — a real problem for older homeowners or anyone with limited mobility. New sliding glass doors with modern wheels, clean tracks, and robust multi-directional locking systems are a dramatic improvement in daily usability, security, and appearance. They're also more reasonably priced than most homeowners expect.

Problem 5: Ugly or Outdated Entry Door

The front door is the entrance to your home — the first thing every visitor, buyer, and appraiser sees. An outdated door undermines the entire first impression of the property. Modern fiberglass and steel entry doors offer exceptional ROI, dramatically improved security through multi-point locking systems and long screws anchored into studs, and a range of design options from classic to contemporary. Wood doors are still available but require a minimum 6-foot overhang to protect them from sun damage — without that protection, deterioration is a matter of when, not if. Options like speakeasy panels, decorative glass, and custom caming mean your replacement door can be genuinely unique to your home.

Can fogged dual-pane windows be repaired without replacing the whole window? Sometimes. For windows installed from roughly 2000 onward with frames still in good condition, the glass unit — called an IG unit — can be replaced independently of the frame. This is less expensive than full replacement and comes with a warranty. For older windows with aluminum frames, full replacement is usually the better investment. A window specialist can assess which situation applies to your specific windows.

Why do new windows leak when it rains? The most common cause isn't the window itself — it's incorrect flashing from the original installation. Stucco is porous, and if the flashing under the tar paper wasn't layered correctly, rainwater that penetrates the stucco runs behind the paper and into the wall rather than down and out. A retrofit replacement window won't solve a flashing problem. If you're experiencing leaks, have the flashing assessed before any window work is done.

Are old sliding glass doors a security risk? Yes — particularly those installed in the 1960s and 1970s where the sliding panel sits on the outside track. A crowbar or screwdriver can lift that panel off its track entirely, bypassing the lock completely. Even if the panel isn't removable, older locking mechanisms are easy to defeat. Modern sliding glass doors have multi-directional locking systems secured with 3-inch screws anchored into the wall, and glass that is significantly thicker than older units.

Is it ever okay to nail a window shut? No. A nailed window is a sealed egress point. In a fire where a door is blocked, a window may be your only escape route — or the only route for a first responder to reach you. Nailing a window shut is a safety violation and a potential life-safety hazard. If a window doesn't function correctly, the right fix is repair or replacement — not permanent closure.