6 Signs You Need to Seal Your Windows

Sealed window with a beautiful Flower Outside

Have you ever felt a chill sitting by the window or noticed your energy bills creeping up for no apparent reason? These could be signs that your windows need some attention. Sealing your windows helps them keep out the cold more effectively, an important part of maintaining a comfortable and energy-efficient home in Eastern Iowa. Here are the top six signs that it’s time to seal your windows for winter.


The most noticeable sign you need to seal your windows is feeling a draft when you step near them. If you wear slippers and a sweater indoors but still feel a chill near the windows, you know cold air is sneaking in. Sealing these gaps helps insulate the windows for winter, ensuring your home stays cozy.

Inconsistent Indoor Temperatures

Are some rooms colder or warmer than others? This inconsistency may be due to poorly sealed windows. Learning how to seal a window with weatherstripping and caulk helps stabilize indoor temperatures, making every room feel more comfortable.

Unusually High Energy Costs

You expect your energy bills to rise when the temperature drops outside, but a significant spike is a red flag. When windows are not sealed properly, your furnace must work overtime to maintain a comfortable indoor environment. Sealing your windows is a cost-effective way to reduce energy use and save on monthly bills.

Window Frame Wear

Inspect your window frames for signs of old age, such as cracking, chipping, warping, or rotting. These signs indicate the need for window seal replacement. Window frames are integral to your home’s overall insulation, so keeping them in good condition helps boost energy efficiency.

Difficult-to-Operate Windows

If your windows resist opening or closing, they may have warped and become misaligned. This probably means the seal has failed as well. Addressing this issue improves window functionality and contributes to better insulation for a cozier home all winter.

Foggy Windows

Condensation on a window pane can mean various things. If the moisture is on the interior side of the glass, this indicates that the indoor humidity level is too high. Make adjustments to bring the relative humidity down.

The real issue arises when moisture gets stuck between the layers of a double-pane window, indicating that the window seal has failed. Repairing a broken window seal is impossible, so you’ll need to replace your windows to restore visibility and efficiency.

Choose Window Depot of Eastern Iowa

The importance of well-insulated, properly functioning windows can’t be overstated. If your windows are past their prime, sealing may not be enough to optimize efficiency. That’s where Window Depot of Eastern Iowa comes in.

Choose us to replace your windows, and you’ll work with a locally owned and operated business backed by years of experience and a commitment to excellence. Our team is passionate about providing quality window installations, offering the lowest prices on the most energy-efficient windows for unbeatable value. If you’re tired of your old, leaky windows, don’t wait. Contact us at (319) 294-7000 to request a free installation estimate in your Eastern Iowa home.