Wood Window Repair: A Comprehensive Guide to Restoring the Beauty and Function of Your Home

Homeowners hold on to wood windows for a reason — they bring warmth, history, and craftsmanship you won’t find in modern frames. But even the best wood shows its age over time.

At Apex Window Werks, we understand the importance of preserving your home’s original character. Our team specializes in restoring old wood windows to their former glory through our expert wood window repair services. In this post, we’ll explore the process of reviving your wooden windows and the benefits of choosing restoration over replacement.

Signs Your Wood Windows Require Repair

Before diving into the repair process, you’ll want to understand the signs that your wood windows need attention.

Here are some common indicators:

• Sticking or drafty windows: This can be caused by warped sashes, worn-out weather stripping, or damaged glazing putty.
• Cracked or rotting wood: This is a more serious issue that can compromise the structural integrity of the window and lead to energy inefficiency.
• Difficulty opening or closing windows: This can be due to a buildup of paint, grime, or damaged sash cords.
• Condensation between window panes: This indicates a failing seal, allowing moisture to enter the airspace between double-paned windows.
• Visible gaps around the window frame: This can be a sign of rot or deterioration in the window frame itself.

The Wood Window Repair Process: A Step-by-Step Guide

If you’ve decided to tackle DIY window restoration, know that the process is possible. We’ve put together a step-by-step guide to help you navigate the process.

Step 0. Preparation for Your Window Repair: Safety and Tools

Old wood windows can carry hidden risks like lead paint and fine dust. A few smart precautions now can save you from bigger problems later.

• Lead paint warning: Many older homes have windows painted with lead paint. Lead exposure can be hazardous, so it’s essential to test your windows for lead paint before you start any repairs. If lead paint is present, we recommend hiring a professional contractor certified in lead-safe work practices.
• Wear protective gear: Always wear safety glasses, gloves, and a dust mask when working on wood windows, especially when sanding or scraping paint.

The next step for you is making sure every tool and material is ready before the real work begins. Here’s a quick breakdown of what you’ll need at each stage.

Now that prep is complete, you can confidently start the repair.

Step 1. Assess the Damage

Carefully examine each window to determine the scope of repairs needed.

Take note of the following:

• Any damaged or rotted wood
• Condition of the glazing putty
• The presence of broken or cracked glass
• Condition of the hardware and sash cords

Step 2. Remove the Window Sash

Most wood window repairs are easier to perform with the window sash removed.

Here’s how to remove a typical double-hung window sash:

• Carefully pry off the interior trim on both sides of the window.
• If the sash is painted shut, use a putty knife or utility knife to score the paint seam where the sash meets the frame.
• Lower the upper sash and carefully lift it out of the window frame.
• Release the sash cords from the sash and set the sash aside on a drop cloth.
• Repeat for the lower sash.

Step 3. Remove the Existing Glazing Putty

• Score around the glazing putty with a putty knife to break the seal to make removal easier.
• Carefully soften the old putty with a heat gun or with a small amount of chemical paint stripper applied directly to the putty.

Caution: If you’re using a heat gun, keep it moving to avoid scorching the wood, and be aware of the risk of shattering the glass.

• Once the putty has softened, gently pry it away from the window frame with a putty knife, being careful not to crack the glass.

Step 4. Repair Damaged Wood

• Minor rot: Scrape away any loose wood, and lightly sand the edges of the affected area. Apply a layer of linseed oil to help strengthen the fibers, then fill the damaged area with a high-quality wood filler.
• Extensive rot: Use a sharp chisel or wood carving tool to remove all rotten wood (extend the removal area slightly into healthy wood for a stronger repair). After cleaning and sanding, apply linseed oil and rebuild the area with a two-part epoxy wood filler. Shape the epoxy carefully to match the original profile of the wood frame. If you often run into the problem of rotting window frames, check out our guide for repairing rotten frames.

Step 5. Reglaze or Replace the Glass

Depending on the condition of your window, you may need to either reglaze existing panes or replace broken ones. Reglazing involves applying fresh putty and securing the pane with glazing points. If a pane is cracked or missing, remove it and carefully fit a replacement. Always wear gloves and eye protection when handling old glass.

Step 6. Reassemble and Adjust the Window

Once the glazing has set, reassemble the window. Replace any sash cords, hardware, or stops as needed. Test the movement of sashes and ensure everything opens and closes smoothly. This step ensures full functionality before moving on to finishing touches.

Step 7. Prime and Paint for Long-Term Protection

Sand any remaining rough patches, then apply an oil-based primer suitable for exterior wood. Once dry, follow with two coats of high-quality paint or stain designed for windows. This step protects the wood from future moisture damage and gives your window a cohesive, refreshed look.

Step 8. Seal Gaps

After completing repairs and restoring the finish of your wood windows, the final step is to seal any remaining gaps around the window frame. This is an important step to prevent drafts, improve energy efficiency, and enhance your home’s overall comfort.

