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Panther Creek Dry-Out ProsWater Damage Help · Frisco, TX

Winterizing Your Home to Prevent Leaking Windows

Last updated October 25, 2026

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The short answer

Why Windows Leak in Winter

Windows leak when water finds a way past the seal between the glass, frame, and wall. Cold weather can make gaps worse as materials contract. Rain driven by wind pushes water into tiny cracks that look harmless on a dry day.

Your home's humid subtropical climate brings sudden rain and hail storms. A small leak can soak drywall, wood, and insulation before you notice. Catching it early is the key to avoiding bigger repairs.

  • Inspect caulk and sealant around every window frame
  • Check for cracked or missing weatherstripping
  • Clear debris from window wells and weep holes
  • Look for water stains or soft spots on the sill
  • Trim back branches that could rub against glass
  • Confirm the sill slopes outward so water runs off

Seal Gaps Before the Rain

Start with a close look at the outside of each window. Remove old, cracked caulk and replace it with a fresh bead of exterior-grade sealant. Use a caulk remover and a putty knife to get a clean surface before applying the new layer.

Inside, check the weatherstripping on the moving parts of your windows. If it feels brittle or falls out, replace it with a new strip that matches the width of the gap. This helps stop cold drafts and keeps rain from being pulled in by air pressure.

Clear Drainage Paths

Windows have small weep holes at the bottom edge of the frame that let water escape. If these get blocked with dirt or paint, water backs up and finds its way inside. Use a thin wire or a can of compressed air to clear them gently.

Also check the ground outside each window. Soil should slope away from the foundation so rain does not pool against the wall. If you have window wells, clear out leaves and mulch that can trap moisture against the glass.

Handle Existing Leaks

If you already see water marks, peeling paint, or feel dampness around a window, you need to find the source. It may be a failing seal, a cracked pane, or a problem higher up like a roof or gutter issue. Dry the area with towels and a fan to prevent mold from taking hold.

For a persistent leak, a water damage inspection can pinpoint where water enters and how far it has spread. Local water damage pros use moisture meters and thermal imaging to see behind walls without tearing everything open. This helps you decide the right fix.

  • Dry wet surfaces with towels and a fan
  • Remove any wet carpet or padding
  • Move furniture away from the damp area
  • Run a dehumidifier to lower moisture
  • Watch for musty odors or dark spots
  • Check the attic and roof for roof leaks

When to Call the Pros

If you cannot find the leak source or if water damage has spread to the wall or floor, it is time to get help. A window replacement may be needed if the frame is rotted or the glass is cracked. Otherwise, a pro can reseal and make small repairs that stop the leak.

Act quickly. Water that sits in walls or under floors can lead to mold and structural issues. The pros can dry out cavities and restore your home to a safe condition. If you plan to file an insurance claim, check your policy for coverage details. Policies vary, and your insurer decides what is covered. Document the damage with photos and notes.

Talk to someone now

Phones are answered 24/7 for Frisco and nearby communities.

Call Now (469) 535-6935

Frequently asked questions

Can I winterize my windows myself?

Yes, you can handle simple tasks like replacing weatherstripping, clearing weep holes, and applying fresh caulk. For leaks that keep coming back or damage that spreads, you may need a professional to find the true source and dry out the affected areas.

How do I know if my window is leaking?

Look for water stains on the sill, peeling paint, or damp spots on the wall below the window. Feel for cold drafts on a windy day. If you see mold or soft wood, the leak has been active for a while and needs attention soon.

What should I do if a window leaks during a storm?

Place towels or a bucket under the leak to catch water, then dry the area with a fan. Move furniture away and remove wet rugs. Once the storm passes, inspect the seal and weep holes. If the leak persists, call local water damage pros for a thorough drying and repair.

Call Now (469) 535-6935