Replacement window sashes offer homeowners an affordable way to upgrade their windows without the hassle and expense of full window replacement. They’re designed to fit into existing window openings, providing improved energy efficiency and functionality.
If you have noticed drafts, have difficulty operating your windows, or are dealing with increasing energy bills, replacement sashes might be the solution you’re looking for. In this guide, we’ll explore when to use replacement window replacement sashes, their benefits, and alternative options to help you make an informed decision about your home’s windows.
What Are Replacement Window Sashes?
A window sash is the fitted part of the window that holds the glass within the window frame. Replacement window sashes are prefabricated units designed to fit into existing window frames. They typically consist of double-hung sash units enclosed in thin frames. They’re installed by removing the old sash and balance ropes and then fitting the new sash into the window.
Replacement sashes offer several advantages for homeowners, including improved energy efficiency, home comfort, and window operation. They can help preserve the original window trim and siding while serving as a cost-effective alternative to full window replacement.
Types of Replacement Window Sashes
When considering replacement sashes, you’ll encounter several types designed for different window styles and preferences, including the following:
- Double-hung sash units: These are the most common type and are ideal for traditional home styles. They feature two operable sashes that move up and down independently, which adds versatility to the window and makes them easier to clean.
- Single-hung sash units: These units have a fixed upper sash and a movable lower sash. They offer less ventilation flexibility than double-hung units, but they can be a good choice for smaller windows or areas where upper-level access isn’t necessary.
- Sliding sash units: Sliding sashes move horizontally rather than vertically. These are often used in modern home designs or in situations where vertical operation might be impractical. They offer excellent ventilation and are easy to operate.
When To Use Replacement Window Sashes
Window issues don’t mean you automatically have to replace the whole window. You might be able to opt for a replacement window sash instead, saving you some big bucks. Before making a decision, understand the signs of an issue with the window sash, when it’s time to replace the whole window, and alternative options to full sash replacement.
Common Window Sash Issues
Here are some signs it’s time to replace the sash:
- Energy efficiency issues: If you notice a draft around your window or there has been a spike in your energy bills, it could point to an issue with your sash.
- Operational problems: If you’ve had difficulty closing or opening your window, the sash may be warped, swollen, damaged, or misaligned.
- Rattling sash: Loose or rattling sashes point to a poorly secured fit.
- Visible damage and deterioration: Sashes with cracks, rot, mold, warping, or other physical damage, especially in wood sashes, need to be replaced.
- Water leaks: If water leaks in through the window during rain, it could mean the sash or weatherstripping is no longer sealing properly.
Factors To Consider Before Replacing Window Sashes
In many cases, choosing replacement window sashes will be more cost-effective than doing a whole window replacement. However, some issues and factors could make whole window replacement the better option.
Condition of Your Windows
To determine the condition of your windows, first consider their age. Older windows weren’t always designed with energy efficiency in mind. If your windows are more than 15 years old, a replacement window may be the best choice for the long run. Look for Energy Star-certified options for the most benefits and potential tax savings.
Next, look at the condition of the frame and overall window. If the window frame is still in good structural condition, replacing the sash is a good choice. Damaged frames could require a full window replacement in order to address the underlying issues.
You should replace the entire window if the window itself is failing. This Old House general contractor Tom Silva says, “If the sash is coming apart and all the glazing is falling out, it’s going to cost a lot of money to fix.” Significant air or water leaks could point to a compromised frame and indicate a full window replacement is needed to prevent further damage.
Scope of Required Repairs and Cost
Evaluate the full scope of repairs needed to fix the window. If multiple problems exist or repairs would be extensive, paying for a full window replacement is likely the more cost-effective route. You might be able to just replace the sash, add weatherstripping, or install a storm window for minor issues.
Home Design
If you’re renovating your home, your old windows may no longer fit your decor choices. You may also want to opt for modern amenities, such as between-the-glass blinds or security features. In these cases, you’ll need to fully replace the window. If you’re not performing a major home renovation, installing a new sash is the more cost-effective option.
Presence of Lead Paint
Lead paint is a concern in homes built before 1978. Old sashes can shed tiny particles of lead every time the window is operated. You can use an EPA-approved lead test kit or hire a certified lead inspector to test your windows and home.
If you suspect your windows contain lead paint, work with a professional to safely remove and dispose of the window. A full window replacement is likely needed.
Alternative Options to Full Sash Replacement
Sometimes a new window sash isn’t needed. Alternatives to full sash replacement include the following:
- Install storm windows: Storm windows can provide an additional layer of insulation and protection for your existing windows. They’re particularly useful for historic homes if you’d prefer to preserve original windows.
- Repair broken balance ropes: For older windows with weight-and-pulley systems, repairing broken balance ropes can restore functionality. Broken balance ropes can be fixed, which takes care of one common annoyance—a falling sash. “For a lot less money than buying replacements, you can get them in good condition,” says Silva.
- Replace weatherstripping: For windows that are structurally sound but leaky, adding or replacing weatherstripping can significantly reduce drafts and improve energy efficiency.
How To Replace Window Sashes
Understanding the replacement process can help you prepare for the project and decide whether to tackle it yourself or hire a professional.
Start by thoroughly examining your existing windows. Look for signs of damage, measure the openings, and determine the type of windows you currently have.
Then, choose replacement sashes that match your window style and meet your energy efficiency goals. Consider factors such as material (vinyl, wood, or composite) and color to make sure the new sashes complement your home’s decor.
DIY vs. Professional
If you’re not sure if you need a whole window replacement or if you could benefit from just adding a new sash, talk to a professional about the best route forward. Good contractors can give you advice based on your window’s condition, your goals, and your budget.
If you know you just need to replace the window sash, you might want to tackle it as a DIY project. Installing a new sash requires patience and a steady hand, but it’s easier if you opt for a window sash replacement kit.
If you suspect your home has lead paint, hire a professional.
Maintaining Your New Replacement Sashes
Proper maintenance and care of your new replacement sashes will extend their lifespan and provide better performance. Perform the following maintenance tasks:
- Clean the sash using mild soap and water regularly, avoiding abrasive cleaners that could damage the finish or glass.
- Check weatherstripping and seals periodically, replacing them as needed to maintain energy efficiency.
- Lubricate moving parts once a year using silicone spray to improve window operation.
- Schedule professional maintenance and inspections to identify potential issues before they become major problems.
Our Conclusion
Replacement window sashes offer a practical and cost-effective solution for homeowners looking to improve their windows’ performance and efficiency. They’re a good choice when the existing window frames are in good condition but the sashes themselves are failing or inefficient. Before making a decision, carefully assess your windows’ condition and consider factors such as energy savings, cost, and long-term maintenance.