Additional Tips for DIY Wood Window Restoration

• Work on one window at a time: This keeps the project manageable and less overwhelming.
• Test paint removal techniques: Experiment with different paint removal methods (heat gun, chemical strippers) on a less noticeable area to see which method yields the best paint removal results for your specific windows. Stripping paint can be a time-consuming process.
• Restore original hardware: Clean and polish the original hardware whenever possible. If original hardware is missing or severely damaged, consider sourcing hardware appropriate to the age and style of your home.

Tips for Maintaining Your Restored Wood Windows

Investing in the restoration of your windows is a wonderful way to preserve the charm of your home. With a bit of routine care, you’ll ensure they continue to look beautiful and function well for years to come.

Here are some simple ways to protect your restored windows:

• Regular cleaning: Keeping your windows clean is a key. A mild soap solution or a glass cleaner formulated for historic or restored windows is perfect for the job. Just remember, gentle is best — always avoid harsh chemicals or anything abrasive.
• Annual checkup: Set aside time once a year to give your windows a thorough inspection. Look closely for any signs of wear or damage, such as chipped paint, minor cracks, or indications of wood decay. Catching issues early saves you from bigger headaches (and expenses) later on.
• Weather protection: If it fits your home’s style and budget, consider storm windows. They shield your restored windows from the elements and even boost energy efficiency.
• Prevent moisture woes: Good ventilation in your home keeps excess moisture at bay. This is crucial, as moisture buildup can damage wood and paint.
• Handle with care: Your restored windows deserve a bit of extra TLC. Open and close them gently to protect the sashes, hardware, and the frame itself.

The Average Cost of Wood Window Repair

The cost of wood window repair can vary widely depending on the extent of the damage, the size and complexity of the windows, and regional labor rates. However, it’s generally more cost-effective than replacing the entire window. In states like Illinois, Ohio, Minnesota, and Wisconsin, you can expect the following average price ranges for different types of wood window repairs:

It’s important to note that these are just average ranges, and the actual cost of your project may be higher or lower. For a more accurate estimate, contact Apex Window Werks to schedule a consultation. We’ll assess your specific windows and provide you with a personalized quote.

Why Choose Wood Window Restoration?

When you’re deciding to repair or replace old windows, many homeowners opt for replacement windows due to their perceived convenience and energy efficiency.

However, there are several compelling reasons to choose wood window restoration instead:

• Preserving historic charm: If you own an old house with original windows, restoring them allows you to maintain the historic integrity and architectural style of your home. New windows often lack the character and craftsmanship found in historic wood windows.
• Cost-effective solution: Restoring your existing windows is often more cost-effective than replacing them entirely. With proper maintenance and repair, your restored windows can last for decades and provide long-term value.
• Environmental sustainability: By repairing and reusing your existing windows, you reduce the demand for new materials and minimize waste in landfills. Wood window restoration is an eco-friendly choice that conserves resources.
• Improved energy efficiency: Contrary to popular belief, properly restored and weatherized wood windows can be just as energy-efficient as modern replacement windows. By addressing drafts, adding weather stripping, and installing storm windows, you can significantly improve the thermal performance of your windows.

When to Consider Wood Window Replacement

While repairing wood windows is often the most cost-effective and aesthetically pleasing option, there are situations where window replacement might be necessary.

Here are some indicators that replacement is the better course of action:

• Extensive wood rot that affects more than 20% of the window frame or sash.
• Cracked or broken glass panes that cannot be repaired safely.
• Windows that are drafty and cannot be effectively sealed, leading to significant energy loss.
• The historical significance of the windows is minimal, and the cost of repair outweighs the benefits.

Our Wood Window Repair Process

At Apex Window Werks, our skilled craftsmen follow a meticulous process to restore your wood windows to their original beauty and functionality.

Here’s an overview of the steps involved:

• Carefully remove old paint and deteriorated wood: We often use steam-assisted tools to preserve historic details and avoid unnecessary damage.
• Address any rot and replace damaged sections: Repairs are made using epoxy or matching wood for a seamless blend.
• Reglaze the windowpanes and reassemble components: This includes reinstalling hardware, sash cords, and stops for full functionality.
• Sand, prime, and repaint the surface: We use weather-resistant finishes that reflect the window’s original look and protect it for years to come.
• Add weather stripping and sealants for better insulation: This step boosts energy efficiency while keeping the charm of the original windows intact.

Don’t Let Age or Damage Erase the Character of Your Home — Call Apex Window Werks!

When original wood windows start to wear down, full replacement isn’t your only option. With over 15 years of experience and nearly 15,000 projects completed, Apex Window Werks restores their beauty and function, without losing what makes them special.

Get a free estimate today to keep your windows working and worth keeping.