
As a homeowner, do you know when to replace windows? Understanding the answer to this question can cause confusion and frustration. Why? Every window is unique. Windows do not age at the same rate. Some experience accelerated deterioration. Others may last longer due to more favorable conditions or routine maintenance. Ultimately, you should receive an expert opinion from a qualified professional like Moss Roofing to determine the appropriate time to remove and replace existing windows with new ones.
When To Replace Windows: How Old Is Too Old?
Historically, residential windows were designed to offer 15 to 20 years of service life before requiring replacement. However, many homeowners would attempt to push their usage to as much as 30 years, even if the windows became drafty or leaky. New windows provide added features to deliver a much longer lifespan. Some fiberglass models are known to last up to 50 years or more.
If you, as a homeowner, have questions about when to replace existing windows, consult a knowledgeable and experienced window specialist. Avoid choosing a generalist. Ask the following questions when considering which professional to select for your window replacement:
- Are you licensed as a contractor to install new or replacement windows?
- How many years of experience do you have replacing windows?
- What kind of training or certification do your window installers possess?
- What types or brands of windows do you most frequently install?
- How long can I expect new windows to last, depending on the brand?
- What warranties do you offer when installing new windows?
- What is the estimated timeframe for replacing existing windows?
- Are there any additional costs or fees associated with installing windows?
- Can you provide a detailed breakdown of your pricing in a written estimate?
- Are there any financing options available for homeowners like me?
When Do Windows Need To Be Replaced: Telltale Signs
Many homeowners delay a crucial window replacement because they don’t know how to recognize when new windows are necessary. The age of windows is not the only indication that they may require replacement. Consider the following reasons to install new windows:
Air Leaks/Draftiness
Stand next to a window. Can you feel airflow around the edges? A failing window will allow air to seep through tiny gaps or broken seals. Consequently, the leaky window is now a source of energy inefficiency, causing added heating and cooling expenses.

Excess Condensation
Some window condensation will occur from time to time, especially during cooler months. However, if your windows consistently experience water droplets forming and remaining on the glass surface or between panes, your windows might not be performing optimally or efficiently.
Poor Soundproofing
Older windows are often manufactured with single-pane or thinner glass and minimal or no insulation. A modern double or triple-pane window provides an air gap to dampen sound waves. Additionally, old windows may have poor or deteriorating seals, allowing noise penetration.
Visible Deterioration
Windows degrade over time. Notably, frames are frequently produced from wood, which rots, warps, or decays due to exposure to weather elements such as wind, sun, and moisture (rain and snow). However, glass and seals can also feel the adverse impact of outside conditions.

Do New Windows Generate Energy Savings?
Today, ENERGY STAR-certified windows can reduce heating and cooling consumption, resulting in energy savings. Modern advances in window technology, including double and triple-pane windows, low-emissivity (Low-E) coatings, and gas-filled spaces between windows, reduce heat transfer and improve insulation. Most homeowners will achieve monthly savings of between 5% and 20% by replacing old, drafty windows with new, energy-efficient ones.
How Do New Windows Affect Home Value?
Are you planning to sell your home in the next three to five years? If so, new windows could be a worthwhile investment. When selling in a few years, most homeowners recuperate 60-80% of the value. If you intend to list your home in a more immediate timeframe, old windows can reduce a prospective buyer’s offer. Additionally, problematic windows may necessitate replacement before closing.
Instead of incurring an unpleasant surprise that could delay or prevent your home from selling on your timetable or at your list price, you should replace old, leaky, or drafty windows with new ones. You’ll have peace of mind knowing that your home looks presentable. Potential buyers will notice the new appearance of your windows and, in many cases, might make a better offer.
When Should I Replace My Windows? Find Out More.
At Moss Roofing, we assist Indianapolis homeowners with identifying whether to replace existing windows. Our experts understand the indicators that reveal a home needs new windows. However, we provide a detailed analysis of their current condition to allow you to decide when to proceed.
Contact Moss Roofing today to learn more about our residential window replacement services, schedule an in-person appointment, or receive a free estimate.