Window & Door Repair Guide: When to Fix vs. Replace

The Repair vs. Replace Dilemma

Every Bay Area homeowner faces this question eventually: "Should I fix this window or door, or is it time to replace it?" The answer isn't always obvious. A $200 repair today might delay a $3,000 replacement by a few years — or it might just be money down the drain if the frame is rotting underneath.

Over 25 years of installing and repairing windows and doors across the East Bay, Tri-Valley, and beyond, we've developed a clear framework for making this decision. Here's how to evaluate your situation.

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When Repair Makes Sense

Minor Hardware Issues

If your window or door is structurally sound but has a broken lock, crank handle, or hinge, a repair is almost always the right call. Replacement hardware is inexpensive, and a professional can typically install it in under an hour.

Isolated Glass Damage

A single cracked pane in an otherwise good window can be replaced without swapping the entire unit — as long as the frame and seals are intact. For double-pane units, you'll need to replace the insulated glass unit (IGU), which is more expensive than single-pane glass but still far cheaper than a full window replacement.

Weatherstripping and Seals

Drafts are usually a weatherstripping problem, not a window problem. Replacing worn weatherstripping is one of the most cost-effective repairs you can make. It costs a fraction of replacement and immediately improves comfort and energy efficiency.

Minor Frame Damage

Small areas of wood rot on a window frame can often be repaired with epoxy wood filler. If the damage is limited to a small section and the rest of the frame is solid, a repair can extend the window's life by several years.

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When Replacement Is the Better Choice

Failed Insulating Glass Seals

If you see condensation, fog, or a milky haze between the panes of your double-pane window, the insulating seal has failed. While you can replace just the IGU, consider the window's overall age. If your windows are 20+ years old and one seal has failed, others will follow. In this case, replacing the entire window with a modern, energy-efficient unit is usually the smarter long-term investment.

Widespread Frame Rot or Damage

When wood rot extends beyond a small spot, or when a vinyl or fiberglass frame is cracked, warped, or separating from the wall, repair becomes a losing battle. Structural frame damage compromises the window's security, weather resistance, and energy performance.

Drafts You Can't Fix

If you've replaced the weatherstripping and still feel significant drafts, the window or door may have warped or shifted out of plumb. This is especially common in older Bay Area homes where foundations settle. Replacement with proper installation addresses the root cause.

Windows Over 20 Years Old

Even well-maintained windows have a finite lifespan. If your windows are over 20 years old, they likely lack modern features like:

• Low-E glass coatings (which reflect heat, reducing energy costs by up to 25%)
• Argon or krypton gas fills between panes
• Multi-point locking systems for security
• Energy Star certification

The energy savings alone from modern windows can offset a significant portion of the replacement cost over time.

Safety Concerns

Windows that don't open easily are a fire egress hazard. Doors with compromised locks or frames are a security risk. If safety is at stake, replace immediately — don't repair.

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The Cost Comparison

Let's look at typical Bay Area costs (materials + professional installation):

Repair Costs

| Issue | Typical Cost | |------|-------------| | Weatherstripping replacement | $150 - $400 per window | | Broken lock or hardware | $100 - $300 per window | | Single IGU replacement | $300 - $700 per window | | Small wood rot repair | $200 - $500 per window | | Screen replacement | $50 - $150 per window |

Replacement Costs

| Window Type | Typical Cost (Installed) | |------------|------------------------| | Standard vinyl double-hung | $450 - $900 per window | | Premium fiberglass (Anlin/Milgard) | $700 - $1,400 per window | | Bay/bow window | $1,500 - $3,500 | | Entry door (fiberglass/steel) | $900 - $2,500 | | Sliding glass door | $1,200 - $3,000 |

The 50% Rule

A general rule of thumb: if the cost of repair exceeds 50% of the cost of replacement, replace. You'll get a new warranty, improved energy efficiency, and decades of additional life.

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Bay Area-Specific Factors

Energy Code Requirements

California's Title 24 energy standards are among the strictest in the country. If you're replacing windows, your new units must meet current code — which means better energy performance than what you're likely removing. This is a built-in upgrade.

Climate Considerations

In the Bay Area, our Mediterranean climate means:

• Coastal areas (Oakland, Berkeley): Salt air and fog accelerate corrosion — stainless or corrosion-resistant hardware is worth the investment
• Inland areas (San Ramon, Pleasanton, Livermore): Intense summer heat makes Low-E coatings and argon fills especially valuable
• All areas: UV exposure degrades finishes and seals faster than in cooler climates

Permits and Licensing

Window and door replacement in California requires a licensed contractor (C-17 for glazing, or a general B license). Tadek Construction is CSLB #903622 — licensed, bonded, and insured. Always verify your contractor's license at cslb.ca.gov.

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Making the Decision: A Quick Checklist

Repair if:

• The window/door is less than 15 years old
• The issue is isolated (hardware, weatherstripping, single pane)
• The frame is structurally sound
• Repair cost is under 50% of replacement cost
• The window meets current energy performance needs

Replace if:

• The window/door is 20+ years old
• Multiple windows have issues (one failed seal predicts more)
• The frame is rotting, cracked, or warped
• Energy bills are high and windows are drafty
• You're planning to sell (new windows boost home value and buyer confidence)
• Safety is compromised

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Need Help Deciding?

If you're on the fence, the best next step is a professional inspection. At Tadek Construction, we offer free, no-pressure window and door assessments throughout the Bay Area. We'll evaluate your windows, give you an honest assessment of whether repair or replacement makes sense, and provide transparent pricing for both options.

Schedule your free inspection today — or call us at (707) 287-1703.