Andersen Narroline Window Sash Replacement

Andersen Narroline windows are a popular choice for homeowners due to their classic design and durability. However, like all windows, the sash, which holds the glass, can eventually require replacement due to damage, wear and tear, or seal failure leading to condensation between the panes. Understanding the process of Andersen Narroline window sash replacement is crucial for maintaining the performance and aesthetic of your windows.
Identifying the Need for Sash Replacement
Several indicators suggest that your Andersen Narroline window sash needs replacement. These include:
- Visible Damage: Cracks, rot, or warping in the wood sash are clear signs of damage requiring attention.
- Seal Failure: Condensation or fogging between the glass panes indicates a broken seal, compromising insulation and visibility.
- Difficulty Operating: Sticking, binding, or difficulty opening and closing the window may stem from a damaged or warped sash.
- Drafts: Noticeable drafts around the window frame can point to a compromised sash that no longer provides a tight seal.
- Increased Energy Bills: Inefficient windows due to damaged sashes can lead to higher heating and cooling costs.
Assessing the Damage
Before proceeding with replacement, a thorough assessment of the damage is necessary. Inspect the sash for the extent of rot, warping, or cracks. Check the condition of the glazing putty and the seals around the glass. Determine if the damage is isolated to the sash or if the window frame is also affected. If the frame is damaged, a complete window replacement might be a more suitable solution.
Must Read
Sash Replacement Options
There are two primary options for replacing an Andersen Narroline window sash:
- Complete Sash Replacement: This involves replacing the entire sash unit, including the glass and surrounding wood frame.
- Glass-Only Replacement (Re-glazing): If the wood sash is in good condition and only the glass is damaged or the seal has failed, replacing just the glass may be a viable option.
The best option depends on the extent of the damage and the condition of the existing sash. Complete sash replacement is generally recommended for significant damage to the wood, while glass-only replacement is suitable for isolated glass issues.

Ordering a Replacement Sash
To order a replacement sash for your Andersen Narroline window, you will need specific information about your window. This information is typically found on a sticker or etched into the window frame. Key details include:
- Window Series: (Narroline)
- Window Size: (Height and Width)
- Manufacturing Date: This helps ensure you receive the correct replacement part compatible with your window's vintage.
- Operator Type: (e.g., Double-Hung, Gliding)
- Handing: For gliding windows, specify left-hand or right-hand operation.
You can order replacement sashes directly from Andersen Windows or through authorized dealers. Provide the necessary window information to ensure you receive the correct replacement part. Consider ordering pre-finished sashes to save time and effort on painting or staining. If possible, provide a photo of the window and any identifying marks to further ensure accuracy.
Measuring the Sash
If the label is missing or illegible, accurately measuring the sash is critical. Measure the width and height of the sash from the outside edges. Note the thickness of the sash. It is crucial to be precise to ensure a proper fit. If unsure, consult with a professional for assistance.

The Sash Replacement Process
Replacing an Andersen Narroline window sash is a moderately complex task that requires some DIY experience. If you are not comfortable with home repairs, it is best to hire a qualified professional. The following steps outline the general process:
- Preparation: Gather necessary tools and materials, including a putty knife, screwdriver, safety glasses, gloves, paint scraper, and the replacement sash. Protect the work area with drop cloths.
- Removing the Old Sash: Carefully remove the interior stops or retaining clips that hold the sash in place. Depending on the window model, this may involve removing screws or gently prying the stops loose.
- Disconnecting Hardware: Detach any hardware, such as locks, latches, or balances, from the old sash. Save these components if they are in good condition and can be reused on the new sash.
- Installing the New Sash: Carefully insert the new sash into the window frame. Ensure it is properly aligned and fits snugly.
- Reattaching Hardware: Reattach the hardware to the new sash. Ensure all components are functioning correctly.
- Securing the Sash: Reinstall the interior stops or retaining clips to secure the new sash in place.
- Sealing and Finishing: Apply caulk around the perimeter of the sash to create a weather-tight seal. If the sash is unfinished, paint or stain it to match the existing window trim.
Specific Considerations for Different Window Types
The replacement process can vary slightly depending on the type of Andersen Narroline window. For double-hung windows, pay attention to the balance system. Ensure the balances are correctly connected to the new sash to ensure smooth operation. For gliding windows, ensure the sash is properly aligned on the track and glides smoothly. Refer to Andersen's installation guides for specific instructions for your window type.

Hiring a Professional
While DIY sash replacement is possible, hiring a professional offers several advantages:
- Expertise: Professionals have the experience and knowledge to properly assess the damage and install the replacement sash correctly.
- Proper Tools: Professionals have the specialized tools required for sash replacement, ensuring a clean and efficient installation.
- Warranty: Many professionals offer warranties on their work, providing peace of mind.
- Time Savings: Hiring a professional saves you time and effort, allowing you to focus on other tasks.
When choosing a professional, obtain multiple quotes and check references. Ensure the contractor is licensed and insured. Discuss the scope of the work and the materials to be used. A written contract outlining the details of the project is essential.
"Proper installation is crucial for ensuring the longevity and performance of your replacement sash. A professional installer can guarantee a weather-tight seal and smooth operation."
Maintaining Your Andersen Narroline Windows
Regular maintenance can help extend the life of your Andersen Narroline windows and prevent the need for frequent sash replacements. Key maintenance tasks include:

- Cleaning: Regularly clean the window glass and frames to remove dirt and debris.
- Inspecting: Periodically inspect the sashes and frames for signs of damage, such as cracks or rot.
- Caulking: Check the caulking around the windows and reapply as needed to maintain a weather-tight seal.
- Lubricating: Lubricate moving parts, such as hinges and latches, to ensure smooth operation.
- Painting/Staining: Maintain the paint or stain on the wood sashes to protect them from moisture damage.
By following these maintenance tips, you can help keep your Andersen Narroline windows in good condition for years to come.
Cost Considerations
The cost of Andersen Narroline window sash replacement varies depending on several factors, including the size and type of window, the material of the sash, and whether you hire a professional. Expect to pay more for larger windows or sashes made of premium materials. Professional installation will add to the overall cost. Obtain multiple quotes to compare prices and ensure you are getting a fair deal. Also, factor in the long-term savings on energy bills that can result from a properly sealed and functioning window.
Key Takeaways
Replacing an Andersen Narroline window sash is a viable option for addressing damage or seal failure, restoring the functionality and appearance of your windows. Identifying the need for replacement early, accurately ordering the correct sash, and either performing the replacement correctly yourself or hiring a qualified professional are essential for a successful outcome. Regular maintenance can significantly extend the lifespan of your windows and minimize the need for future repairs. Prioritizing these actions will ensure the continued performance and value of your Andersen Narroline windows.
