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How to Repair a Leaking Window

How to Repair a Leaking Window – Expert Guide by Caffey Construction

February 23, 20256 min read

If you see water leaking around your window frame, it's time to take action. A leaking window can cause structural damage, mold growth, and higher energy bills if left untreated. Fixing it quickly helps protect your home and prevents further water damage.

The best way to repair a leaking window is to first identify where the leak is coming from. If the leak is due to gaps or cracks, sealing it with caulk or weather stripping can stop water from getting inside. If the window seal is broken, you may need window resealing or even a replacement to fix the issue properly. In some cases, window flashing repair is needed to redirect water away from the window frame.

If you're unsure how to fix the leak, Caffey Construction in Amarillo, TX, can help with professional window leak repair services to ensure your home stays dry and energy-efficient.

Common Causes of Window Leaks

Windows can leak for many reasons, and finding out why yours is leaking is the first step to fixing it. Below are some of the most common causes of window leaks:

1. Poor Window Installation

If a window was not installed properly, gaps may form around the window frame, allowing water leaks when it rains. Over time, this can lead to moisture buildup, mold growth, and even rotting wood around the window.

2. Worn-Out Caulk and Sealant

Caulk is used to seal gaps around the window, but it doesn't last forever. If the caulking around your window has cracks or gaps, water can easily seep through and cause water stains or damage to your home.

3. Broken or Failing Window Seals

A broken window seal can allow air and moisture to enter between the glass panes, causing fogging or condensation. Over time, this can lead to a window leak that damages your walls or wooden frame.

4. Clogged Drainage Channels

Windows are designed with drainage channels to guide water away. If these channels get clogged with dirt or debris, water can pool around the window and leak inside instead of draining properly.

5. Cracks in the Window Frame or Glass Panes

A cracked window frame or glass pane can let water inside. If the window frame is made of wood, prolonged water exposure can cause wood rot, weakening the structure and making the leak worse.

A handyman using a caulking gun to apply

How to Identify a Leaking Window

Sometimes, a window leak isn’t immediately noticeable. Look for these signs to check if your window is leaking:

  • Water stains on walls or ceilings near the window – This is a sign that water is seeping inside

  • Mold or mildew growth around the window frame – Moisture buildup can cause mold to grow, affecting indoor air quality.

  • Peeling paint or wallpaper near the window – Water leaks can cause the paint or wallpaper to bubble and peel.

  • Condensation inside the window panes – This often means the window seal is broken, allowing moisture between the glass panes.

  • Soft or rotting wood on the window frame – If the wood feels soft when pressed, it may be damaged by moisture.


Temporary Fixes for a Leaking Window

If you need a quick solution to stop a leaking window, here are some temporary fixes until you can make permanent repairs:

  • Apply caulking – Use exterior-grade silicone caulk to seal any gaps or cracks around the window frame.

  • Use weather stripping – Adding weather stripping to casement windows can help block drafts and leaks.

  • Place plastic sheeting over the window – This can help keep out water and air leaks until a proper fix is made.

  • Clear clogged drainage channels – Remove any dirt, leaves, or debris blocking the window drainage system.

These temporary solutions can reduce leaks for a short time, but permanent repairs are necessary to protect your home.


How to Repair a Leaking Window Frame

If your window frame is leaking from the top, follow these steps to repair the leak properly:

  1. Remove old caulk or sealant – Use a scraper to get rid of cracked or damaged caulk.

  2. Clean and dry the window frame – Wipe away moisture, dirt, and debris before applying a new seal.

  3. Apply fresh caulk – Use high-quality exterior caulk to seal the gaps and cracks.

  4. Install new weather stripping – This helps keep out rain, drafts, and moisture.

  5. Inspect and repair flashing – If needed, install new window flashing to guide water away.


How to Fix a Leaking Window When It Rains

If water leaks from your window during heavy rain, follow these preventative steps:

  • Check your gutters and drainageBlocked gutters can cause water to overflow and leak through windows.

  • Reapply window flashing – Flashing helps redirect water away from the window frame.

  • Seal any exterior cracks – Check the house siding and roof for cracks that allow water to enter.

A person inspecting a window for leaks

How to Insulate Leaky Windows for Energy Efficiency

A leaking window can cause higher energy bills by letting cold air in during winter and warm air in during summer. Here’s how to improve insulation:

  • Install weather stripping to block drafts.

  • Use window film to add an extra layer of insulation.

  • Replace old windows with energy-efficient glass panes.

By making these upgrades, you can save money on energy costs while keeping your home comfortable.


Professional Window Leak Repair – When to Call an Expert

If your window continues to leak after DIY repairs, it’s time to call a professional. At Caffey Construction, we provide expert window repair services in Amarillo, TX. Our team can:

  • Fix broken window seals, leaks, and damaged frames.

  • Replace worn-out caulking and weather stripping.

  • Prevent future window leaks with quality repairs.


Preventative Maintenance to Avoid Future Window Leaks

To keep your windows in great shape, follow these maintenance tips:

  • Inspect and reseal caulking every year.

  • Keep window drainage channels clean to prevent clogs.

  • Check for cracks in window frames or siding and repair them early.


Why Choose Caffey Construction for Window Repairs in Amarillo, TX?

At Caffey Construction, we specialize in window leak repair, caulking replacement, and frame restoration. We understand the challenges of Texas weather and provide long-lasting solutions to protect your home.

🔧 Need help repairing your leaking window? Call Caffey Construction today for professional window repair services in Amarillo, TX! 🚪💧

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