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How replacement windows are installed


Many homeowners are surprised to learn that proper installation is just as important as the window product itself. Even the highest quality window can experience leaks, drafts, or efficiency problems if it is not installed correctly. Garvin Exteriors follows a detailed installation process to ensure your new windows perform exactly as intended.


Step 1: Protecting the Home

Before installation begins, our team carefully protects:

  • Flooring

  • Furniture

  • Landscaping

  • Interior spaces

We prepare the work area to minimize dust and disruption throughout the installation process.


Step 2: Removing the Existing Window

The old window and surrounding materials are carefully removed while inspecting for:

  • Rotten wood

  • Water intrusion

  • Structural damage

  • Improper flashing

  • Existing installation failures

This is a critical stage because hidden damage is common around older windows.


Step 3: Preparing the Opening

Once the opening is exposed, we:

  • Clean the opening thoroughly

  • Verify measurements

  • Ensure the frame is level and square

  • Install proper flashing and waterproofing materials

Proper preparation helps prevent future air and water infiltration.


rough window opening

Step 4: Installing the New Window

The new replacement window is then:

  • Set into place

  • Leveled and shimmed correctly

  • Fastened securely

  • Checked for proper operation

Careful alignment is extremely important for smooth operation and long term durability.


window installer insulating a window

Step 5: Sealing and Insulating

After installation:

  • Gaps are insulated

  • Perimeter sealing is completed

  • Exterior caulking is applied

  • Weatherproofing is finalized

This stage plays a major role in energy efficiency and leak prevention.



Step 6: Final Cleanup and Inspection

Before we leave, we:

  • Test window operation

  • Inspect locking systems

  • Clean the glass

  • Remove debris

  • Perform a final quality inspection

Our goal is to leave your home cleaner and better protected than when we arrived.


Why Proper Installation Matters

Incorrect window installation can lead to:

  • Water intrusion

  • Drafts

  • Seal failures

  • Higher energy bills

  • Premature window damage


That is why professional installation matters just as much as the window brand itself. According to Pella, proper installation is critical for maximizing energy efficiency, comfort, and long term performance.

 
 
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